Is BMR the same as daily calorie needs?
No. BMR estimates energy at rest. Daily energy needs also depend on movement, exercise, and other factors.
Body & health
BMR calculator for resting energy needs.
Estimate the calories your body uses at rest with the inputs required by the Mifflin–St Jeor equation.
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How it works
Made for one clear task.
Basal metabolic rate is an estimate of the energy used by the body at rest before normal daily movement or exercise. This calculator uses height, weight, age, and the sex-specific coefficient in the published Mifflin–St Jeor equation.
- Uses the Mifflin–St Jeor BMR equation
- Shows an estimate in kilocalories per day
- Connects to TDEE when activity is relevant
Formula references
Compare BMI guidance with the CDC adult BMI guidance. BMR uses the published Mifflin–St Jeor equation; for personalized weight planning, see the NIH Body Weight Planner.
Common questions
BMR calculator for resting energy needs. FAQs
Why is age included?
Age is one of the variables in the BMR formula, along with height, weight, and the sex-specific coefficient.