← Back to tools
Fitness & Health
BMR Calculator
Calculate your daily resting calorie burn with the Mifflin-St Jeor formula.
How the BMR Calculator Works
This calculator estimates your Basal Metabolic Rate (BMR) — the number of calories your body burns to perform basic life-sustaining functions (like breathing, circulation, and cell production) while at rest.
Formula Used
BMR (Male) = 10 × weight (kg) + 6.25 × height (cm) − 5 × age (years) + 5
BMR (Female) = 10 × weight (kg) + 6.25 × height (cm) − 5 × age (years) − 161
- weight
- — your body weight in kilograms
- height
- — your height in centimetres
- age
- — your current age in years
Example Calculation
For a 30-year-old female weighing 60 kg and 165 cm tall: BMR = 10 × 60 + 6.25 × 165 − 5 × 30 − 161 = 600 + 1031.25 − 150 − 161 = 1,320 kcal/day. This is her resting energy cost.