Calorie Burn Calculator

Estimate calories burned during physical activity from its MET (metabolic equivalent of task) value, your body weight, and the duration. Choose from a built-in list of common activities (Ainsworth compendium values) or enter a custom MET. The formula is kcal = MET × weight (kg) × time (hours). Estimates are rough — actual burn varies with fitness, intensity, and metabolism. Everything runs locally in your browser.

Activity

Weight

Hours

Minutes

Custom MET:

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Enter weight and duration.

MET values are from the Ainsworth Compendium of Physical Activities. kcal = MET × weight_kg × hours (equivalently MET × 3.5 × weight_kg / 200 × minutes). A MET of 1 ≈ resting. Estimates are approximate. Runs locally.