BMR Calculator

Estimate how many calories your body uses each day at rest.

About the BMR Calculator

Basal metabolic rate estimates the energy your body uses for essential functions while at rest, such as breathing and circulation.

How to use it

  1. Select the gender used by the equation.
  2. Enter your age in years.
  3. Enter your height in centimeters and weight in kilograms.
  4. Calculate to see an estimated number of calories per day.

Mifflin-St Jeor formula

For males: BMR = 10 × weight (kg) + 6.25 × height (cm) - 5 × age + 5. For females, the final adjustment is -161 instead of +5.

Important limitation

BMR is an estimate and individual needs can differ. Results are for general reference only and do not replace professional medical or nutrition advice.

Example

Using the male equation for age 30, height 175 cm and weight 70 kg gives an estimated BMR of about 1,649 calories per day.