Health & Fitness Calculators

BMR Calculator (Mifflin-St Jeor)

Enter your sex, weight, height, and age to calculate your basal metabolic rate (calories burned at complete rest).

1779 calories/day
estimated basal metabolic rate

Uses the Mifflin-St Jeor equation, widely considered the most accurate common BMR formula. This is the energy your body burns at complete rest — multiply by an activity factor (see the TDEE calculator) to estimate total daily calorie needs.

How to use this tool

  1. 1Enter your sex, weight, height, and age.
  2. 2See your estimated BMR in calories per day.

Frequently asked questions

How is BMR different from TDEE?+

BMR is calories burned at complete rest; TDEE multiplies BMR by an activity factor to estimate total daily calorie needs including movement and exercise.

Related tools