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 Rock Climbing Are Calculated
Calories burned rock climbing is the energy your body uses while you are on the wall. It depends mostly on your body weight, how long you actually climb, and how hard the climbing is for you.
What the Rock Climbing Calorie Estimate Measures
It estimates the energy cost of your climbing time, from easy top-rope laps to hard boulder problems. It does not count the time you spend belaying a partner, resting or reading the next route. It is an estimate built on group averages.
The Formula
The calculator uses MET values. Each MET is a multiple of your resting energy use, with 1 MET equal to about 1 calorie per kilogram of body weight per hour².
Calories burned = MET x body weight (kg) x time (hours)
Split session: calories = (5.8 x kg x easy route hours) + (7.3 x kg x hard route hours) + (8.8 x kg x bouldering hours)
The climbing values are taken from the 2024 Adult Compendium of Physical Activities. It rates climbing by difficulty and style, not by indoor or outdoor, so a gym route and a rock route of the same difficulty use the same value¹.
How This Calculator Computes Your Result
Enter your age group, weight (pounds or kilograms) and climbing time. Pick one climbing type for the whole session, or split your session into minutes on easy routes, hard routes and boulders. Split mode counts active time only. If you add your total session length, the tool shows what share of it you spent climbing, but that extra time never gets a calorie value.
Rounding is to the nearest 5 calories. Results show the total, calories per hour, calories per 30 minutes, and a table of every climbing type at your weight. These are gross calories, so they include the energy you would burn at rest anyway. Under 18 the tool shows a note and no result. For ages 60 and over it adds a note, because the older adult compendium has no climbing values.
What Your Result Means
Pick the type that matches what you climbed. For a 70 kg (154 lb) climber, each type works out to¹:
Climbing type | Compendium code | MET | 30 minutes | 60 minutes |
Easy to moderate routes | 15537 | 5.8 | 205 kcal | 405 kcal |
Hard routes | 15535 | 7.3 | 255 kcal | 510 kcal |
Bouldering | 15534 | 8.8 | 310 kcal | 615 kcal |
Rock or mountain climbing, general | 15533 | 8.0 | 280 kcal | 560 kcal |
Speed climbing | 15536 | 10.5 | 370 kcal | 735 kcal |
Treadwall (rotating wall), 4 to 10 m per minute | 15538, 15539 | 10.5 | 370 kcal | 735 kcal |
Rappelling (estimated value) | 15540 | 5.0 | 175 kcal | 350 kcal |
"Easy to moderate" means routes well within your ability. "Hard" means routes near your limit, often steep or overhanging, where your forearms pump out or you fall. For example, a 150 lb (68 kg) climber with 40 minutes on easy routes and 20 on hard ones burns about 430 calories, an average of 6.3 METs, even if the gym visit lasted 2 hours.
What Changes Your Burn on the Wall
Time actually climbing. This is the biggest factor. On top rope you usually take turns belaying a partner, and bouldering is short attempts with long rests. In a simulated bouldering competition, heart rate and breathing went back to resting levels within 4 minutes of rest⁵. So count attempts, not the whole visit. If you are unsure, time a few attempts and rests next session.
Steepness and difficulty. In a lab study of 14 experienced climbers, heart rate, oxygen use and energy use differed significantly across a vertical wall, a 106 degree wall and a 151 degree overhang⁴.
Your skill. Experienced climbers move more efficiently. On a vertical wall, beginners used 27.1 mL of oxygen per kg per minute, recreational climbers 25.0 and experienced climbers 22.5⁶. On the same easy route, recreational climbers used about 50% more energy than elite climbers (60.1 vs 40.3 kJ)⁷.
What Studies of Climbing Show
A review of difficult climbing found that oxygen use averages about 20 to 25 mL per kg per minute during an ascent of 2 to 7 minutes, with peaks over 30³. Divided by 3.5 (the resting value), that is about 5.7 to 7.1 METs, close to the compendium's 5.8 and 7.3 for routes.
Bouldering hits higher peaks. In 11 elite boulderers, peak oxygen use was 35.8 mL per kg per minute, about 75% of their treadmill running maximum, and peak heart rate was about 88% of maximum⁵. A session average sits much lower.
Heart rate is a weak guide on the wall. On a treadmill or bike, heart rate and oxygen use rise together in a straight line, but in climbing they do not⁴. That is why this calculator uses METs, not heart rate. Much of the energy also comes from short-burst systems that do not use oxygen: in one study, the aerobic system supplied only about 40 to 46% of the energy on indoor routes⁷.
How Climbing Compares With Hiking, Lifting, Rowing and Running
Calories for 60 minutes of active time, from the 2024 compendium values²:
Activity | MET | 70 kg (154 lb) | 90 kg (198 lb) |
Climbing, easy to moderate routes | 5.8 | 405 kcal | 520 kcal |
Climbing, hard routes | 7.3 | 510 kcal | 655 kcal |
Bouldering | 8.8 | 615 kcal | 790 kcal |
Hiking, normal pace, no load | 5.3 | 370 kcal | 475 kcal |
Weight lifting, vigorous | 6.0 | 420 kcal | 540 kcal |
Rowing machine, vigorous | 7.3 | 510 kcal | 655 kcal |
Running, 6 to 6.3 mph | 9.3 | 650 kcal | 835 kcal |
Minute for minute on the wall, easy routes sit near vigorous lifting and hard routes match a hard row. In the lab, nonstop climbing used about as much energy as running at 8 to 11 minutes per mile⁴. Over a whole session the hourly burn is lower, because so much of it is rest.
A Note on Accuracy
The compendium rates climbing by broad difficulty, and "hard" depends on who is climbing. A route that is easy for you may be hard for a newer climber, who uses more energy on the same moves⁶. Your result also depends on how carefully you count wall time. Use it to compare your own sessions, not as an exact count.
Frequently Asked Questions
How many calories do you burn rock climbing for an hour?
For a 70 kg (154 lb) adult, an hour on the wall is about 405 calories on easy to moderate routes and 510 on hard routes. A 2-hour gym visit with lots of belaying and rest may include well under an hour of climbing.
Does bouldering burn more calories than top rope climbing?
Per minute on the wall, yes: bouldering is 8.8 METs in the compendium, against 5.8 for easy to moderate routes¹. Bouldering sessions have long rests, though, so the total for a visit can be similar.
Is rock climbing a good workout for weight loss?
Nonstop climbing uses about as much energy as moderate-pace running, and researchers rate it a good activity for heart, lung and muscular fitness⁴. Over a week, your food and total activity still decide whether your weight changes.
How accurate is a rock climbing calorie calculator?
It is a ballpark figure. Skill, route steepness and time spent resting change your real burn a lot, and heart rate based estimates work poorly for climbing⁴ ⁶.
Sources
2024 Adult Compendium, Sports, Compendium of Physical Activities
2024 Adult Compendium of Physical Activities, Herrmann et al., 2024
Physiology of Difficult Rock Climbing, Watts, 2004
Energy Expenditure and Physiological Responses During Indoor Rock Climbing, Mermier et al., 1997
Cardiorespiratory Demands of Competitive Rock Climbing, Callender et al., 2021
Effect of Climbing Ability on Energy Expenditure of Easy and Moderately Difficult Routes, Baláš et al., 2012
Energy System Contributions in Indoor Rock Climbing, Bertuzzi et al., 2007