Everyday nutrition

How Many Calories Do Sit-Ups Burn? A Worked Estimate With Clear Limits

Published October 22, 2026 · BiteCal editorial · Updated October 28, 2026

Sit-up calories cannot be reliably calculated from repetitions alone. For an illustrative 70 kg person, ten minutes in a 3.8-MET moderate-calisthenics category gives about 47 total kcal or 34 above-rest kcal. It is a timed category estimate, not a fixed calorie value for each sit-up or a guarantee of belly-fat loss.

Activity calorie estimator

Try the example, then change the assumptions to explore your own estimate.

Illustrative example result

Total energy estimate: 46.6 kcal
Above-rest estimate: 34.3 kcal

MET model estimate, not measured personal expenditure. Total includes resting energy; above-rest subtracts it. Choose a MET value matching the actual activity.

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Sit-up category example: 70 kg at 3.8 MET

Assumed activity time	Total kcal estimate	Above-rest kcal estimate
3 minutes	14	10
5 minutes	23	17
10 minutes	47	34

Start with time and the actual session

A short abdominal set with breaks is not the same as continuous activity for the full session. Record how long the movement lasted and how much recovery occurred. Speed, range of motion, body mass and effort are missing from a simple repetition count.

Avoid scaling an online value for 100 repetitions to a much larger number while leaving the assumptions unstated. The calorie estimate becomes less meaningful when the described activity no longer matches the session.

A transparent sit-up calculation

The moderate-calisthenics category used here includes sit-ups and is listed at 3.8 MET in the Adult Compendium. At 70 kg, kcal per minute is approximately 3.8 × 3.5 × 70 ÷ 200 = 4.655. The table varies time only to show the arithmetic.

Subtracting one resting MET estimates energy above standardized rest. Neither calculation measures a particular person or proves that one abdominal routine has a particular weight-loss effect.

Do not confuse abdominal exercise with a fat-loss promise

A calorie calculation does not tell you where body fat will change. Choose exercise according to appropriate training goals and technique, rather than treating a sore abdomen or a large repetition count as evidence of targeted fat loss.

Make meal review more convenient

Start with a photo in BiteCal, review the foods and portions, then save your meal. The daily overview and friendly white bear make returning to your diary feel simpler and more enjoyable.

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The BiteCal diary can help you review foods and portions; it does not test abdominal exercise expenditure.