BMR
Estimate basal metabolic rate and daily maintenance calories. Free online calculator with formulas and step-by-step solutions.
Key formula
Mifflin-St Jeor equation
About this tool
BMR estimates baseline energy use at rest. It is helpful because it gives users a starting point for calorie planning, but it is still only one layer of total daily energy needs.
How to use this calculator
- Enter realistic personal values and double-check the chosen unit system before calculating.
- Use the result as a planning estimate, not as a diagnosis or guaranteed outcome.
- Compare the output with your goal, context, and any relevant professional guidance.
- Review the steps to understand how the estimate was produced from your inputs.