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BMR (Basal Metabolic Rate) Calculator

Compute baseline calories burned at rest via Mifflin-St Jeor & Harris-Benedict.

Tool inputs stay in your browser · optional AI search sends your query

Good to know: Basal Metabolic Rate (BMR) represents the minimum number of calories your body needs to maintain vital organ functions at complete rest.

How to use it (step by step)

  1. 1Fill in the boxes: “Biological Sex”, “Age (years)”, “Weight (kg)”, “Height (cm)”. Example numbers are already there so you can see how it works; replace them with yours.
  2. 2The result updates instantly as you type (on a phone it is below the boxes).
  3. 3The bold line is the main answer. Tap Copy next to any value to copy it.

Words to know

Calories / BMR
Calories measure energy in food. BMR is the energy your body uses at rest; TDEE adds your daily activity.
Age / date difference
Counting the exact years, months and days between two dates, including leap years.

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