BMR
Calculator

Calculate your Basal Metabolic Rate using Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle formulas with activity level multipliers.

Input

Unit System
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Your BMR

1,699 cal/day

Mifflin-St Jeor

Your body burns approximately 1,699 calories per day at complete rest. This is your Basal Metabolic Rate.

Formula Comparison

FormulaBMR (cal/day)
Mifflin-St Jeor1,699
Harris-Benedict1,763

Enter body fat % to see Katch-McArdle results.

Daily Energy Expenditure (TDEE)

Activity LevelCalories/Day
Sedentary (little or no exercise)2,039
Lightly Active (exercise 1-3 days/week)2,336
Moderately Active (exercise 3-5 days/week)2,633
Very Active (exercise 6-7 days/week)2,931
Extra Active (intense exercise daily)3,228

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