How many calories does one sit-up burn?

A standard sit-up burns approximately 0.15 to 0.35 calories per rep for most people, depending on body weight and pace. Heavier individuals and faster paces yield higher per-rep estimates. These numbers are derived from MET-based formulas.

Why do sit-up variations have different calorie estimates?

Different variations require different levels of effort. V-ups (6.0 MET) engage the full body, while basic crunches (2.8 MET) involve a shorter range of motion. The MET value reflects these intensity differences.

How does the sets-and-reps mode handle rest periods?

Rest periods between sets are calculated at resting MET (1.0), which means your body still expends some energy while recovering. The total estimate combines both the work phase and the rest phase calories.

What pace should I select?

Moderate pace (18 reps/min) represents a typical controlled tempo. Slow (12 rpm) is deliberate with pauses. Fast (24 rpm) and very fast (30 rpm) suit experienced users who maintain form at higher speeds.

Are crunches and sit-ups the same for calorie purposes?

No. Crunches have a shorter range of motion (2.8 MET) compared to full sit-ups (3.8 MET). The reduced movement means less energy expenditure per rep, reflected in the different MET values.

Does adding weight significantly change the calorie estimate?

Weighted sit-ups (5.0 MET) burn about 32% more calories than standard sit-ups (3.8 MET). The higher MET reflects the additional resistance throughout the movement.

Sit-Up Calories Burned Calculator

Name: Sit-Up Calories Burned Calculator
Author: Manish Kumar

Key Takeaways

A standard sit-up burns approximately 0.15-0.35 kcal per rep depending on body weight and pace.^[1]
V-ups (6.0 MET) burn roughly 58% more calories than standard sit-ups (3.8 MET) per rep.^[2]
Rest periods between sets still contribute some calories at resting metabolic rate (1.0 MET).
Basic crunches (2.8 MET) involve a shorter range of motion than full sit-ups, resulting in lower energy demand.^[4]
These are informational estimates for personal journaling. Individual results vary with form and tempo control.

Quick Sit-Up Calorie Charts

Estimated kcal for 50 reps at moderate pace. For informational reference only.

By Variation (50 reps)

Variation	MET	55 kg	70 kg	85 kg	100 kg
Standard Sit-Up	3.8	10	13	16	19
Weighted Sit-Up	5	13	17	21	24
Decline Sit-Up	4.5	12	15	19	22
V-Up / V-Sit	6	16	20	25	29
Bicycle Crunch	3.8	10	13	16	19
Russian Twist	4	11	14	17	19
Medicine Ball Sit-Up	5.5	15	19	23	27
Basic Crunch	2.8	8	10	12	14
Reverse Crunch	3	8	10	12	15

Per-Rep Calories by Pace (50 standard sit-ups)

Pace	55 kg	70 kg	85 kg	100 kg
Slow (12 rpm)	0.305	0.388	0.471	0.554
Moderate (18 rpm)	0.203	0.259	0.314	0.369
Fast (24 rpm)	0.152	0.194	0.236	0.277
Very Fast (30 rpm)	0.122	0.155	0.188	0.222

How the Estimate Works

The calculator uses the MET formula with separate work and rest phases:^[1]

Work Calories = (MET × 3.5 × Wt_kg × Work_min) ÷ 200

Rest Calories = (1.0 × 3.5 × Wt_kg × Rest_min) ÷ 200

Total = Work Calories + Rest Calories

Work duration is derived from total reps divided by pace (reps per minute). In set-rep mode, rest duration equals (sets - 1) × rest seconds between sets.

Sit-Up Variations Explained

Standard Sit-Up (3.8 MET)

Full range of motion from lying flat to sitting up. Feet typically anchored. The baseline core exercise for most programs.^[3]

Decline & Weighted (4.5-5.0 MET)

Decline bench or added plate resistance increase the effort per rep by 18-32% compared to standard sit-ups.^[2]

V-Up (6.0 MET)

Full-body exercise where legs and torso meet simultaneously. Engages both upper and lower abdominals with the highest MET of all sit-up variations.^[5]

Bicycle Crunch & Russian Twist (3.8-4.0 MET)

Rotational movements targeting the obliques. Similar energy demand to standard sit-ups but with different muscle emphasis.^[4]

Medicine Ball Sit-Up (5.5 MET)

Combining sit-up motion with a weighted throw. The ballistic component adds an explosive element, raising the MET significantly.^[1]

Crunch & Reverse Crunch (2.8-3.0 MET)

Shorter range of motion than full sit-ups. Crunches isolate the upper abs while reverse crunches focus on the lower portion.^[6]

Pace and Intensity

Sit-up pace determines how long it takes to complete a given number of reps, which directly affects the duration used in the MET formula:

Slow (12 rpm): 50 reps take ~4.2 minutes. Controlled with full pauses.
Moderate (18 rpm): 50 reps take ~2.8 minutes. Typical training tempo.
Fast (24 rpm): 50 reps take ~2.1 minutes. Quick but controlled.
Very Fast (30 rpm): 50 reps take ~1.7 minutes. Max sustained speed.

Per-rep calorie count remains constant across paces for the same variation, because the MET formula scales linearly with time.^[1]

Body Weight Factor

Body weight has a direct linear effect on sit-up calorie estimates. A 100 kg person burns approximately 43% more per rep than a 70 kg person doing the same variation at the same pace.^[5]

This is because the MET formula multiplies directly by body weight -- heavier individuals expend more energy to move their mass through each repetition.

Frequently Asked Questions

Sources & References

Conditioning Exercise - Compendium of Physical Activities. Compendium of Physical Activities. PAC Compendium (2024)
Exercise intensity and energy expenditure. ScienceDirect. Journal of Sport and Health Science (2015)
Core exercise analysis and energy cost. PubMed. Journal of Strength and Conditioning Research (2009)
Sit-up biomechanics and movement analysis. ScienceDirect. Manual Therapy (2003)
Core training and performance outcomes. PMC. Sports Medicine (2015)
Evaluation of anthropometric factors in sit-up test. The Sport Journal. The Sport Journal (2020)

Manish Kumar

Certified Personal Trainer & Sports Nutritionist

NASM-CPTCertified Sports Nutritionist10+ Years Experience500+ Clients Coached

NASM-certified fitness and nutrition coach with over 10 years of hands-on experience helping people build strength, lose fat, and live healthier lives. Specializing in gym-based workouts with a strong focus on lifting technique, biomechanics, and practical exercise science. Through FitLifeRegime, sharing the tools, tips, and insights that have worked for hundreds of clients — helping you start your own fitness journey with confidence and clarity.

Learn more about Manish

NASM Certified

Certified Personal Trainer & Sports Nutritionist from the National Academy of Sports Medicine

This tool is for informational and journaling purposes only.

I am NOT a doctor.