BMR Calculator
Estimate basal metabolic rate with the Mifflin–St Jeor equation from reference sex, age, weight, and height.
How to use
- Enter reference sex, age 14–120, weight 20–400 kg, and height 100–250 cm.
- Calculate the estimated daily BMR.
Capabilities and scope
The current runner uses +5 for male reference sex and −161 for female, returning kcal/day.
How it works
BMR=10×kg+6.25×cm−5×age+(male 5/female −161).
Example
A 30-year-old male reference at 70 kg and 175 cm gives about 1,648.75 kcal/day.
Interpretation
The runner rejects values outside its stated age, weight, and height ranges.
Useful for
- Use BMR as a starting point for energy estimates
- Inspect the basal component before estimating TDEE
Before you use it
- Actual metabolism varies and this estimate does not replace individualized medical or nutrition advice.
Standards and references
Frequently asked questions
Is BMR a daily calorie intake recommendation?
No. BMR estimates resting energy expenditure and excludes ordinary activity.