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All Calculators

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Every free calculator on Body Calculator, listed alphabetically. Find what you need in seconds.

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40 Yard Dash Calculator

Use this 40 yard dash calculator to turn your time into speed in mph, convert hand times to electronic, and compare with NFL Combine averages.

5/3/1 Calculator

Use this 5/3/1 calculator to plan a full 4-week cycle of Jim Wendler's 5/3/1 program for your squat, bench press, deadlift and overhead press.

6 Minute Walk Test Calculator

Use this 6 minute walk test calculator to compare your walk distance with the predicted normal for a healthy adult of your sex, age, height and weight.

ABSI Calculator

Use this ABSI calculator to find your A Body Shape Index, a waist measure adjusted for your height and weight that is linked to mortality risk.

Adjusted Body Weight Calculator

Use this adjusted body weight calculator to estimate a clinical reference weight used for dosing above ideal weight.

Age Grade Calculator

Use this age grade calculator to score your race time for your age and sex, with an age-graded percentage and time from the 2025 road running tables.

Air Force PT Test Calculator

Use this Air Force PT test calculator to score your run, push-ups, core and waist on the official charts and see your PFRA composite and category.

Alcohol Calorie Calculator

Use this alcohol calorie calculator to find how many calories are in your drinks, from both alcohol and residual sugar.

Amoxicillin Pediatric Dosage Calculator

Use this Amoxicillin Pediatric Dosage Calculator to turn your child's prescribed dose in mg into mL for the bottle strength on the pharmacy label.

Anion Gap Calculator

Use this anion gap calculator to find your serum anion gap from basic metabolic panel values, a screening step for metabolic acidosis.

Army Body Fat Calculator

Use this Army body fat calculator to check the 2026 waist-to-height standard (under 0.55) and see your former one-site tape test estimate.

Army Fitness Test (AFT) Calculator

Use this Army Fitness Test calculator to turn your five event results into points, a total score, and a pass or fail result for your standard.

AST ALT Ratio Calculator

Use this AST ALT ratio calculator to divide your AST by your ALT, get your De Ritis ratio, and see what the pattern can and cannot tell you.

Baby Eye Color Calculator

Use this Baby Eye Color Calculator to estimate your baby's chance of brown, green or hazel, or blue eyes from parent and grandparent eye colors.

Baby Formula Calculator

Use this baby formula calculator to estimate how much formula your baby may need per day and per feeding, based on weight and age.

Baby Weight Percentile Calculator

Use this baby weight percentile calculator to see where your baby's weight sits on the WHO growth charts, by exact age in days, from birth to age 2.

Badminton Calories Burned Calculator

Use this badminton calories burned calculator to estimate the energy you use on court from your weight, playing time, and level of play.

Barbell Plate Calculator

Use this barbell plate calculator to find the plates to load on each side of the bar for your target weight, in lb or kg.

Baseball Calories Burned Calculator

Use this baseball calories burned calculator to estimate the calories you burn in a game, at practice, or playing catch, based on your weight and time.

Basketball Calories Burned Calculator

Use this basketball calories burned calculator to estimate the calories you burn shooting around, at practice, in pickup games, or in a full game.

BBT Calculator

Use this BBT calculator to read your basal body temperature chart, find your thermal shift and coverline, and see your likely ovulation day.

Beighton Score Calculator

Use this Beighton score calculator to add up your 9-point hypermobility score and compare it with the cutoff for your age group.

Bench Press Calories Burned Calculator

Use this bench press calories burned calculator to estimate the calories you burn benching from your weight, sets, reps, rep speed and rest.

Bench Press Max Calculator

Use this bench press max calculator to estimate your one-rep max from the weight you lifted and reps completed.

Bench Press Pyramid Calculator

Use this bench press pyramid calculator to plan ascending, descending or full pyramid sets from your 1RM, with warm-ups and loads you can put on the bar.

Bike Size Calculator

Use this bike size calculator to find your road, gravel, mountain, hybrid or kids bike size from your inseam or your height.

Biological Age Calculator

Use this biological age calculator to estimate a lifestyle-risk wellness age from your smoking, activity, sleep, and diet habits.

Birth Weight Percentile Calculator

Use this Birth Weight Percentile Calculator to see how your baby's birth weight compares with babies born at the same week, and whether it is SGA, AGA or LGA.

Bishop Score Calculator

Use this Bishop score calculator to add up the findings from your cervical exam and see what your total means for labor induction.

Blood Alcohol Content (BAC) Calculator

Use this blood alcohol content calculator to estimate your approximate BAC from drinks consumed, body weight, and time elapsed.

Blood Pressure Category Calculator

Use this blood pressure category calculator to see which category your systolic and diastolic readings fall into under US or European guidelines.

Blood Type Calculator

Use this blood type calculator to see the possible ABO and Rh blood types a child could inherit from two parents.

BMI Calculator

Use this BMI calculator to calculate your body mass index and see where your weight falls on the standard BMI scale.

BMR Calculator

Use this BMR calculator to calculate your basal metabolic rate, the calories your body burns at complete rest.

Body Fat Calculator

Use this body fat calculator to estimate your body fat percentage from tape measurements using the U.S. Navy method.

Body Frame Size Calculator

Use this body frame size calculator to find whether you have a small, medium, or large frame from your wrist circumference and height.

Body Recomposition Calculator

Use this body recomposition calculator to find calorie and protein targets for losing fat while building muscle.

