How many calories does weightlifting burn?

Weightlifting burns approximately 4-10 calories per minute for a 70 kg person, depending on training style and intensity (MET range: 3.5-8.0). A 70 kg person doing moderate effort training (5.0 MET) for 45 minutes estimates approximately 276 kcal.

Does rep speed affect calorie estimates?

Yes. In set-rep mode, slower reps (5s/rep) result in longer work durations than explosive reps (2s/rep) for the same number of reps. This increases total time under the exercise MET, leading to higher calorie estimates.

Why does powerlifting have the same MET as moderate training?

Powerlifting (5.0 MET) involves heavy loads but long rest periods (3-5 minutes). The Compendium assigns the same MET because the average energy expenditure per minute of total session time is similar to moderate general training.

How does the set-rep mode handle rest periods?

Rest periods between sets are calculated at resting MET (1.0). Work duration is derived from total reps × seconds per rep. Total calories sum both work and rest phase estimates.

Is CrossFit-style training really 8.0 MET?

CrossFit WODs combine Olympic lifts, gymnastics, and metabolic conditioning with minimal rest. The sustained high-output format places it in the vigorous exercise category at 8.0 MET.

Does the calculator account for the weight being lifted?

The MET values reflect the training style and typical loads used. The calculator uses body weight in the MET formula. The weight being lifted is implicitly captured by the training style MET selection.

Weightlifting Calories Burned Calculator

Name: Weightlifting Calories Burned Calculator
Author: Manish Kumar

Key Takeaways

Weightlifting MET values range from 3.5 (light machine work) to 8.0 (CrossFit-style WODs) according to the Compendium.^[1]
A 45-minute moderate effort session (5.0 MET) estimates approximately 276 kcal for a 70 kg person.^[3]
Set-rep mode accounts for rep speed, with slow controlled reps (5s/rep) taking more total time under tension than explosive reps (2s/rep).^[4]
Rest periods between sets (at 1.0 MET) often constitute a significant portion of total session time in strength training.^[5]
These are informational estimates for personal journaling. Actual expenditure varies with load, exercise selection, and effort.

Quick Weightlifting Calorie Charts

Estimated kcal for 45 minutes. For informational reference only.

Training Style	MET	55 kg	70 kg	85 kg	100 kg
Light Effort (Machines)	3.5	152	193	234	276
Moderate Effort (General)	5	217	276	335	394
Vigorous Effort (Compound)	6	260	331	402	473
Powerlifting	5	217	276	335	394
Bodybuilding / Hypertrophy	5.5	238	303	368	433
Olympic Lifting	6.5	282	358	435	512
CrossFit-Style WOD	8	347	441	536	630

How the Estimate Works

The calculator applies the MET formula with separate work and rest phases in set-rep mode:^[1]

Work Duration = Total Reps × Seconds Per Rep

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

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

Time-based mode applies the style MET to the full session duration, which is a simpler estimate that accounts for both work and rest as a continuous period.

Training Styles Explained

Light Effort / Machines (3.5 MET)

Machine-based training with light resistance. Guided movement paths with extended rest periods. Typical for rehabilitation or beginners.^[1]

Moderate Effort / General (5.0 MET)

Free weight training at moderate loads (60-75% 1RM). Standard gym sessions with balanced work-rest ratios.^[5]

Powerlifting (5.0 MET)

Squat, bench press, and deadlift focus. Heavy loads (80-95% 1RM) with extended rest periods (3-5 minutes) between sets.^[4]

Bodybuilding / Hypertrophy (5.5 MET)

Higher volume (8-15 reps), moderate loads with shorter rest (60-90s). The sustained work rate produces slightly higher MET than powerlifting.^[6]

Olympic Lifting (6.5 MET)

Clean, snatch, and jerk movements. Explosive compound lifts that require full-body power generation in every rep.^[4]

CrossFit-Style WOD (8.0 MET)

Mixed-modality workouts with minimal rest. Combines Olympic lifts, gymnastics, and metabolic conditioning in a circuit-style format.^[7]

Rep Speed Guide

Rep speed determines the work duration in set-rep mode:

Slow / Controlled (5s/rep): Full eccentric and concentric control. Maximizes time under tension.
Moderate (3.5s/rep): Standard lifting tempo. Balanced between control and pace.
Explosive (2s/rep): Fast, powerful reps. Typical for Olympic lifts and power movements.

Slower reps accumulate more total work time and therefore more calories for the same number of reps, despite using the same MET value.

Frequently Asked Questions

Sources & References

Conditioning Exercise - Compendium of Physical Activities. Compendium of Physical Activities. PAC Compendium (2024)
Abdominal exercise physiology. PMC. PMC (2025)
Exercise energy expenditure. PMC. PMC (2019)
Weightlifting training effects. ResearchGate. ResearchGate (2021)
Resistance training research. PMC. PMC (2021)
Strength training time benefits. Harvard HSPH. Harvard T.H. Chan School of Public Health (2024)
Weightlifting study. ScienceDirect. ScienceDirect (2025)

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.