Complete BMR Calculator
Calculate your Basal Metabolic Rate using all three major formulas and compare results
30 years
5 ft
8 in
160 lbs
15%
Optional: Required only for Katch-McArdle formula
Mifflin-St Jeor
BMR (Resting)
1,685 cal/day
TDEE (Total Daily)
2,022 cal/day
Most accurate for general population
Harris-Benedict
BMR (Resting)
1,712 cal/day
TDEE (Total Daily)
2,054 cal/day
Classic formula, slightly higher estimates
Katch-McArdle
BMR (Resting)
1,798 cal/day
TDEE (Total Daily)
2,158 cal/day
Most accurate for lean/athletic individuals
Formula Comparison
Average BMR: 1,732 cal/day
Range: 113 cal/day
Recommended: Mifflin-St Jeor
Mifflin-St Jeor (Recommended)
BMR = (10 × 73kg) + (6.25 × 173cm) - (5 × 30y) + 5 = 1,685 cal/day
Most accurate for modern populations, published in 1990
Harris-Benedict (Revised)
BMR = (13.397 × 73kg) + (4.799 × 173cm) - (5.677 × 30y) + 88.362 = 1,712 cal/day
Classic formula revised in 1984, tends to overestimate
Katch-McArdle
BMR = 370 + (21.6 × 62kg lean mass) = 1,798 cal/day
Based on lean body mass, most accurate for athletic individuals