Body Roundness Index (BRI) Calculator

Use this body roundness index calculator to estimate your body shape from waist circumference and height.

Body Surface Area Calculator

Use this body surface area calculator to calculate your BSA from your height and weight using the Mosteller formula.

Body Type Calculator

Use this body type calculator to find your body shape (hourglass, spoon, pear, rectangle and more) from your bust, waist, high hip and hip measurements.

Bowling Calories Burned Calculator

Use this bowling calories burned calculator to estimate the calories you burn at the bowling alley, on league night, or playing lawn bowls or bocce.

Boxing Calories Burned Calculator

Use this boxing calories burned calculator to estimate the calories you burn on the heavy bag, sparring, in a boxing class or in the ring.

Bra Size Calculator

Use this bra size calculator to turn your underbust and bust measurements into a band and cup size in US, UK, EU, FR/BE and AU/NZ sizing.

Breast Cancer Risk Calculator

Use this breast cancer risk calculator to estimate your 5-year and lifetime chance of invasive breast cancer with the NCI Gail model.

Breast Milk Calculator

Use this breast milk calculator to estimate how much pumped milk your baby may need per bottle, per day and while you are away.

Breast Pump Flange Size Calculator

Use this breast pump flange size calculator to turn your nipple diameter in mm into a flange size range and a good size to try first.

Breastfeeding Calorie Calculator

Use this breastfeeding calorie calculator to estimate your daily calorie needs based on your baseline and feeding stage.

Bruce Protocol METs Calculator

Use this Bruce protocol METs calculator to estimate your peak METs and VO2 max from the total time you lasted on a Bruce treadmill test.

BUN Creatinine Ratio Calculator

Use this BUN creatinine ratio calculator to divide your BUN by your creatinine, in US or SI units, and see what the ratio can and cannot tell you.

Burpees Calories Burned Calculator

Use this burpees calories burned calculator to estimate the calories you burn doing burpees, by number of reps or by time, at your own pace and style.

Caffeine Calculator

Use this caffeine calculator to track your daily caffeine intake against safety limits and estimate how much remains in your system at bedtime.

Calcium Intake Calculator

Use this calcium intake calculator to find your daily calcium target by age and sex, then estimate how much calcium you get from food and supplements.

Calorie Calculator

Use this calorie calculator to find your daily calorie target for losing, maintaining, or gaining weight.

Calorie Deficit Calculator

Use this calorie deficit calculator to find how many calories to eat each day for your weekly weight-loss goal.

Calorie Density Calculator

Use this calorie density calculator to find how many calories are in each gram of a food or meal and see its density band.

Calories Burned Biking Calculator

Use this calories burned biking calculator to estimate how many calories you burn on a bike ride from your weight, ride time, and speed or effort.

Calories Burned by Heart Rate Calculator

Use this calories burned by heart rate calculator to estimate the calories you burned in a workout from your average heart rate, age, weight and sex.

Calories Burned Calculator

Use this calories burned calculator to estimate how many calories you burn during an activity based on your weight and duration.

Calories Burned During Sex Calculator

Use this calories burned during sex calculator to estimate the energy an adult uses during sexual activity from body weight, active time, and effort level.

Calories Burned Hiking Calculator

Use this calories burned hiking calculator to estimate your energy use from your weight, time on the trail, terrain, and pack.

Calories Burned Jumping Rope Calculator

Use this jumping rope calculator to estimate the calories you burn from your weight, active minutes and pace.

Calories Burned Running Calculator

Use this calories burned running calculator to estimate calories burned in a run from your weight, distance, and time or pace.

Calories Burned Sleeping Calculator

Use this calories burned sleeping calculator to estimate how much energy your body uses overnight from your sex, age, height, weight, and hours asleep.

Calories Burned Standing Calculator

Use this calories burned standing calculator to estimate the calories you burn standing still, at a standing desk, or doing light standing work.

Calories Burned Swimming Calculator

Use this calories burned swimming calculator to estimate calories burned for your stroke, effort level, weight and time in the water.

Calories Burned Walking Calculator

Use this walking calorie calculator to estimate calories burned from your weight, speed, time, and incline, plus calories per mile and per km.

Calories Burned Weight Lifting Calculator

Use this calories burned weight lifting calculator to estimate the calories you burn in a lifting session from your weight, time and effort.

Calories to kJ Converter

Use this calories to kJ converter to turn food Calories (kcal), such as a daily target or a recipe serving, into kilojoules.

Cancer Risk Calculator

Use this cancer risk calculator to check your lifestyle risk factors for cancer one by one and see which cancer screenings fit your age.

Carb Loading Calculator

Use this carb loading calculator to find how many grams of carbs to eat each day before a long race, plus race-morning and during-race targets.

Carbohydrate Calculator

Use this carbohydrate calculator to find your daily carb target based on your body, activity level, and calorie needs.

Cardiac Output Calculator

Use this cardiac output calculator to find your cardiac output and cardiac index from heart rate and stroke volume.

Chances of Having Twins Calculator

Use this chances of having twins calculator to estimate your odds of twins from your age, family history and any fertility treatment.

Child Growth Percentile Calculator

Use this child growth percentile calculator to find your child's height-for-age and weight-for-age percentiles.

Child Height Predictor

Use this child height predictor to estimate how tall your child will be as an adult, from parents' heights and your child's current height.

