ποΈ Weight Lifting Calorie Calculator
Estimate what your strength session burns, from body weight and training intensity.
Estimated Calories Burned
For informational purposes only, not medical advice. Consult a healthcare professional.
How to Use This Lifting Calorie Calculator
Strength training burns fewer calories per minute than cardio, but it builds the muscle that raises daily burn around the clock. Enter your body weight, how long you trained, and how hard the session was. The calculator applies the standard MET values for resistance exercise and returns your estimated burn.
Enter your body weight. Bigger lifters move bigger loads and burn more.
Enter total session time in minutes, including rest periods between sets.
Pick moderate for machine circuits with generous rests, or vigorous for free-weight compound lifts with short rests and supersets.
Read the total. Expect a modest number compared with running: that is normal and honest.
The Formula: METs for Resistance Training
The Compendium of Physical Activities assigns 3.5 MET to light-to-moderate resistance training and 6.0 MET to vigorous effort with free weights. The formula is the standard MET equation: multiply METs by 3.5 ml of oxygen per kg per minute, convert to calories with body weight, and scale by duration. A 90 kg lifter training vigorously for 60 minutes burns 6 x 3.5 x 90 / 200 x 60 = 567 calories. The same session at moderate intensity is 331 calories. These are session averages; a heavy set of squats spikes far above 6 MET for its 30 seconds, then the rest period drops near 1.5.
Worked Example
Enter 180 lb, 60 minutes, vigorous. Convert weight: 180 / 2.20462 = 81.65 kg. Calories = 6 x 3.5 x 81.65 / 200 x 60. Work it through: 6 x 3.5 = 21; 21 x 81.65 = 1714.6; divided by 200 = 8.573; times 60 minutes = 514.4 calories. That is 8.57 calories per minute. Switch the intensity to moderate (3.5 MET) and the same session gives 300 calories. Run both cases through the calculator and confirm the numbers match.
Why Lifting Burns Less Than You Hope
An hour of hard lifting burns roughly what 25 to 35 minutes of running burns, and that disappoints people who lift for fat loss. The value of lifting is elsewhere: each pound of muscle raises resting burn slightly, lifting preserves muscle in a calorie deficit so the weight lost is fat not muscle, and the afterburn (excess post-exercise oxygen consumption) runs higher after intense lifting than after easy cardio. Judge lifting by strength gained and measurements changed, not by the calorie number on this page. The burn estimate is for honest food budgeting, not for motivation.
Making Sessions Burn More
Shorten rest periods to 60 to 90 seconds, favor compound lifts (squats, deadlifts, presses, rows) over isolation work, and add supersets or circuits to keep the heart rate up. A circuit-style full-body session can push the effective intensity well above the 6 MET default. Track rest with a timer; most lifters rest far longer than they think. None of this replaces progressive overload for building strength, but if calorie burn is a secondary goal, density of work is the lever that moves it.
Second worked example: 150 lb, 45 minutes, moderate
Enter 150 lb, 45 minutes, moderate (3.5 MET). Convert: 150 / 2.20462 = 68.04 kg. Calories = 3.5 x 3.5 x 68.04 / 200 x 45 = 12.25 x 68.04 = 833.5; / 200 = 4.167; x 45 = 187.5 calories. Per minute: 4.17. Compare with the first example: the 180 lb lifter training vigorously for 60 minutes burned 514.4, while this lighter, easier session gives 187.5. Intensity matters more than duration here: vigorous at 6 MET burns 71 percent more per minute than moderate at 3.5 MET. Enter both cases in the calculator. The gap explains why a focused 45-minute session with short rests out-burns a chatty 90-minute one.
Lifting vs cardio for fat loss: the honest math
Per minute, cardio wins easily: running burns 10 to 12 calories per minute for most adults, vigorous lifting burns 6 to 9. But fat loss is a months-long project, and lifting brings two things cardio does not. First, muscle preservation: in a calorie deficit without lifting, roughly a quarter of lost weight can be lean mass; with lifting, nearly all of it is fat. Second, resting burn: each pound of muscle adds about 6 calories per day to resting metabolism, small per pound but meaningful across 10 new pounds. The winning combination is both: 3 to 4 lifting sessions weekly for body composition, plus 2 to 3 cardio sessions for the calorie deficit and heart health. Either alone is a compromise.
