Estimate the energy an adult body may use at rest using age, height, weight, and the selected equation constant.
Calculate with the BMR Calculator
Enter the details below. Your values stay in this browser and are validated before results are shown.
BMR Calculator results
BMR Calculator comparison
Exact values are provided in the accessible result table.
How to use the BMR Calculator
- Select the requested method and unit system where available.
- Enter measured values carefully using the labels and active units.
- Select Calculate or press Enter.
- Read the estimate together with its method, assumptions, limitations, and safety notice.
Worked example
For a 30-year-old using the male equation at 70 kg and 175 cm, estimated BMR is about 1,649 kcal/day.
Interpreting the estimate
BMR estimates resting energy use. Activity-adjusted maintenance values are displayed only as context and are not the BMR itself.
Limitations
- Measured resting energy expenditure can differ.
- The equation does not model pregnancy, breastfeeding, growth, illness, or individual body composition.
Frequently asked questions
Is BMR the same as daily calorie need?
No. BMR estimates resting energy expenditure. Daily maintenance estimates also account for activity and other energy use.
Is the BMR calculator a medical assessment?
No. It provides an educational estimate from the values entered and cannot account for every individual or clinical factor.
Does CalculatorCheck store my health information?
No. The calculation runs in your browser, and the entered values are not sent to a server or added to the page URL.