Cholesterol Calculator

Use this cholesterol calculator to find your LDL cholesterol and total-to-HDL ratio from a standard lipid panel.

Clomid Ovulation Calculator

Use this Clomid Ovulation Calculator to estimate when you may ovulate on Clomid, the best days for LH tests and sex, and when to take a pregnancy test.

Conception Calculator

Use this conception calculator to estimate when conception most likely happened from your due date, last period, or an ultrasound scan.

Contact Lens Conversion Calculator

Use this contact lens conversion calculator to estimate the contact lens power that matches your glasses prescription, adjusted for vertex distance.

Contraction Calculator

Use this contraction calculator to time your contractions, see how long and how far apart they are, and check your last hour against the 5-1-1 rule.

Corrected Calcium Calculator

Use this corrected calcium calculator to adjust your measured calcium for low albumin, which skews true calcium status low.

Creatine Dosage Calculator

Use this creatine dosage calculator to calculate your loading and daily maintenance dose based on your body weight.

Creatinine Clearance Calculator (Cockcroft-Gault)

Use this creatinine clearance calculator to estimate your kidney function using the Cockcroft-Gault equation.

Critical Swim Speed Calculator

Use this critical swim speed calculator to turn your 400 and 200 time trials into a CSS pace per 100 m or 100 yd for threshold training.

CrossFit Calories Burned Calculator

Use this CrossFit calories burned calculator to estimate the calories you burn in a CrossFit-style class, WOD, metcon or strength session.

Crown Rump Length Calculator

Use this crown rump length calculator to turn an early ultrasound CRL measurement into gestational age in weeks and days and an estimated due date.

Dancing Calories Burned Calculator

Use this dancing calories burned calculator to estimate the calories you burn in ballet, ballroom, salsa, hip hop, line dancing and more.

Deadlift Calories Burned Calculator

Use this deadlift calories burned calculator to estimate the calories you burn deadlifting from your weight, sets, reps, rep speed, effort and rest time.

Deadlift Max Calculator

Use this deadlift max calculator to estimate your one-rep max from a recent set and benchmark your current strength.

Diabetes Risk Calculator

Use this diabetes risk calculator to score your risk of prediabetes or type 2 diabetes with the 7-question ADA and CDC risk test.

DOTS Score Calculator

Use this DOTS score calculator to turn your squat, bench press and deadlift total into a bodyweight adjusted powerlifting score.

Draw Length Calculator

Use this draw length calculator to estimate your archery draw length from your arm span or height, in inches and cm, for compound and recurve bows.

DRI Calculator

Use this DRI calculator to look up your Dietary Reference Intakes for vitamins, minerals, water, fiber and macros by age, sex, pregnancy and breastfeeding.

Drug Half-Life Calculator

Use this drug half-life calculator to see how much of a medicine is left after a set time and how long it takes to fall to a chosen level.

Due Date Calculator

Use this due date calculator to estimate your pregnancy due date from your last period, conception date, or ultrasound.

Dunk Calculator

Use this dunk calculator to see if your standing reach and vertical jump get you above a 10 ft rim, and how many inches short or over you are.

eAG/A1C Calculator

Use this A1C calculator to convert between A1C and estimated average glucose (eAG) in either direction.

Egg Freezing Calculator

Use this Egg Freezing Calculator to estimate your chance of a live birth from your frozen eggs, or how many eggs you may need for a target chance.

Elliptical Calories Burned Calculator

Use this elliptical calories burned calculator to estimate the calories you burn on an elliptical trainer from your weight, time and effort.

Fat Intake Calculator

Use this fat intake calculator to find your daily fat range in grams plus a separate saturated fat limit.

Fertility by Age Calculator

Use this Fertility by Age Calculator to estimate your chance of getting pregnant each cycle, and within 6 and 12 months, at your age.

Fetal Weight Percentile Calculator

Use this fetal weight percentile calculator to see where your baby's ultrasound weight estimate falls compared with other babies at the same week.

FFMI Calculator

Use this FFMI calculator to calculate your fat-free mass index, a height-adjusted measure of muscularity.

FIB-4 Calculator

Use this FIB-4 calculator to turn your age, AST, ALT and platelet count into a FIB-4 score and see what your liver fibrosis risk band means.

Fiber Calculator

Use this fiber calculator to find your daily fiber target based on your age, sex, and calorie intake.

Fish Oil Calculator

Use this fish oil calculator to turn the EPA and DHA on your supplement label into omega-3 per capsule and per day, and capsules needed for a target.

Football Calories Burned Calculator

Use this football calories burned calculator to estimate the calories you burn playing American football, from tackle games to flag football and catch.

Free Testosterone Calculator

Use this free testosterone calculator to estimate your free and bioavailable testosterone from total testosterone, SHBG, and albumin.

FTP Calculator

Use this FTP calculator to estimate your functional threshold power from a 20-minute, 8-minute or ramp test and get your seven cycling power zones.

Fundal Height Calculator

Use this fundal height calculator to check whether your fundal height in cm is within the expected range for your week of pregnancy.

GFR Calculator

Use this GFR calculator to estimate your kidney function from creatinine, age, and sex using the current CKD-EPI equation.

GLP-1 Protein Calculator

Use this GLP-1 protein calculator to find a daily protein range and per-meal amount that can help protect muscle while a GLP-1 medicine cuts your appetite.

