Calorie Calculator (BMR & TDEE)
Estimate the calories your body needs each day.
Based on the Mifflin-St Jeor equation. "Lose" and "gain" assume a ~500 kcal daily deficit or surplus (about 0.45 kg / 1 lb per week).
About the Calorie Calculator
Free calorie calculator. Estimate your BMR and daily calorie needs (TDEE) from your age, sex, height, weight and activity level — plus goals for losing or gaining weight.
Everything is calculated instantly in your browser — nothing you type is uploaded or stored. Bookmark Calcooly for the next time you need it.
How to use the Calorie Calculator
- 1Choose units and enter your age, sex, height and weight.
- 2Pick your activity level.
- 3See your maintenance calories plus targets to lose or gain weight.
Frequently asked questions
What are maintenance calories (TDEE)?+
It's roughly how many calories you burn per day at your activity level, so eating that amount keeps your weight stable.
Which formula is used?+
The Mifflin-St Jeor equation for BMR, multiplied by an activity factor to estimate daily needs.
Is the result exact?+
It's a reliable estimate for general information. For important financial, medical or legal decisions, check with a qualified professional.