justyourcalculatorBMR Calculator
The calories your body burns at complete rest.
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BMR Calculator
Basal metabolic rate by three formulas
Basal metabolic rate
1,692 Calories / day
Mifflin-St Jeor
- Mifflin-St Jeor
- 1,692 Calories
- Revised Harris-Benedict
- 1,744 Calories
BMR is what you'd burn lying still all day. Your real daily need is higher; see the table or the TDEE Calculator. Estimates are within about 10% for most adults.
How it was calculated
- Mifflin-St Jeor: 10 × kg + 6.25 × cm - 5 × age + 5 (men) or - 161 (women)
- = 1,692 Calories a day
| Activity | Calories / day |
|---|---|
| Sedentary: little or no exercise | 2,030 Calories |
| Light: exercise 1-3x/week | 2,326 Calories |
| Moderate: exercise 4-5x/week | 2,479 Calories |
| Active: daily, or hard 3-4x/week | 2,623 Calories |
| Very active: intense 6-7x/week | 2,919 Calories |
| Extra active: physical job | 3,215 Calories |
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How the bmr calculator works
Basal metabolic rate is the energy your body uses to breathe, circulate blood and keep warm at complete rest. It's usually 60 to 70% of the calories you burn in a day.
Mifflin-St Jeor (1990): 10 × weight (kg) + 6.25 × height (cm) - 5 × age + 5 for men, or - 161 for women. The revised Harris-Benedict equation (Roza and Shizgal, 1984) is an older alternative. Katch-McArdle, 370 + 21.6 × lean body mass (kg), ignores sex and age and works best if you know your body fat.
Using and checking your result
Published by JustYourCalculator. Check the units and assumptions above, and compare a known example before relying on the output. Calculations use browser arithmetic and may round displayed values.
This tool provides an estimate, not a diagnosis, treatment plan or individualized medical advice. Population formulas may not fit children, pregnancy, athletes or people with health conditions. Discuss health decisions with a qualified clinician.
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