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Calorie Burn Calculator

Calculate calories burned for 40+ activities using MET values from the Compendium of Physical Activities (Ainsworth et al.). Find your fat burn and food equivalents.

ℹ️ How to use
  1. Choose Metric or Imperial and enter your body weight
  2. Select your activity from the grouped dropdown
  3. Enter duration in hours and minutes
  4. Click Calculate to see your calorie burn, fat loss and food equivalents

⚠️ Results are estimates based on MET values. Actual burn varies by fitness level, age, and effort intensity.

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❓ Frequently Asked Questions

How many calories does walking burn?

Walking at 5 km/h burns approximately 3.5 × your weight (kg) calories per hour. A 70 kg person burns about 245 calories in one hour of brisk walking. The exact amount depends on your pace, terrain, and body weight.

Which exercise burns the most calories?

High-intensity activities like boxing (MET 12.8), running at 16 km/h (MET 16), and jump rope (MET 11.8) burn the most calories per hour. A 70 kg person can burn over 800 calories per hour with these activities.

How accurate are MET values for calorie calculation?

MET (Metabolic Equivalent of Task) values from the Compendium of Physical Activities are scientifically validated averages. Individual results vary by fitness level, age, muscle mass, and effort. The formula gives a good estimate — typically within 10–20% of actual expenditure.

Can I lose weight with 30 minutes of exercise daily?

Yes. 30 minutes of moderate exercise (e.g., brisk walking or cycling) can burn 150–300 calories. Combined with a mild caloric deficit in diet, this contributes to sustainable weight loss of 0.25–0.5 kg per week.

How long does it take to burn 500 calories?

It depends on the activity and your weight. A 70 kg person burns 500 calories in about 60 min of running (10 km/h), 70 min of cycling (16 km/h), 85 min of brisk walking, or 42 min of boxing.

How Your Body Burns Calories — The Science Behind the Numbers

Your body burns calories continuously — even while you're sleeping. Understanding the different components of energy expenditure helps you set realistic expectations about exercise and weight loss, and avoid the most common mistake: overestimating how many calories exercise burns.

Components of Total Daily Energy Expenditure (TDEE)

MET Values — The Calculation Basis

This tool uses Metabolic Equivalent of Task (MET) values — a standard measure where 1 MET = energy expended at rest. Slow walking is 2.5 METs (2.5× resting energy burn). Running at 8 km/h is about 8.3 METs. Formula: Calories/min = MET × weight (kg) × 3.5 ÷ 200. Our tool applies this formula with ACSM-validated MET values for 44 activities.

The Reality of Exercise and Weight Loss

A 45-minute moderate jog burns roughly 350–450 calories for a 70 kg person. A single samosa is about 250 calories. This is why exercise alone — without dietary changes — typically produces slower weight loss than expected. Combining a 300–500 calorie/day dietary deficit with regular exercise is more effective and sustainable than extreme exercise or extreme dieting alone.

Indian context: Activities like brisk walking (maanikam), yoga, and cricket are underrepresented in Western MET databases. Our tool includes Indian-relevant activities. Note that Bikram/hot yoga burns slightly more calories than the MET suggests due to thermal stress.