What this calculator does
Calories burned by heart rate works out energy burned during exercise from average heart rate, age, weight and sex. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaMen: kcal = T×(0.6309H + 0.1988W + 0.2017A − 55.0969)/4.184. Women: kcal = T×(0.4472H − 0.1263W + 0.074A − 20.4022)/4.184
The inputs explained
| Field | What to enter |
|---|---|
| Sex | Choose from Male, Female. |
| Age (years) | A number, measured in years. Starts at 30. |
| Weight (kg) | A number, measured in kg. Starts at 75. |
| Average heart rate during exercise (bpm) | A number, measured in bpm. Starts at 140. |
| Duration (minutes) | A number, measured in minutes. Starts at 45. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with age
Every other input is held at the calculator’s starting values while age varies. Select any row to load that scenario into the calculator.
How the answer changes with age
| Age (years) | Calories burned | Per minute | Formula used |
|---|---|---|---|
| 15 | 550 kcal | 12.2 kcal | Keytel et al. (2005) heart-rate regression equation |
| 22.5 | 567 kcal | 12.6 kcal | Keytel et al. (2005) heart-rate regression equation |
| 30 | 583 kcal | 13.0 kcal | Keytel et al. (2005) heart-rate regression equation |
| 45 | 615 kcal | 13.7 kcal | Keytel et al. (2005) heart-rate regression equation |
| 60 | 648 kcal | 14.4 kcal | Keytel et al. (2005) heart-rate regression equation |
| 90 | 713 kcal | 15.8 kcal | Keytel et al. (2005) heart-rate regression equation |