Workout Calorie Burn Calculator

Analyze calories for walking, running, cycling, lifting, sports. See gross burn, net burn, and averages. Make better training decisions with quick, practical energy estimates.

Calculator inputs

Body weight

Weight unit

Workout duration

Duration unit

Workout activity

Custom MET

Intensity multiplier

Terrain or resistance multiplier

Movement efficiency multiplier

Sessions per week

Distance covered

Distance unit

Example data table

Activity	Weight	Duration	Base MET	Adjusted MET	Estimated calories
Brisk walking	65 kg	40 min	5.0	5.25	227.50
Running	78 kg	45 min	9.8	10.29	602.00
Cycling	72 kg	60 min	8.0	8.40	604.80

Formula used

Gross calories = Adjusted MET × Body weight in kilograms × Duration in hours.

Adjusted MET = Base MET × Intensity multiplier × Terrain or resistance multiplier × Movement efficiency multiplier.

Net active calories = (Adjusted MET − 1) × Body weight in kilograms × Duration in hours.

MET means metabolic equivalent of task. One MET approximates resting energy use, so net calories remove the resting portion from the estimate.

How to use this calculator

Enter your body weight and choose kilograms or pounds.
Add your workout duration and pick minutes, hours, or seconds.
Select the closest activity, or choose a custom MET value.
Adjust intensity, terrain, or efficiency if the session was harder or easier than average.
Add weekly frequency and distance to estimate pace and weekly totals.
Press Calculate burn to show results above the form.
Use the CSV button for spreadsheet exports or PDF for a clean shareable summary.

Frequently asked questions

1. What does this calculator estimate?

It estimates workout calories burned from activity MET, body weight, duration, and optional modifiers such as intensity, terrain, and efficiency.

2. What is a MET value?

MET stands for metabolic equivalent of task. It compares an activity’s energy demand with resting energy use. Higher MET values usually mean higher calorie burn.

3. Why are gross and net calories different?

Gross calories include total energy used during the session. Net calories subtract the energy your body would likely use at rest during that same period.

4. Can I use pounds instead of kilograms?

Yes. The calculator accepts pounds and converts them internally to kilograms, because the calorie formula uses body weight in kilograms.

5. When should I use a custom MET?

Use a custom MET when your workout is not listed, or when you have a reliable MET value from research, lab testing, or specialized training references.

6. Are these calorie results exact?

No. They are informed estimates. Real calorie burn changes with fitness level, body composition, technique, temperature, and individual metabolic variation.

7. What does the weekly total show?

The weekly total multiplies calories from one session by your selected sessions per week. It helps compare training plans over time.

8. Why include terrain and efficiency multipliers?

They let you refine the estimate. Hills, resistance, or inefficient movement can raise energy demand, while easier conditions can reduce it.