Afterburn deserves a realistic mention. Intense lifting raises post-exercise burn for 24 to 48 hours, but the total is roughly 6 to 15 percent of the session, perhaps 30 to 75 extra calories on a 500-calorie session. Real, but not a license to eat an extra meal. Count the session, bank the afterburn as a bonus.
Common lifting-calorie mistakes
Mistake one is logging only the working sets. The calculator wants total session time including rests, because the MET value already averages work and rest together. Entering 20 minutes of "actual lifting" from a 60-minute session understates the total by two-thirds. Mistake two is picking vigorous for a machine circuit with 3-minute rests. Be honest about rest periods: if you spend half the session on your phone, that is moderate. Mistake three is chasing the burn instead of the progression. Sessions engineered for maximum calories, endless supersets with light weights, build less strength than focused heavy work. Program for strength, let the burn be what it is, and get your cardio from cardio.
For informational purposes only, not medical advice. Consult a healthcare professional.
The Afterburn: EPOC in Plain Numbers
Lifting has one calorie trick cardio does not: excess post-exercise oxygen consumption, the "afterburn." After a hard session your body keeps burning extra calories for hours while it repairs muscle and restores fuel. For resistance training the effect runs about 6 to 15% of the session's calories, so a 300-calorie workout earns you roughly 18 to 45 bonus calories afterward. It is real, it is measurable, and it is much smaller than fitness marketing suggests.
The practical takeaway: never count the afterburn in your calorie budget. Track the session burn, eat to that, and let EPOC be a rounding error in your favor. The far bigger metabolic prize from lifting is muscle itself: each pound of muscle burns roughly 6 calories a day at rest versus 2 for a pound of fat, which compounds across years, not hours. Afterburn is a nice footnote. Muscle is the story.
Frequently Asked Questions
How many calories do you burn lifting weights for an hour?
Typically 200 to 400 calories for most adults, depending on body weight and intensity. A 180 lb person lifting vigorously for 60 minutes burns about 514 calories by the standard MET formula. Moderate machine sessions burn less.
Does lifting weights burn more calories than cardio?
No, per minute cardio burns roughly twice as much. An hour of running burns 600 to 900 calories versus 200 to 500 for lifting. Lifting wins on muscle preservation, strength, and long-term metabolic health, not per-session burn.
Do you keep burning calories after lifting?
Yes, through excess post-exercise oxygen consumption (EPOC). Intense lifting elevates metabolism for hours afterward, though the effect is modest, roughly 6 to 15 percent of the session burn, not the huge afterburn some programs claim.
Does building muscle burn more calories at rest?
Yes, but less than often claimed. A pound of muscle burns about 6 calories per day at rest versus 2 for a pound of fat. Gaining 10 pounds of muscle adds roughly 60 daily calories, helpful but not transformative.
How accurate are weight lifting calorie estimates?
Moderately. MET values average across many people and styles, so individual sessions vary with rest times, load, and exercise choice. Treat the number as a reasonable estimate for food budgeting, not a lab measurement.
Should I eat back calories burned lifting?
If fat loss is the goal, eat back at most half the estimate, since the numbers already run optimistic and hunger rises after training. If gaining muscle, the estimate helps you confirm you are actually in a surplus.
What burns more: heavy low reps or light high reps?
Per session, higher-rep circuits with short rests usually burn more because the heart rate stays elevated. Heavy low-rep work builds more strength. Most good programs include both across the week.
Do compound lifts burn more calories than isolation?
Yes. Squats, deadlifts, and presses recruit far more muscle mass than curls or extensions, so the energy cost per set is much higher. Build sessions around compounds and add isolation as accessory work.
How many calories does a 30-minute lifting session burn?
Roughly 100 to 250 calories for most adults. A 160 lb person at vigorous intensity burns about 218 calories in 30 minutes. Short, dense sessions are efficient but will not match a long run.
Is the calorie burn worth tracking for lifters?
For food budgeting, yes. For motivation, no. Track weights lifted, reps, and body measurements instead; those reflect what lifting actually does. Use the calorie number only to keep diet math honest.