BMR Calculator

Calculate your basal metabolic rate, the calories your body burns at complete rest, using the trusted Mifflin-St Jeor equation.

Calculate your basal metabolic rate, the calories your body burns at complete rest, using the Mifflin-St Jeor equation. Enter your age, sex, height and weight to see your resting calorie burn, the starting point for any calorie or weight-loss plan.

Read the guide: What Is BMR and Why It's the Base of Every Calorie Plan

About you

Units
Sex

Basal metabolic rate

1,718 cal

Calories your body burns at rest each day

Per hour
72 cal
Method
Mifflin-St Jeor

BMR is the energy you'd burn at complete rest. Add activity with the TDEE calculator for daily needs. Informational only, not medical advice.

How it works

  1. 1

    Enter your details

    Add your sex, age, height and weight.

  2. 2

    Pick your units

    Switch between metric and imperial as needed.

  3. 3

    See your BMR

    View the calories your body burns at rest each day.

Instant & 100% private — nothing is uploaded

Every calculation runs locally in your browser. The measurements, dates and details you enter stay on your own device and are never sent to a server — nothing is stored, logged or shared.

Frequently asked questions

What is BMR?
Basal metabolic rate is the energy your body uses just to keep you alive at rest: breathing, circulation, cell repair. It is the floor of your daily calorie needs.
How is BMR different from TDEE?
BMR is calories burned at rest. TDEE adds the calories you burn through daily activity and exercise. Use the TDEE calculator for your full daily needs.
Which BMR formula is most accurate?
The Mifflin-St Jeor equation used here is widely regarded as the most reliable for most healthy adults, more so than the older Harris-Benedict formula. Every BMR figure is an estimate, since real metabolism varies from person to person.

Important

These calculators give general, informational estimates and are not medical advice, diagnosis or treatment. Everyone is different — for decisions about your health, talk to a qualified clinician.

More tools

BMI CalculatorBody mass index, your category and a healthy weight range.Body Fat CalculatorBody fat percentage from the US Navy measurement method.Ideal Weight CalculatorA healthy target weight range for your height.Lean Body Mass CalculatorLean (fat-free) mass and fat mass from height and weight.Waist-to-Hip Ratio CalculatorWaist-to-hip ratio and your WHO health-risk band.TDEE CalculatorTotal daily calories burned, from BMR and activity.

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