GLP-1 Weight Loss Calculator

Use this GLP-1 weight loss calculator to see what the average result in the main clinical trials would mean for your starting weight.

Glycemic Load Calculator

Use this glycemic load calculator to estimate a food's real blood sugar impact from its carbs and glycemic index.

Golf Calories Burned Calculator

Use this golf calories burned calculator to estimate the calories you burn walking or riding 9 or 18 holes, at the driving range, or playing mini golf.

Grams to Lbs Converter

Use this grams to lbs converter to turn grams into pounds, ounces, or pounds and ounces for food, supplements and baby weights.

Grip Strength Calculator

Use this grip strength calculator to compare your hand grip with people your age and sex and check it against low-strength cutoffs.

Hair Growth Calculator

Use this hair growth calculator to see how long your hair will take to reach a target length, with or without regular trims.

Harvard Step Test Calculator

Use this Harvard step test calculator to turn your stepping time and recovery pulse counts into a Physical Fitness Index score and rating.

Hat Size Calculator

Use this hat size calculator to turn your head measurement in cm or inches into US, UK, EU and letter hat sizes.

HCG Calculator

Use this hCG calculator to check whether the rise between two hCG test results meets the minimum seen in early viable pregnancies.

Head Circumference Percentile Calculator

Use this head circumference percentile calculator to see where your child's head size sits on the WHO growth charts, by exact age, from birth to age 5.

Heart Age Calculator

Use this heart age calculator to compare the age of your heart and blood vessels with your real age, using the Framingham equations with cholesterol or BMI.

Heart Disease Risk Calculator

Use this heart disease risk calculator to estimate your 10-year and 30-year risk of heart attack, stroke and heart failure with the AHA PREVENT equations.

Heart Rate Recovery Calculator

Use this heart rate recovery calculator to see how fast your heart rate drops 1 and 2 minutes after exercise, and how it compares with study cutoffs.

Heart Rate Reserve Calculator

Use this heart rate reserve calculator to find your HRR and your Karvonen target heart rates from your age and resting heart rate.

Heart Rate Zone Calculator

Use this heart rate zone calculator to turn your age or max heart rate into training zones in bpm, with 5-zone, 3-zone and Friel LTHR models.

Height Converter

Use this height converter to switch between feet and inches, inches, centimeters, meters and millimeters in one step.

Height Percentile Calculator

Use this height percentile calculator to see how your height compares with US adults of your age and sex, using measured CDC survey data.

HIIT Calories Burned Calculator

Use this HIIT calories burned calculator to estimate the calories you burn in an interval workout, from Tabata and burpee circuits to bike sprints.

Hockey Calories Burned Calculator

Use this hockey calories burned calculator to estimate the calories you burn playing ice hockey or field hockey, from your weight and time played.

HOMA-IR Calculator

Use this HOMA-IR calculator to turn your fasting glucose and fasting insulin into a HOMA-IR score and see where it sits among published research values.

Horse Riding Calories Burned Calculator

Use this horse riding calories burned calculator to estimate the calories you burn riding at a walk, trot, canter or over jumps, and doing barn chores.

Human Punch Force Calculator

Use this human punch force calculator to estimate how hard you punch from your body weight, punch type, and either your hand speed or experience level.

Hyrox Calculator

Use this Hyrox calculator to predict your finish time from your run pace and station times, or to plan the splits you need for a target time.

Ibuprofen Dosage Calculator

Use this ibuprofen dosage calculator to look up the Drug Facts label dose of Advil or Motrin by your child's weight and age, or the adult dose.

Ice Skating Calories Burned Calculator

Use this ice skating calories burned calculator to estimate the calories you burn at a public skate, doing fast laps, speed skating, or ice dancing.

Ideal Weight Calculator

Use this ideal weight calculator to estimate your ideal body weight from your height and sex using a clinical formula.

Implantation Calculator

Use this implantation calculator to estimate your likely implantation window based on your ovulation date.

Infant Tylenol Dosage Calculator

Use this Infant Tylenol Dosage Calculator to look up the mL of Infants' acetaminophen 160 mg per 5 mL listed for your baby's weight and age.

Intermittent Fasting Calculator

Use this intermittent fasting calculator to choose a fasting schedule and see your eating and fasting windows across the day.

Iron Intake Calculator

Use this iron intake calculator to find your daily iron target by age, sex and life stage, then add up how much iron you get from food.

IVF Due Date Calculator

Use this IVF due date calculator to find your due date from your embryo transfer date and embryo age, for fresh or frozen (FET) transfers.

Jet Lag Recovery Calculator

Use this jet lag recovery calculator to estimate how many days your body clock needs to adjust, and when to seek or avoid light.

Jiu Jitsu Calories Burned Calculator

Use this jiu jitsu calories burned calculator to estimate the calories you burn in a BJJ class, a drilling session or live rolling rounds.

Judo Calories Burned Calculator

Use this judo calories burned calculator to estimate the calories you burn in randori, uchikomi drills, matches or a full judo class.

Jumping Jacks Calories Burned Calculator

Use this jumping jacks calories burned calculator to estimate the calories you burn doing jumping jacks, by minutes or by the number of jacks you do.

Karate Calories Burned Calculator

Use this karate calories burned calculator to estimate the calories you burn in a karate class or training session from your weight, time and pace.

