BMR Calculator Basal Metabolic Rate
Estimate your Basal Metabolic Rate and daily calorie needs using the Mifflin-St Jeor equation.
Enter your age, sex, height, weight, and activity level to get an instant BMR and estimated daily calorie needs.
What BMR Tells You
BMR estimates the energy your body requires to maintain essential functions while at rest.
BMR Calculator
Calculate BMR and estimated daily calorie needs
Enter Your Information
Enter your details below to calculate your estimated BMR.
Examples use kilograms and centimeters.
BMR Result
Your estimated resting and daily calorie needs.
Estimated BMR
—
Enter your information to calculate your BMR.
Daily Needs
—
Activity
—
BMR is an estimate of energy used by the body at rest. Individual calorie needs can vary.
Estimated Basal Metabolic Rate
0
calories / day
Activity
Moderate
Estimated Daily Calorie Needs
0
Approximate maintenance calories based on your activity level.
Weight Loss
—
estimated / day
Maintenance
—
estimated / day
Weight Gain
—
estimated / day
Your Profile
Sex
—
Age
—
Weight
—
Height
—
BMR & Daily Calorie Activity Levels
Your estimated daily calorie needs change according to your activity level.
BMR Calculation Steps
See how your estimated BMR and daily calorie needs were calculated.
Mifflin-St Jeor Formula
Calculate Your BMR in 4 Steps
Enter a few details and get your estimated BMR and calorie needs.
Enter Age
Enter your age in years.
Enter Measurements
Provide your weight and height.
Select Activity
Choose your typical activity level.
Get Results
View your BMR and estimated daily calorie needs.
BMR Calculator Features
Health Information Disclaimer
BMR and calorie calculations are estimates, not medical advice or a diagnosis. Actual energy requirements can vary substantially between individuals. Do not use this calculator alone to make medical or nutritional decisions.
Frequently Asked Questions
What is BMR? +
BMR stands for Basal Metabolic Rate. It is an estimate of the energy your body uses to maintain basic functions while at rest.
Which BMR equation does this calculator use? +
This calculator uses the Mifflin-St Jeor equation, which estimates BMR from weight, height, age, and sex.
What is the difference between BMR and daily calorie needs? +
BMR estimates energy expenditure at rest. Daily calorie needs generally include additional energy used through physical activity and other daily functions.
Does a higher BMR mean I burn more calories? +
A higher estimated BMR indicates a greater estimated resting energy requirement, but total daily energy expenditure also depends on activity and other factors.
Can I use BMR as my exact calorie requirement? +
No. BMR is an estimate and does not represent everyone's exact calorie requirement. Individual needs vary.
Calculate Your BMR Today
Enter your information above to estimate your Basal Metabolic Rate and daily calorie needs.
Calculate BMR