How to use the BMR Calculator
Enter the age, height and weight and the result appears straight away. Everything runs in your browser, so nothing you type is uploaded.
The formula
Men: 10 × kg + 6.25 × cm − 5 × age + 5. Women: 10 × kg + 6.25 × cm − 5 × age − 161.
Examples
- 30-year-old man, 175 cm, 75 kg
BMR: 1,699 calories per day This is what your body burns at complete rest. Sedentary daily needs (×1.2): 2,039 calories
- 28-year-old woman, 165 cm, 62 kg
BMR: 1,350 calories per day This is what your body burns at complete rest. Sedentary daily needs (×1.2): 1,620 calories
- 45-year-old man, 180 cm, 90 kg
BMR: 1,805 calories per day This is what your body burns at complete rest. Sedentary daily needs (×1.2): 2,166 calories
Limitations and assumptions
General estimate for adults, not medical advice. Speak to a doctor or registered dietitian before making significant changes to diet, exercise or health routines.
Frequently asked questions
What is BMR?
The calories you burn each day doing nothing but staying alive.
Which BMR formula is most accurate?
Mifflin-St Jeor is widely regarded as one of the more reliable equations for the general population.
How do I turn BMR into daily calories?
Multiply by an activity factor to get TDEE. The TDEE calculator does this for you.
Should I eat below my BMR?
Generally not without medical supervision. Very low intakes are hard to sustain and may be unsafe.