Kayaking Calories Burned Calculator

Use this kayaking calories burned calculator to estimate the calories you burn paddling, from easy flat-water trips to whitewater and racing.

Keto Calculator

Use this keto calculator to find your daily calorie, fat, protein, and carb targets for a low-carbohydrate ketogenic diet.

Kg to Lbs Converter

Use this kg to lbs converter to turn kilograms into pounds, or into pounds and ounces, using the exact 0.45359237 factor.

Kg to Stone Converter

Use this kg to stone converter to turn a weight in kilograms into stone and pounds, decimal stone and total pounds.

Kickboxing Calories Burned Calculator

Use this kickboxing calories burned calculator to estimate the calories you burn in a cardio kickboxing class, gym training, sparring or a fight.

Kids BMI Calculator

Use this kids BMI calculator to find your childโ€™s BMI-for-age percentile and category, including severe obesity, from the CDC growth charts (ages 2 to 19).

kJ to Calories Converter

Use this kJ to calories converter to turn the kilojoules on a food label or cycling app into food Calories (kcal), using 1 kcal = 4.184 kJ.

Lactate Threshold Calculator

Use this lactate threshold calculator to estimate your lactate threshold heart rate and pace from a 30-minute solo test or a recent race.

Lbs to Kg Converter

Use this lbs to kg converter to change pounds, or pounds and ounces, into kilograms for medical forms, sport and travel.

Lbs to Stone Converter

Use this lbs to stone converter to change pounds into stone and pounds, decimal stone and kilograms in one step.

Lean Body Mass Calculator

Use this lean body mass calculator to estimate your LBM, the weight of your body excluding fat mass.

Leg Press to Squat Calculator

Use this leg press to squat calculator to estimate your back squat one rep max from a leg press set, shown with a realistic range.

Life Expectancy Calculator

Use this life expectancy calculator to estimate your remaining life expectancy using Social Security actuarial data.

Lung Cancer Risk Calculator

Use this lung cancer risk calculator to estimate your chance of a lung cancer diagnosis in the next 6 years if you smoke now or used to smoke.

Luteal Phase Calculator

Use this luteal phase calculator to measure the days from ovulation to your next period and see how your luteal phase compares with typical ranges.

Macro Calculator

Use this macro calculator to set your daily protein, carb, and fat targets from your body weight, calorie goal, and activity level.

Mcg to Mg Converter

Use this mcg to mg converter to turn the micrograms on a vitamin or supplement label into milligrams in one step.

Mean Arterial Pressure (MAP) Calculator

Use this mean arterial pressure calculator to find your average blood pressure across a full heartbeat cycle from systolic and diastolic readings.

Melatonin Dosage Calculator

Use this melatonin dosage calculator to see the amounts and timing studied for your sleep goal, and how many gummies or tablets match them.

Menopause Age Calculator

Use this menopause age calculator to estimate the age range when natural menopause is most likely for you, based on data from over 50,000 women.

Metabolic Age Calculator

Use this metabolic age calculator to compare your BMR to typical values for other ages, the same metric used on smart scales.

Mg to IU Converter

Use this mg to IU converter to turn milligrams or micrograms of vitamin D, E or A into international units (IU), using the right factor for each form.

Mg to Mcg Converter

Use this mg to mcg converter to turn the milligrams on a supplement or food label into micrograms you can compare with other figures.

Mg to mL Converter

Use this mg to mL converter to find how many milliliters hold a given number of milligrams, using the strength printed on your label.

Miles to Steps Calculator

Use this miles to steps calculator to turn any distance in miles or kilometers into a step count, based on your own stride.

Miscarriage Risk Calculator

Use this Miscarriage Risk Calculator to see the chance your pregnancy continues, week by week, based on your age, history and heartbeat scan.

Ml to Oz Converter

Use this mL to oz converter to turn milliliters into US, UK or FDA label fluid ounces in one step.

MMA Calories Burned Calculator

Use this MMA calories burned calculator to estimate the calories you burn in MMA classes, sparring, grappling, conditioning or a fight.

mmol/L to mg/dL Converter

Use this mmol/L to mg/dL converter to change glucose, cholesterol, triglyceride and creatinine results from one unit to the other.

Muay Thai Calories Burned Calculator

Use this Muay Thai calories burned calculator to estimate the calories you burn in a class, pad session or sparring day from your weight and time.

Muscle Gain Potential Calculator

Use this muscle gain potential calculator to estimate your remaining natural muscle-building headroom from your current FFMI and frame size.

Navy PRT Calculator

Use this Navy PRT calculator to check your push-up, forearm plank and cardio results against the current Navy Physical Readiness Test standards.

Net Carbs Calculator

Use this net carbs calculator to find your net carbs from a food label's total carbohydrate, fiber, and sugar alcohol values.

One Rep Max Calculator

Use this one-rep max calculator to estimate your 1RM from the weight you lifted and number of reps completed.

Osteoporosis Risk Calculator

Use this osteoporosis risk calculator to estimate your chance of low bone density from your age and weight, using the validated OST score.

Ounces to Kg Converter

Use this ounces to kg converter to turn ounces, or pounds and ounces, into kilograms and grams for baby, postal and food weights.

Ovarian Cancer Risk Calculator

Use this ovarian cancer risk calculator to check your family history for inherited risk and, from age 50, estimate your 10 year risk.

Ovulation Calculator

Use this ovulation calculator to estimate your ovulation date, fertile window, and next period from your last period and cycle length.

