🔥 BMR Calculator
Calculate your basal metabolic rate
How BMR Is Calculated
Formula
Men: 10×weight(kg) + 6.25×height(cm) − 5×age − 161 + 5 | Women: same − 161
- 1Enter your weight, height, age, and gender.
- 2The Mifflin-St Jeor equation is applied.
- 3For men: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age + 5.
- 4For women: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age − 161.
- 5Your BMR in calories per day is displayed, along with TDEE estimates for various activity levels.
About BMR Calculator
Calculate your Basal Metabolic Rate to find out how many calories your body burns at rest. Uses the Mifflin-St Jeor equation, widely considered the most accurate formula.
Frequently Asked Questions
What is the difference between BMR and TDEE?
BMR is the calories your body burns at complete rest just to maintain basic functions. TDEE (Total Daily Energy Expenditure) includes BMR plus calories burned through daily activity and exercise.
Why is the Mifflin-St Jeor equation used?
Studies show the Mifflin-St Jeor equation is the most accurate BMR formula for most people, outperforming older equations like Harris-Benedict. It was developed in 1990 using modern data.
Does BMR change with age?
Yes. BMR typically decreases with age because muscle mass tends to decline. This is one reason maintaining muscle through exercise is important for metabolism.