All tools

BMR Calculator

Resting calorie needs (Mifflin, Harris-Benedict, Katch).

BMR (mifflin)
1,737
calories at rest

Daily calorie needs by activity

  • Sedentary (desk job)2,085 cal
  • Light (1-3 workouts/wk)2,389 cal
  • Moderate (3-5/wk)2,693 cal
  • Active (6-7/wk)2,997 cal
  • Athletic (2x/day)3,301 cal

Mifflin-St Jeor: 1,737 cal

Harris-Benedict: 1,804 cal

Katch-McArdle: 1,702 cal

BMR is what you burn at rest. TDEE includes activity. Mifflin-St Jeor (1990) outperforms Harris-Benedict for most adults. Katch-McArdle is best if you know your body fat percentage accurately.

About

Calculates basal metabolic rate using three formulas. Mifflin-St Jeor (1990) is the modern default. Harris-Benedict (revised 1984) is the classic. Katch-McArdle uses lean body mass when you know body fat percentage.

How to use

  1. Pick imperial or metric.
  2. Enter age, sex, weight, height.
  3. Read BMR and calorie targets.

FAQ

What's the difference from TDEE?+

BMR is what you burn at rest. TDEE adds activity. Multiply BMR by your activity factor (1.2 sedentary to 1.9 athletic) to get TDEE.