BMR Calculator – Basal Metabolic Rate (Free & Instant)
Discover how many calories your body burns at rest. Uses the accurate Mifflin-St Jeor formula. 100% free · Nothing uploaded · Works instantly in your browser.
AdSense 728×90
Your Basal Metabolic Rate (BMR)
1,748
calories per day
This is the number of calories your body needs at complete rest
to keep your heart beating, lungs breathing, and organs functioning.
100% private – calculated instantly in your browser
Your Estimated Daily Calorie Needs (TDEE)
| Activity Level | Multiplier | Daily Calories |
| Sedentary (desk job, little exercise) | ×1.2 | 2,098 kcal |
| Lightly active (light exercise 1–3 days/week) | ×1.375 | 2,403 kcal |
| Moderately active (moderate exercise 3–5 days) | ×1.55 | 2,709 kcal |
| Very active (hard exercise 6–7 days) | ×1.725 | 3,015 kcal |
| Extremely active (athlete, physical job) | ×1.9 | 3,321 kcal |
How to Use the BMR Calculator
- Enter your age, gender, height and current weight
- Get your exact BMR using the gold-standard Mifflin-St Jeor equation
- Use the table below to estimate your total daily calorie needs (TDEE)