Calories Burned Running Calculator
Enter your body weight and how far you ran to estimate the calories you burned, along with the calories burned per mile and per kilometer. Running burn depends mostly on your weight and distance, not your speed.
How to calculate calories burned running
Running burns roughly 1.036 calories per kilogram of body weight per kilometer, a figure that holds reasonably well across paces because covering the same distance takes about the same total work whether you run it fast or slow. Multiply your weight in kilograms by the distance in kilometers, then by 1.036. Heavier runners and longer distances burn more. This is a gross estimate; terrain, wind, running economy, and fitness all shift the real number.
Calories = body weight (kg) x distance (km) x 1.036
Worked example
A 160 lb (72.6 kg) runner covers 3 miles (4.83 km).
- Calories per km: 72.6 x 1.036 = about 75.2
- Distance: 3 miles = 4.83 km
- Calories burned: 75.2 x 4.83 = about 363
- Per mile: 75.2 x 1.609 = about 121 calories
Result: About 363 calories for the 3-mile run, roughly 121 per mile.
Frequently asked questions
How many calories does running burn?
Roughly 1 calorie per kilogram of body weight per kilometer, so a 70 kg person burns about 70 calories per km, or around 113 per mile. Over a 5 km run that is about 360 calories. Heavier runners burn proportionally more.
Does running faster burn more calories?
For the same distance, not by much. The total work to move your body a set distance is similar across paces, so a 3-mile run burns roughly the same calories whether it takes 24 or 36 minutes. Running faster burns more per minute, but you also finish sooner.
Why does weight matter so much?
Calories burned scale almost directly with body weight, because moving a heavier body the same distance takes more energy. That is why the formula multiplies by your weight: a 90 kg runner burns about 30% more than a 70 kg runner over the same route.
Is this gross or net calories?
It is a gross estimate, the total energy used during the run. Your net burn (above what you would have burned resting) is a little lower. For weight management, gross figures like these are the common reference, but treat any calorie estimate as approximate.