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BMR calculator

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Estimate your basal metabolic rate (BMR) – the calories your body uses at rest – and daily calorie needs by activity level. Results update as you change inputs.

Units
ages 15 – 80
Gender
feet
inches
pounds
Settings

Results unit

BMR estimation formula

%
for Katch-McArdle

Result

Daily calorie needs based on activity level

Activity LevelCalories
  • Exercise: 15–30 minutes of elevated heart rate activity.
  • Intense exercise: 45–120 minutes of elevated heart rate activity.
  • Very intense exercise: 2+ hours of elevated heart rate activity.

BMR is estimated with the selected equation. Daily calorie needs are BMR multiplied by an activity factor. These are estimates only and are not medical advice.