BMR Calculator
Calculate your Basal Metabolic Rate — the calories your body burns at rest using the Mifflin-St Jeor equation.
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Basal Metabolic Rate
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Weekly BMR
Recent Calculations
What Is BMR?
Basal Metabolic Rate (BMR) is the number of calories your body needs to maintain basic functions like breathing, circulation, and cell production while at complete rest.
Formula
Mifflin-St Jeor: Men: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age + 5
Women: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age − 161Example
A 30-year-old male, 5'10", 170 lbs has a BMR of approximately 1,741 calories per day.
Frequently Asked Questions
What's the difference between BMR and TDEE?
BMR is calories burned at rest. TDEE (Total Daily Energy Expenditure) includes BMR plus calories burned through activity and exercise.
Which BMR formula is most accurate?
The Mifflin-St Jeor equation is considered the most accurate for most people, validated across multiple studies.