Health & Fitness
BMR Calculator - Basal Metabolic Rate
Calculate your basal metabolic rate (BMR) using the Mifflin-St Jeor formula.
Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.
Frequently asked questions
What is BMR?
BMR is the number of calories your body burns at rest in a day.
Is this the same as TDEE?
No. TDEE includes activity; BMR is the baseline without activity.
Which formula is used?
This calculator uses the Mifflin-St Jeor equation.
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About this tool
This BMR Calculator turns your inputs into practical results. Provide Weight, Height, and Age to calculate BMR.
Adjust values to compare scenarios and see how sensitive the result is. The calculation uses the numbers as entered, so double-check units and expect small differences from rounding in the displayed totals.