Oz to Ml Converter

Use this oz to ml converter to change US, UK or food-label fluid ounces into milliliters, with a quick table for kitchen and travel.

Pack Years Calculator

Use this pack years calculator to find your smoking pack-year total and check it against lung cancer screening guidelines.

Paddle Boarding Calories Burned Calculator

Use this paddle boarding calories burned calculator to estimate the calories you burn stand-up paddle boarding, based on your weight, paddling pace, and time on the water.

Padel Calories Burned Calculator

Use this padel calories burned calculator to estimate the energy you use on court, based on your weight, how long you play and how hard you play.

Pant Size Calculator

Use this pant size calculator to find your men's waist and inseam size or your women's US pant size from body measurements, with UK and EU sizes.

Peak Flow Calculator

Use this peak flow calculator to find your predicted peak flow from your sex, age and height, and see your asthma zones from your personal best.

Peptide Calculator

Use this Peptide Calculator to double-check how much to draw for a prescribed dose after mixing a vial, in mL and in units on a U-100 syringe.

Period Calculator

Use this period calculator to predict your next period dates from your last period and average cycle length.

Pickleball Calories Burned Calculator

Use this pickleball calories burned calculator to estimate the calories you burn playing doubles or singles, based on your weight, age group, and time on court.

Pilates Calories Burned Calculator

Use this Pilates calories burned calculator to estimate the calories you burn in a mat, reformer or studio Pilates class from your weight and time.

Plank Calories Burned Calculator

Use this plank calories burned calculator to estimate the calories you burn holding a plank, from your body weight, hold time and number of sets.

Ponderal Index Calculator

Use this ponderal index calculator to find an adult's ponderal index in kg/mยณ or a newborn's Rohrer's index, with gestational age context for babies.

Postpartum Weight Loss Calculator

Use this postpartum weight loss calculator to see how much weight you carry compared with before pregnancy and a gentle pace to get back.

Pounds to Calories Converter

Use this pounds to calories converter to turn pounds or kilograms of body weight change into calories, and see the daily gap over any number of weeks.

Power to Weight Calculator

Use this power to weight calculator to turn your cycling power and body weight into watts per kg, with an optional bike weight and an FTP rating.

Powerlifting Calculator

Use this powerlifting calculator to total your squat, bench and deadlift and score it with IPF GL Points, plus DOTS and Wilks 2020 for comparison.

Pregnancy Calorie Calculator

Use this pregnancy calorie calculator to estimate your daily calorie needs based on your trimester and pre-pregnancy needs.

Pregnancy Macro Calculator

Use this pregnancy macro calculator to calculate protein, carb, and fat targets based on your calorie needs and pregnancy stage.

Pregnancy Test Calculator

Use this pregnancy test calculator to find when to take a pregnancy test for the most reliable result, and the earliest day a home test might work.

Pregnancy Weight Gain Calculator

Use this pregnancy weight gain calculator to estimate recommended weight gain from your pre-pregnancy BMI and current week.

Prescription Refill Calculator

Use this prescription refill calculator to find when your medicine runs out, the earliest date your plan may allow a refill, and when to set a reminder.

Prostate Cancer Risk Calculator

Use this prostate cancer risk calculator to estimate your chance of no cancer, low-grade or high-grade cancer on a biopsy, from your PSA and risk factors.

Protein Calculator

Use this protein calculator to find how much protein to eat each day based on your weight, age, and training goal.

Pulse Pressure Calculator

Use this pulse pressure calculator to find the gap between your systolic and diastolic blood pressure readings.

Push-Ups Calorie Calculator

Use this Push-Ups Calorie Calculator to estimate the calories you burn from push-ups, in total and for each single push-up.

Race Time Predictor Calculator

Use this race time predictor calculator to estimate your finish time at any distance from a recent race result, with pace per mile and per km.

Racquetball Calories Burned Calculator

Use this racquetball calories burned calculator to estimate the calories you burn on the court, based on your weight, how long you play and your level of play.

Raw to Cooked Weight Conversion Calculator

Use this raw to cooked weight conversion calculator to convert meat, fish, rice, pasta and oats between raw and cooked weight and get calories per cooked gram.

Reading Glasses Calculator

Use this reading glasses calculator to estimate the over-the-counter reader strength you may need, based on your age and reading distance.

Recipe Calorie Calculator

Use this recipe calorie calculator to add up the calories, protein, fat and carbs in a recipe and see them per serving and per 100 g.

Relative Fat Mass (RFM) Calculator

Use this Relative Fat Mass (RFM) calculator to estimate your body fat percentage from your height and waist, and compare it with the obesity cut-offs.

Reverse BMI Calculator

Use this reverse BMI calculator to find the weight needed to reach a specific target BMI at your height.

Ring Size Converter

Use this ring size converter to turn a finger measurement or a size in one system into US, UK, EU and Japan ring sizes.

Rock Climbing Calories Burned Calculator

Use this rock climbing calories burned calculator to estimate the calories you burn on routes, bouldering, a treadwall or a day at the crag.

Roller Skating Calories Burned Calculator

Use this roller skating calories burned calculator to estimate the calories you burn at the rink, on quad skates, or in-line skating on trails at your speed.

Rowing Machine Calories Burned Calculator

Use this rowing machine calories burned calculator to estimate the calories you burn on an indoor rower, by effort or by your average watts.

