BMR Calculator

Calculate your Basal Metabolic Rate.

Enter Your Details

Fill in the fields to calculate your BMR

Biological Sex

Age

Mifflin-St Jeor

Harris-Benedict

kcal/day

Daily Calorie Needs (TDEE)

Enter your details above to calculate your BMR.

Step-by-step Solution

About BMR

BMR (Basal Metabolic Rate) is the number of calories your body needs at rest to maintain basic functions like breathing and circulation.

TDEE (Total Daily Energy Expenditure) multiplies BMR by an activity factor to estimate real-world calorie needs.

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About This Calculator

Calculate your Basal Metabolic Rate.

Everything is worked out in your browser as you type, so your figures never leave your device.

Pro Tips

Results update as you type — change any field to see the effect immediately.

Check that every value uses the same unit before comparing results.

Use the copy button to paste the bmr figures into a note or spreadsheet.

Nothing is sent to a server, so you can use this with private figures.