Calculyn

BMR Calculator

Estimate your basal metabolic rate — the calories your body burns at rest.

in
lb

Results update as you type.

Your BMR

1,727calories / day

Educational estimate — not medical advice.

Your BMR1,727

Health results are general estimates, not a diagnosis or a substitute for advice from a doctor or registered dietitian.

Was this calculator helpful?

How it works

BMR is the energy your body needs to keep you alive at complete rest. We use the Mifflin–St Jeor equation, considered one of the most accurate for most adults.

Formula

BMR = 10 × kg + 6.25 × cm − 5 × age + 5 (male) or − 161 (female)

Example

A 32-year-old man, 5′10″ (70 in) and 170 lb, has a BMR of about 1,750 calories per day.

Assumptions & limitations

  • Based on population formulas that may not fit athletes, pregnancy, children or medical conditions.

Frequently asked questions

Is BMR the same as calories I should eat?

No. Multiply BMR by an activity factor to get TDEE, your daily maintenance calories.