Medical Disclaimer: This calculator provides a general estimate based on established research and is for educational purposes only, not a substitute for medical advice. Individual results can vary based on health conditions, so consult a qualified healthcare professional or registered dietitian before making significant changes to your diet, exercise, or health routine. Read our full Medical Disclaimer.
How Calories Burned Kickboxing Are Calculated
Kickboxing calories burned is the energy your body uses during a session of punches, kicks and footwork. It depends mostly on your body weight and how hard the session is. A no-contact fitness class is a very different workout from pad work and sparring at a fight gym, so this tool keeps them apart.
What the Kickboxing Calorie Estimate Measures
The result estimates total energy used during the session, including what your body would use at rest anyway, so it is a gross figure. It does not measure your heart rate, technique, or how many strikes you throw.
The Formula
Calories (kcal) = MET x body weight (kg) x time (hours)
A MET compares an activity with sitting at rest, and 1 MET is about 1 kcal per kg of body weight per hour. All values here come from the 2024 Adult Compendium of Physical Activities, which covers adults aged 19 to 59¹.
How This Calculator Computes Your Result
Enter your weight (lb or kg), age group and session type, then choose how to enter time:
Whole session (default): the time you spent training, in hours and minutes. Short pauses within the session are included.
Rounds: number of rounds and round length. Rest between rounds is not added, so the result is labeled active time only.
Mixed session: up to four parts, such as a warm-up, pad work and conditioning, each with its own session type. Long breaks are left out, so this result is also labeled active time only.
The tool rounds to the nearest 5 kcal and also shows kcal per hour, kcal per 30 minutes, and every session type at your weight. The tool gives no kickboxing result for anyone under 18, because youth values differ. At 60 and over you get the adult result with a note that values for older adults may be lower.
Session type | What it covers | Compendium code | MET |
Cardio kickboxing, easy or beginner pace | Slow, learning-focused class or practice | 15425 | 5.3 |
Cardio kickboxing class | No-contact fitness class (default) | 15457 | 7.3 |
Kickboxing training and sparring | Pads, heavy bag, partner drills, sparring | 15430 | 10.3 |
Competition bout, rounds only | Stand-in value, see below | 15100 | 12.3 |
The Compendium has its own "Kickboxing" row (7.3) and also names kickboxing in a general martial arts row at a moderate pace (10.3)¹. This tool uses the first for a class and the second for fight-gym training. It has no kickboxing fight value, so the competition option uses its in-ring boxing value as a stand-in¹.
What Your Result Means
The calories shown are what that kickboxing session used, not a target. Here is what each session type burns at two body weights:
Session type | 70 kg, 30 min | 70 kg, 60 min | 90 kg, 60 min |
Easy or beginner pace | 185 kcal | 370 kcal | 475 kcal |
Cardio kickboxing class | 255 kcal | 510 kcal | 655 kcal |
Training and sparring | 360 kcal | 720 kcal | 925 kcal |
Competition bout (stand-in) | 430 kcal | 860 kcal | 1105 kcal |
An hour of pad work and sparring burns about 40% more than an hour of class. A heavier person burns more at the same effort, because they move more weight with every kick and step.
What Changes Your Burn in Kickboxing
Kicks cost more than punches. In a study of 11 women in a kickboxing session, the kicking segment used more oxygen than the punching segment (18.9 vs 14.4 mL per kg per minute)³. In the American Council on Exercise (ACE) study, combinations of upper and lower body moves burned the most, at 8.3 kcal per minute, against 6.45 for mostly upper body moves².
Work and rest. Classes stop for teaching, and fight training runs in rounds with breaks. A review found that elite kickboxers in contests work and rest in about a 1 to 1 ratio, while amateur and national level fighters rest 2 to 5 times as long as they work⁵. If your session has long breaks, use Rounds or Mixed session instead of clock time.
Contact and competition. A real bout is close to an all-out effort. In 15 elite fighters across three 2-minute K1 rounds, heart rate reached about 185 beats per minute and blood lactate (a marker of hard anaerobic work) rose from 2.2 to 14.6 mmol/L⁴. Sparring and fights also bring head impacts; a review of the sport describes chronic repetitive head trauma as a feature of kickboxing⁵.
What Studies Measured in Cardio Kickboxing Classes
The ACE study measured 15 women averaging 135 lb, working at 75 to 85% of maximum heart rate, and concluded most people can expect 350 to 450 kcal per hour². This calculator gives 445 kcal for a 135 lb person in a 60 minute class, at the top of that range. A later study measured lower oxygen use in class segments, about 4.1 to 5.4 METs by our conversion, closer to the beginner option³. Both studies were small and included only young women.
That second study also found that, at the same heart rate, kickboxing used 2.3 to 3.2 mL of oxygen per kg per minute less than treadmill exercise³. So a watch that turns heart rate into calories using running data may read high for kickboxing.
Kickboxing vs Boxing, Muay Thai, HIIT and Running
Values for 60 minutes, from the 2024 Compendium¹:
Activity | Code | MET | 70 kg | 90 kg |
Kickboxing class | 15457 | 7.3 | 510 kcal | 655 kcal |
Boxing, sparring | 15120 | 7.8 | 545 kcal | 700 kcal |
Muay Thai (martial arts, moderate pace) | 15430 | 10.3 | 720 kcal | 925 kcal |
HIIT, moderate effort | 02210 | 7.0 | 490 kcal | 630 kcal |
HIIT, vigorous (burpees, Tabata) | 02214 | 11.0 | 770 kcal | 990 kcal |
Running, 6 mph (10 min per mile) | 12050 | 9.3 | 650 kcal | 835 kcal |
A class sits close to moderate HIIT and boxing sparring. Running at 6 mph burns more than a class but less than fight-gym training, and Muay Thai shares the training and sparring value.
A Note on Accuracy
Two people in the same kickboxing class can throw very different numbers of strikes, kick at different heights, and rest for different lengths of time. Skill and fitness may also change the cost of the same combination. The MET values are group averages with a fixed resting rate, and the class studies are small. Expect your real burn to be higher or lower than this estimate.
Frequently Asked Questions
How many calories does an hour of kickboxing burn?
A typical cardio kickboxing class burns about 510 kcal an hour at 70 kg (154 lb) and 655 kcal at 90 kg (198 lb)¹. Pad work and sparring is higher, about 720 kcal at 70 kg.
Is kickboxing good for weight loss?
A class burns about as much per hour as moderate HIIT, so it can add a useful number of calories to a week¹. One session will not decide your weight, which depends on total intake and output.
Does kickboxing burn more calories than running?
A cardio kickboxing class (7.3 MET) burns less per hour than running at 6 mph (9.3 MET), while hard kickboxing training and sparring (10.3 MET) burns more¹.
Are smartwatch calories accurate for kickboxing?
They can be off. In one study, kickboxing used less oxygen than treadmill exercise at the same heart rate, so heart-rate based estimates may read high³.
Sources
2024 Adult Compendium of Physical Activities, Herrmann et al., 2024
ACE Research Team Counts Calories, Confirms Benefits of Cardio Kickboxing, American Council on Exercise, 1999
Differences in VO2 Between Kickboxing and Treadmill Exercise at Similar Heart Rates, Wingfield, 2006
Physiological Responses and Bout Analysis in Elite Kickboxers During International K1 Competitions, Rydzik et al., 2021
Kickboxing Review: Anthropometric, Psychophysiological and Activity Profiles and Injury Epidemiology, Slimani et al., 2017