BMR Calculator
Calculate your Basal Metabolic Rate — the calories your body burns at complete rest.
yrs
cm
kg
Your BMR
1,680
calories/day at rest
The Mifflin-St Jeor Equation
Men: BMR = (10 × kg) + (6.25 × cm) − (5 × age) + 5
Women: BMR = (10 × kg) + (6.25 × cm) − (5 × age) − 161
Women: BMR = (10 × kg) + (6.25 × cm) − (5 × age) − 161
Disclaimer: Estimates only, not medical advice.
Frequently Asked Questions
What is BMR?
BMR (Basal Metabolic Rate) is the number of calories your body burns at complete rest to maintain basic life functions like breathing, circulation, and cell production.
What is the Mifflin-St Jeor equation?
It's the most accurate BMR formula for most people: Men: BMR = 10×kg + 6.25×cm − 5×age + 5. Women: BMR = 10×kg + 6.25×cm − 5×age − 161.
What's the difference between BMR and TDEE?
BMR is calories burned at rest. TDEE (Total Daily Energy Expenditure) multiplies BMR by an activity factor to estimate total daily calorie burn.
Is this BMR calculator accurate?
Mifflin-St Jeor is considered the most reliable BMR equation for the general population, but all estimates have a margin of error of ~5–10%.