Science-Backed

BMR Calculator

Your Basal Metabolic Rate — the calories your body burns at complete rest. Calculated using the Mifflin-St Jeor equation.

cm
kg

Related Calculators

📊

TDEE

Daily calories

📉

Deficit

Weight loss calories

❤️

BMI

Body Mass Index

Find Your Calorie Target

Now that you know your BMR, calculate your TDEE to find the right calorie target for your goals.

Calculate TDEE →

BMR calculated using the Mifflin-St Jeor equation. For health advice, consult a healthcare professional.

Frequently Asked Questions

What is BMR?
BMR (Basal Metabolic Rate) is the number of calories your body needs to perform basic life-sustaining functions while at rest, such as breathing, circulation, and cell production. It accounts for about 60-75% of your total daily calorie expenditure.
What is the Mifflin-St Jeor equation?
The Mifflin-St Jeor equation is considered the most accurate BMR formula by the Academy of Nutrition and Dietetics. For men: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age(y) + 5. For women: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age(y) − 161.
How is BMR different from TDEE?
BMR is the calories you burn at rest, while TDEE (Total Daily Energy Expenditure) includes BMR plus your activity level. TDEE = BMR × activity multiplier. Your TDEE is always higher than your BMR unless you are completely bedridden.