Calories Burned Running Calculator: Accurate & Free
Use our free calories burned running calculator to estimate your exact burn by weight, pace, and distance. Learn the science behind every result.
Frequently Asked Questions
How many calories do I burn running a mile?
A 155 lb (70 kg) person burns approximately 100 calories per mile at a moderate pace. Lighter runners burn 80–85 calories per mile; heavier runners burn 120–140 calories per mile. Body weight is the single largest variable — pace matters less per mile than most people assume.
How many calories does a 30-minute run burn?
At a moderate pace of 6 mph, a 155 lb person burns roughly 360–400 calories in 30 minutes. At a slower 5 mph jog, that drops to about 280–300 calories. At a brisk 7.5 mph, it climbs to 450–490 calories for the same half hour.
Does running on a treadmill burn fewer calories than outside?
Yes — outdoor running burns approximately 3–7% more calories due to wind resistance and terrain variation. Setting your treadmill to a 1–2% incline largely compensates for this difference and more closely simulates outdoor running energy expenditure.
Do you burn more calories running faster or longer?
Both increase total calorie burn, but in different ways. Running faster burns more calories per minute (higher MET value). Running longer burns more calories in total. For weight loss, distance matters more than pace because calories per mile stays relatively constant regardless of speed.
Why does my fitness watch show different calories than the formula?
Fitness watches use heart rate–based algorithms that account for your individual fitness level, age, and sex — producing more personalized estimates than population-average MET formulas. Neither method is perfectly accurate; real-world variation is typically ±15–20% from any formula.