BMR Calculator
HEALTHCalculate Basal Metabolic Rate calories burned at rest.
Enter your details and click Calculate
📖 How to Use BMR Calculator
1
Enter your gender
BMR formulas use gender as a factor in baseline metabolism.
2
Enter age, height, and weight
These are the four inputs for the Mifflin-St Jeor equation (the most accurate standard formula).
3
View your BMR
BMR is the calories your body burns at complete rest to maintain basic functions.
💡 Examples
Average male
INPUT
Male · 30 years · 175 cm · 75 kg→
OUTPUT
BMR: ~1,780 calories/dayAverage female
INPUT
Female · 28 years · 165 cm · 60 kg→
OUTPUT
BMR: ~1,432 calories/day🚀 Pro Tips
✓Multiply your BMR by an activity factor (1.2–1.9) to get TDEE — your total daily calorie needs.
✓BMR decreases with age — roughly 1–2% per decade after age 20.
✓Building muscle mass increases BMR because muscle burns more calories than fat at rest.
✓Crash diets can lower BMR — severe calorie restriction triggers "metabolic adaptation".