Rowing Pace Calculator

Use this rowing pace calculator to find your 500 m split, watts, calories per hour and finish times from your distance and time on a rowing machine.

RPE Calculator

Use this RPE calculator to estimate your one rep max from the weight, reps and RPE of a set, and find the load for your next set.

Rucking Calorie Calculator

Use this rucking calorie calculator to estimate calories burned walking with a weighted pack, based on your weight, pack, speed, slope, terrain and time.

Rugby Calories Burned Calculator

Use this rugby calories burned calculator to estimate the calories you burn in a rugby match, training session or touch game from your weight and time.

Running Cadence Calculator

Use this running cadence calculator to find your steps per minute from a step count or your pace and step length, and to set a gradual target cadence.

Running Pace Calculator

Use this running pace calculator to calculate your pace, time, or distance and predict your finish time at another race distance.

Sauna Calories Burned Calculator

Use this sauna calories burned calculator to estimate the energy you use in a hot, dry sauna from your body weight and time in the hot room.

Semaglutide Dosage Calculator

Use this Semaglutide Dosage Calculator to turn your prescribed dose in mg into mL and units on a U-100 syringe, using your vial's mg/mL.

Shirt Size Calculator

Use this shirt size calculator to find your dress shirt collar and sleeve size, men's casual size or women's top size, with US, UK and EU conversions.

Shoe Size Converter

Use this shoe size converter to turn your foot length or a shoe size into US, UK, EU, Australia and Japan sizes in one step.

Shoulder to Waist Ratio Calculator

Use this shoulder to waist ratio calculator to divide your shoulder size by your waist size and see how you compare with the 1.618 golden ratio.

Sinclair Calculator

Use this Sinclair calculator to turn your snatch and clean and jerk total into a body weight adjusted Sinclair total for Olympic weightlifting.

Skateboarding Calories Burned Calculator

Use this skateboarding calories burned calculator to estimate the calories you burn cruising, at the skate park, or longboarding at your usual speed.

Skeletal Muscle Mass Calculator

Use this skeletal muscle mass calculator to estimate your total muscle mass from height, weight, age, and sex.

Ski Size Calculator

Use this ski size calculator to find your downhill or cross-country ski length from your height, weight, ability, terrain and age.

Skiing Calories Burned Calculator

Use this skiing calories burned calculator to estimate the calories you burn downhill or cross-country skiing, based on your weight, effort, and time on snow.

Skinfold Body Fat Calculator

Use this skinfold body fat calculator to estimate your body fat percentage from caliper readings, with the Jackson-Pollock or Durnin-Womersley method.

Sleep Calculator

Use this sleep calculator to find bedtimes or wake-up times based on sleep cycles and how long it takes you to fall asleep.

Sleep Debt Calculator

Use this sleep debt calculator to add up how much sleep you missed over the last 7 nights, compared with the sleep you need.

Snowboarding Calories Burned Calculator

Use this snowboarding calories burned calculator to estimate the calories you burn on your board, based on your weight, riding effort and time spent riding.

Soccer Calories Burned Calculator

Use this soccer calories burned calculator to estimate the calories you burn in a casual kickabout, a competitive match, futsal, or walking football.

Sodium Intake Calculator

Use this sodium intake calculator to track your daily sodium against the general limit and the stricter blood pressure target.

Softball Calories Burned Calculator

Use this softball calories burned calculator to estimate the calories you burn playing, pitching, practicing or umpiring a slow pitch or fast pitch game.

Spin Class Calories Burned Calculator

Use this spin class calories burned calculator to estimate the calories you burn in an indoor cycling class, from class type or the watts on your bike.

Sports Calories Burned Calculator

Use this sports calories burned calculator to estimate calories for 44 sports and classes, and to compare up to five sports side by side at your weight.

Squash Calories Burned Calculator

Use this squash calories burned calculator to estimate the calories you burn on court from your weight, playing time and how hard you play.

Squat Max Calculator

Use this squat max calculator to estimate your one-rep max from a recent set and benchmark your current strength.

Squats Calories Burned Calculator

Use this squats calories burned calculator to estimate the calories you burn doing bodyweight, weighted or jump squats, by reps and sets or by time.

Stair Climber Calories Burned Calculator

Use this stair climber calories burned calculator to estimate the calories you burn on a StairMaster, stepmill or real stairs from your weight and time.

Standard Drink Calculator

Use this standard drink calculator to count the standard drinks and grams of pure alcohol in any drink, using US, UK, Canadian, Australian or WHO sizes.

Steps to Calories Calculator

Use this steps to calories calculator to estimate calories burned from your step count using real walking MET values.

Steps to Kilometers Calculator

Use this steps to kilometers calculator to turn your step count into kilometers and miles, based on your own step length.

Steps to Miles Calculator

Use this steps to miles calculator to convert your step count into distance walked or run based on your height.

Stone to Kg Converter

Use this stone to kg converter to change a weight in stone and pounds, such as 11 st 7 lb, into kilograms for NHS forms, apps and travel.

Stone to Lbs Converter

Use this stone to lbs converter to turn a weight like 11 st 7 lb into total pounds and kilograms in one step.

Strength Level Calculator

Use this strength level calculator to see where your one-rep max ranks against others of your body weight and sex.

Stride Length Calculator

Use this stride length calculator to find your step and stride length from a measured walk or your height, in inches, feet, centimeters and meters.

