Basal metabolic rate (BMR) estimate
BMR is the energy used at complete rest over one day. This tool estimates it for an adult. It is an estimate, not a prescription.
General information, not medical advice. This result does not replace a doctor. If in doubt or if you have symptoms, see a health professional.
Result
1,320Estimated BMR (kcal per day)
- Mifflin-St Jeor (kcal per day)
- 1,320
- Revised Harris-Benedict (kcal per day)
- 1,384
Inputs
- Sex (for the formula)
- Woman
- Age
- 30
- Height
- 165
- Weight
- 60
- Formula
- Mifflin-St Jeor
How it is calculated
Mifflin-St Jeor: 10 × weight + 6.25 × height − 5 × age, then + 5 (man) or − 161 (woman).
Result
Estimated BMR (kcal per day)
- Mifflin-St Jeor (kcal per day)
- 1,320
- Revised Harris-Benedict (kcal per day)
- 1,384
How it is calculated
- Mifflin-St Jeor: 10 × weight + 6.25 × height − 5 × age, then + 5 (man) or − 161 (woman).
- Revised Harris-Benedict (1984), man: 88.362 + 13.397 × weight + 4.799 × height − 5.677 × age.
- Revised Harris-Benedict, woman: 447.593 + 9.247 × weight + 3.098 × height − 4.330 × age.
- Weight in kg, height in cm, age in years.
Example
Woman, 30, 165 cm, 60 kg (Mifflin): 600 + 1,031.25 − 150 − 161 = 1,320 kcal per day.
Good to know
- A population average: the real value can differ by 10% or more from one person to another.
- For adults aged 18 and over. Not suited to pregnancy or illness.
- For a real assessment, a doctor or dietitian can measure or adapt these numbers.
Sources
- Mifflin et al., Am J Clin Nutr, 1990
- Roza and Shizgal, Am J Clin Nutr, 1984
Frequently asked questions
What is this tool used for?
BMR is the energy used at complete rest over one day. This tool estimates it for an adult. It is an estimate, not a prescription.
How is the result calculated?
Mifflin-St Jeor: 10 × weight + 6.25 × height − 5 × age, then + 5 (man) or − 161 (woman).
What should I check before using the result?
A population average: the real value can differ by 10% or more from one person to another.