Calories Burned Calculator
How many calories does your workout actually burn?
The calories burned calculator estimates how many kilocalories you burn during exercise using the scientifically validated MET (Metabolic Equivalent of Task) formula. Select your activity, enter your body weight and workout duration, and get an accurate calorie burn estimate — along with a comparison across 8 other activities for the same effort.
How the MET formula works
MET is a measure of exercise intensity relative to sitting at rest (1 MET = ~1 kcal per kg per hour). The formula is:
Calories = MET × weight (kg) × time (hours)
For example, running at a moderate pace (MET 8.0) for 30 minutes at 70 kg: 8.0 × 70 × 0.5 = 280 kcal. A heavier person burns more calories doing the same activity at the same intensity because their body requires more energy to move.
Calories burned by activity — comparison at 70 kg / 30 minutes
| Activity | MET | Calories (30 min) |
|---|---|---|
| Jump rope | 11.0 | 385 kcal |
| Running (10 km/h) | 9.8 | 343 kcal |
| Swimming (vigorous) | 9.8 | 343 kcal |
| Running (8 km/h) | 8.0 | 280 kcal |
| Cycling (vigorous) | 8.0 | 280 kcal |
| HIIT | 8.0 | 280 kcal |
| Rowing (moderate) | 7.0 | 245 kcal |
| Soccer | 7.0 | 245 kcal |
| Cycling (moderate) | 6.0 | 210 kcal |
| Swimming (leisure) | 5.8 | 203 kcal |
| Hiking | 5.3 | 186 kcal |
| Elliptical | 5.0 | 175 kcal |
| Walking (brisk) | 4.3 | 151 kcal |
| Weight training | 3.5 | 123 kcal |
| Walking (moderate) | 3.5 | 123 kcal |
| Yoga | 2.5 | 88 kcal |
Why body weight matters
Calories burned scale directly with body weight — a 90 kg person burns roughly 29% more calories than a 70 kg person doing the exact same workout. This is why calorie estimates on gym machines (which don't know your weight) are often significantly wrong.
Calories burned vs. calories eaten
Exercise burns fewer calories than most people expect. A 30-minute run at 8 km/h burns about 280 kcal at 70 kg — equivalent to one chocolate bar or two slices of bread with butter. This is why diet has a much larger impact on weight loss than exercise alone. Use this calculator alongside the TDEE calculator to see your full daily energy balance.
Example
A 75 kg person goes for a 45-minute moderate run (8 km/h). Select "Running — moderate (8 km/h)", enter 75 kg and 45 minutes.
Calories = 8.0 × 75 × 0.75 = 450 kcal. That's equivalent to about 1.6 slices of pizza, or a large latte and a muffin.
The comparison table also shows that the same 45 minutes of cycling at the same intensity would burn the same 450 kcal — but yoga would only burn 141 kcal and jump rope would burn 619 kcal. Use this to choose the activity that fits your schedule and calorie target.