BMR Calculator
Basal Metabolic Rate (BMR) is the number of calories your body burns at rest.
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calories/day at complete rest
Mifflin-St Jeor
cal/day
Most accurate for modern populations
Harris-Benedict
cal/day
Classic equation (1919)
Daily Calorie Needs by Activity
Sedentary
Little or no exercise
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cal/day
Light
Exercise 1-3 days/week
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cal/day
Moderate
Exercise 3-5 days/week
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cal/day
Active
Exercise 6-7 days/week
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cal/day
Very Active
Hard exercise daily
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cal/day
What is BMR?
BMR represents the minimum calories your body needs to function at rest. Your actual daily calorie needs (TDEE) are higher based on activity level.
How BMR is Calculated
We use the Mifflin-St Jeor equation, considered the most accurate for modern populations.
"More accurate than Harris-Benedict for today's population."
The Formula
Men: BMR = (10 × weight kg) + (6.25 × height cm) − (5 × age) + 5
Women: BMR = (10 × weight kg) + (6.25 × height cm) − (5 × age) − 161
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