BMI for women and men: what is different
A common question is whether BMI works differently for women and men. The short answer: the formula and the adult categories are identical, but what the number means underneath is not.
Same number, different bodies
At the same BMI, women generally carry more body fat than men, and men carry more muscle. So two people, one woman and one man, both at a BMI of 24 can have noticeably different body fat percentages. BMI does not see that difference at all.
This is one of the clearest reasons not to read BMI in isolation. The number is the same, but the composition behind it is not.
What to do with that
For both women and men, the fix is the same: read BMI alongside body fat percentage and waist-to-height ratio. Those measures account for the fat you actually carry, so they tell you far more than the category alone.
- Women: see the BMI calculator for women.
- Men: see the BMI calculator for men.
BMI is a screen, not a diagnosis. Use it as one input, then look at composition for the rest.
Get the fuller picture
The BMI calculator shows your BMI together with body fat, waist-to-height and FFMI, so you see the number and what it misses side by side.
Track your body composition
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