Calorie Burn Calculator: Estimate Your Running Workout Calories

Input distance, time, weight, age and average heart rate; the tool converts kilometres to miles and applies a validated ACSM equation to estimate calories burned. A 65 kg runner covering 10 km in 45 min at 142 bpm expends about 293 kcal. Average runners burn ~100 kcal per mile (Harvard Health Publishing, 2021).