How to use this bmr calculator
Enter the requested values above and select Calculate. The result updates immediately on the page, so you can change one value and compare different scenarios without leaving the calculator.
Formula and method
Example
The estimate represents calories per day at rest, not a personalized medical recommendation.
What this calculator is useful for
Estimate basal metabolic rate using the Mifflin–St Jeor equation. It is designed for quick estimates and everyday problem solving. When a calculation affects a contract, tax filing, medical decision or other high-stakes situation, verify the result with the appropriate professional or authoritative source.
Frequently asked questions
What does the BMR Calculator calculate?
Estimate basal metabolic rate using the Mifflin–St Jeor equation.
How does the calculation work?
Mifflin–St Jeor: BMR = 10W + 6.25H − 5A + s, using kg, cm, age and a sex-specific constant.
Is this calculator free?
Yes. ERICH Calculators is free to use and no account is required.