BMR Calculator
Estimate your basal metabolic rate using the Mifflin-St Jeor equation, then see an estimated daily calorie need based on your activity level.
Estimated BMR0 kcal/day
Estimated Maintenance Calories0 kcal/day
EquationMifflin-St Jeor
How to Use the BMR Calculator
Enter your age, sex, height and weight to estimate your basal metabolic rate and maintenance calories.
Practical Example
A 30-year-old person weighing 70 kg at 175 cm receives a formula-based resting calorie estimate that can be used as a starting point for daily energy planning.
Factors That Affect the Result
Age, body size, lean mass, genetics, hormones, activity and health status can all affect real energy needs, so BMR is an estimate rather than a direct measurement.
Frequently Asked Questions
Is BMR the same as daily calorie needs?
No. Daily needs also include activity and digestion.
Which formula is used?
The calculator uses the Mifflin-St Jeor equation.
Is the result medically exact?
No. It is intended for general planning and education.