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# Calculate Your Basale Metabolic Rate (FAO/WHO/UNU)

Last updated: Monday, May 01, 2023
Select a formula below
FAO/WHO/UNU
Harris-Benedict
Roza & Shizgal
Mifflin & St Jeor

The Basal Metabolic Rate (BMR) is an estimation of the amount of a person's energy expenditure while at rest, in a thermal neutral zone ($$21^\circ C$$ or $$69^\circ F$$) and in the absorptive state (normally happens after 12 hours of fasting).

BMR is a more accurate measure of your metabolism at complete rest, which is normally a bit lower than your RMR.

The FAO/WHO/UNU formula used here is based on the FAO/WHO/UNU procedures in adults published in 1985, which tends to overestimate the energy requirement for sedentary individuals.

The FAO/WHO/UNU formula for determining the BMR is defined as:
$$BMR$$ $$=$$ $$a$$ $$\times$$ $$weight$$ $$+$$ $$b$$
$$BMR$$: The basal metabolic rate
$$weight$$: The weight measured in kilogram
$$age$$: your age measured in years
The unit for BMR is: $$kilocalorie/day \text{ } (kcal/d)$$
Select your gender and the type of units below
Female (Metric)
Female (Imperial)
Male (Metric)
Male (Imperial)

## Female (Metric)

Use this calculator to determine the female basal metabolic rate using the FAO/WHO/UNU formula.
The weight measured in kilogram
$$weight$$
$$kilogram$$
$$age$$
$$years$$
Please note, that all calculators provided are for informational and educational purposes ONLY, and should NOT be taken as professional medical/dietary advice.

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