Health
BMR Calculator
Calculate basal metabolic rate using the Mifflin-St Jeor equation and keep an eye on daily resting energy needs.
Mifflin-St Jeor BMR with quick kilojoule and per-hour breakdowns.
Mifflin-St Jeor BMR
BMR = 10w + 6.25h − 5a + s
Weight (w) and height (h) are metric, age (a) is in years, and s is +5 for males or −161 for females. The result estimates the calories your body burns at rest each day.
How to use
- Select gender so the correct constant is applied.
- Enter current age, weight (kg), and height (cm).
- Review the BMR value to plan maintenance or macro targets.
Example
Input: Female, Age = 28, Weight = 60 kg, Height = 165 cm
Output: BMR ≈ 1,351 kcal/day
FAQ & notes
Does BMR include workouts or steps?
No. BMR reflects resting energy only; multiply it by an activity multiplier to estimate total daily energy expenditure.
Can I enter pounds and inches?
Convert pounds to kilograms (÷ 2.2046) and inches to centimeters (× 2.54) before entering them to keep the formula precise.