Calorie Calculator
Estimate your daily calorie needs (BMR and TDEE) based on age, height, weight, and activity level.
Uses the Mifflin-St Jeor equation, a widely-used estimate — individual metabolism varies, so treat this as a starting point to adjust from, not an exact number.
Overview
Estimates how many calories your body needs per day to maintain, lose, or gain weight, based on the widely-used Mifflin-St Jeor equation.
- Shows BMR, maintenance calories, and loss/gain targets together
- Five activity level options
- Instant results as you adjust any input
How to use it
- 1Enter your age, height, and weight
- 2Choose your activity level
- 3Read your estimated daily calorie needs
Frequently asked questions
What's the difference between BMR and TDEE?
BMR is the calories your body burns at complete rest just to function. TDEE adds your activity level on top of that, giving a more realistic estimate of total daily calories burned.
How accurate is the 500-calorie rule for weight loss?
A 500-calorie daily deficit is a commonly cited rule of thumb for roughly 1 pound of weight loss per week, though actual results vary by individual and tend to slow over time.