This heart rate calorie calculator estimates calories burned during exercise from your average heart rate, weight, age, sex, and duration. Enter the values above.
Formula (men)
kcal/min = (−55.0969 + 0.6309×HR + 0.1988×W + 0.2017×age) ÷ 4.184
Example
HR 140, 80 kg, 30 years, 30 min: about 396 kcal.
Women use a slightly different formula; both are estimates that vary with fitness.
Important
This tool is for general educational purposes only and is not medical advice, diagnosis, or treatment. It does not replace evaluation by a qualified healthcare professional — consult one for any health decision. Last updated: August 2026.
Frequently Asked Questions
How do I calculate calories burned from heart rate?
Use the published heart-rate formula with your average HR, weight, age, and sex, then multiply by the minutes.
Is heart rate a good calorie estimate?
It is better than MET tables for steady cardio, but still an estimate; devices with chest straps read more accurately.
Why does age affect the calculation?
Age influences the heart-rate-to-energy relationship, so it is part of the formula.