Health & Fitness
BMR Calculator
Estimate basal metabolic rate using the Mifflin–St Jeor equation.
How to use the bmr calculator
Estimate basal metabolic rate using the Mifflin–St Jeor equation. Enter the requested values and select Calculate result. Check the units and options before interpreting the answer.
Formula and calculation method
Male equation: 10W + 6.25H − 5A + 5. Female equation: 10W + 6.25H − 5A − 161.
Worked example
Enter adult weight, height, age and equation option to estimate kcal/day.
Limitations and interpretation
Results depend on inputs, assumptions and rounding. Verify results before using them for consequential decisions. Health estimates are not medical diagnoses.
Frequently asked questions
Is BMR total daily energy use?
No. Total needs also account for activity.
Are results exact?
No, they are estimates.