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BMR Calculator

Estimate how many calories your body uses at rest with the Mifflin-St Jeor equation.

Enter your details to see an estimate.

BMR is an estimate of resting energy needs, not a diagnosis or a prescription for daily calorie intake.

How BMR is used

BMR can be used as a starting point when estimating total daily energy expenditure (TDEE). Activity, body composition and other factors affect actual energy needs.

Use the TDEE calculator →