Sugar Intake Calculator

Use this sugar intake calculator to track your daily added sugar against WHO and AHA reference limits.

Surfing Calories Burned Calculator

Use this surfing calories burned calculator to estimate the calories you burn surfing, from your weight, your time in the water, and the type of session.

Sweat Rate Calculator

Use this sweat rate calculator to find how much you sweat per hour from your weight before and after exercise, what you drank and how long you trained.

Swim Pace Calculator

Use this swim pace calculator to find your pace per 100 m and 100 yd, your speed, and your critical swim speed (CSS) from a 400 and 200 test.

Table Tennis Calories Burned Calculator

Use this table tennis calories burned calculator to estimate the energy you use playing ping pong, from your body weight and time at the table.

Taekwondo Calories Burned Calculator

Use this taekwondo calories burned calculator to estimate the calories you burn in class, poomsae practice or sparring from your weight and time.

Target Heart Rate Calculator

Use this target heart rate calculator to find your exercise heart rate zone in beats per minute and your 10-second pulse count.

TDEE Calculator

Use this TDEE calculator to calculate your total daily energy expenditure, or how many calories you burn each day.

Tennis Calories Burned Calculator

Use this tennis calories burned calculator to estimate the calories you burn playing singles, doubles, or hitting practice, from your weight and time on court.

Tirzepatide Dosage Calculator

Use this tirzepatide dosage calculator to turn the dose your prescriber set into the volume to draw from a vial, in mL and in units on a U-100 syringe.

Transferrin Saturation Calculator

Use this transferrin saturation calculator to work out your TSAT from serum iron and TIBC, UIBC or transferrin, in US or SI units.

Treadmill Calorie Calculator

Use this treadmill calorie calculator to estimate calories burned from your weight, treadmill speed, incline and time, walking or running.

Triathlon Nutrition Calculator

Use this triathlon nutrition calculator to plan carbs, fluid, sodium and caffeine per hour for a sprint, Olympic, 70.3 or full distance race.

Triglyceride-to-HDL Ratio Calculator

Use this triglyceride-to-HDL ratio calculator to calculate your TG/HDL-C ratio from your lipid panel results.

Tylenol Dosage Calculator

Use this Tylenol dosage calculator to look up the label dose of acetaminophen for children aged 2 to 11 and adults, by product, age and weight.

USMC PFT/CFT Calculator

Use this USMC PFT/CFT calculator to turn your event results into points, a total score, and a class for the Marine Corps fitness tests.

VBAC Calculator

Use this VBAC calculator to estimate your chance of a vaginal birth after cesarean if you try labor, using the race-free 2021 MFMU model.

Visceral Fat Calculator

Use this visceral fat calculator to estimate your visceral fat risk from your waist and waist-to-height ratio.

Vital Capacity Calculator

Use this vital capacity calculator to find your predicted forced vital capacity (FVC), lower limit of normal and percent predicted from age, sex and height.

Vitamin D mcg to IU Converter

Use this vitamin D mcg to IU converter to change micrograms on a vitamin D label into international units (IU), or IU back into mcg.

VO2 Max Calculator

Use this VO2 max calculator to estimate your aerobic fitness from a one-mile walk test or your basic stats.

Volleyball Calories Burned Calculator

Use this volleyball calories burned calculator to estimate the calories you burn playing casual, competitive indoor, or beach volleyball, from your weight and time.

Waist-to-Height Ratio Calculator

Use this waist-to-height ratio calculator to compare your waist measurement with your height and assess body fat distribution.

Waist-to-Hip Ratio Calculator

Use this waist-to-hip ratio calculator to compare your waist and hip measurements and assess body fat distribution.

Walking Time Calculator

Use this walking time calculator to find how long it will take to walk any distance, plus your arrival time, pace and extra time for hills.

Water Aerobics Calories Burned Calculator

Use this water aerobics calories burned calculator to estimate the calories you burn in a water aerobics class, water walking or aqua jogging.

Water Intake Calculator

Use this water intake calculator to estimate your daily water needs based on sex, activity level, and climate.

Weight Cut Calculator

Use this weight cut calculator to plan how much weight to lose before weigh-in, and how much can come off safely before fight week.

Weight Gain Calculator

Use this weight gain calculator to find how many weeks it may take to reach your goal weight and how many extra calories a day to plan for.

Weight Loss Calculator by Date

Use this weight loss calculator by date to find the weekly loss and daily calories needed to reach your goal weight by a set date.

Weight Loss Percentage Calculator

Use this weight loss percentage calculator to see what percentage of your starting body weight you've lost.

Weighted Blanket Calculator

Use this weighted blanket calculator to find a blanket weight for your body weight, rounded down to a standard size you can buy.

Wrestling Calories Burned Calculator

Use this wrestling calories burned calculator to estimate the energy you use in practice, live wrestling or matches from your weight and time.

Yoga Calories Burned Calculator

Use this yoga calories burned calculator to estimate the calories you burn in a yoga class from your weight, session length and style of yoga.

Zone 2 Heart Rate Calculator

Use this zone 2 heart rate calculator to compare your zone 2 range by % of max heart rate, heart rate reserve, the MAF rule and a lab threshold.

Zumba Calories Burned Calculator

Use this Zumba calories burned calculator to estimate the calories you burn in a Zumba group class or home video workout, based on your weight and time.