FitFormulas

BMR Calculator (Mifflin-St Jeor)

The modern standard BMR formula.

Private by design — everything is calculated on your device, nothing is stored
kg
cm

Try: Weight=70, Height=170, Age=30, Sex=male → 70 kg, 170 cm, 30, male, 1,618 kcal

How to use

Mifflin-St Jeor (1990) is the most widely recommended BMR equation, generally closer to measured resting metabolism than the older Harris-Benedict.

Formula

BMR = 10·w + 6.25·h − 5·a + s

FAQ

When would I use this specifically?

Any time you want the best general estimate of resting metabolism.

Does it need body fat?

No — it uses weight, height, age and sex only.

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