BMR Calculator
Estimates the calories your body burns at rest using the Mifflin-St Jeor equation, with the revised Harris-Benedict result for comparison. A daily calorie needs table scales your BMR across five activity levels.
TheCalculators — BMR Calculator
Printed thecalculators.com
BMR
1,605 Calories/day
Mifflin-St Jeor · ≈ 66.9 Calories/hour at rest
- Mifflin-St Jeor BMR
- 1,605 Cal/day
- Harris-Benedict BMR
- 1,614 Cal/day
- Difference between equations
- 9 Cal/day
- Per hour
- 66.9 Cal/hr
- Profile
- Male · 25 yr · 60.0 kg · 180.0 cm
Daily calorie needs based on activity level
Exercise: 15-30 min of elevated heart rate · Intense: 45-120 min · Very intense: 2+ hours.
Formula-based BMR is a population estimate; calorimetry devices are more accurate. Estimates for informational purposes only — not medical advice.
Most useful next
Formula
Mifflin-St Jeor: BMR = 10W + 6.25H − 5A + 5 (men) / − 161 (women) · Harris-Benedict (rev. 1984): BMR = 13.397W + 4.799H − 5.677A + 88.362 (men) / 9.247W + 3.098H − 4.330A + 447.593 (women)
- • W = weight (kg), H = height (cm), A = age.
- • Mifflin-St Jeor is considered the most accurate general equation.
- • Multiply BMR by an activity factor (1.2-1.9) for total daily calorie needs.
Pro tips
- • Muscle mass raises BMR — strength training increases resting energy use over time.
- • Starvation dieting can reduce BMR by up to 30% as the body enters "power-saving" mode.
FAQ
Related Calculators
More Health tools you might need.
Calorie Calculator
Daily calorie targets to lose, maintain or gain weight based on your TDEE.
CalculateTdee Calculator
Total daily energy expenditure from Mifflin-St Jeor BMR, plus goal calories for cut, maintain or bulk.
CalculateMacro Calculator
Daily protein, carb and fat grams with donut chart and per-meal breakdown.
CalculateBody Fat Calculator
Estimate body fat % with the U.S. Navy tape method plus the BMI-based fallback.
Calculate