Ponderal Index Calculator
Weight ÷ height³.
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Body
Body Frame Size Calculator
Find your frame size from height and wrist circumference.
Body frame size
—
Small / medium / large.
| Height ÷ wrist | — |
|---|---|
| Height | — |
| Wrist | — |
| — |
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Enter your figures above to see the step-by-step working.
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How the Body Frame Size Calculator Works
Body frame size — small, medium or large — is estimated from the ratio of your height to your wrist circumference. A larger ratio means a finer frame. For women, a ratio above 11 is a small frame, 10.1–11 medium, and below 10.1 large; men’s cutoffs are slightly lower. Measure the wrist just below the bump toward the hand.
Frame size helps interpret ideal-weight ranges: two people of the same height can have healthy weights several pounds apart depending on their frame.
frame = height ÷ wrist circumference (banded by sex)
Frequently Asked Questions
How do I find my body frame size?
Divide your height by your wrist circumference and compare to the small/medium/large bands for your sex.
Why does frame size matter?
It adjusts ideal-weight targets — a larger frame carries more healthy weight at the same height.
Where do I measure my wrist?
Just below the wrist bone, toward the hand, at the narrowest point.
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