How to Use the Calorie Calculator

Fill in the fields above and click calculate. All calculations run instantly in your browser — no data is sent anywhere.

Frequently Asked Questions

What is TDEE?

Total Daily Energy Expenditure is the total calories your body burns daily including exercise, calculated from BMR multiplied by your activity factor.

What formula is used?

The Mifflin-St Jeor equation — the most accurate BMR formula. Male: (10×kg)+(6.25×cm)−(5×age)+5. Female: same minus 161.

How many calories to lose weight?

A deficit of 500 cal/day below your TDEE typically results in ~1 lb loss per week. The calculator shows this target automatically.