Health

Body Frame Size

Determine body frame size (small, medium, large) from wrist circumference and height

Last reviewed: How we build & verify

Adults only. Enter wrist circumference in cm (8-30) and height in cm (100-250), measured with the same units. Frame size is a rough classification (height/wrist ratio, Grant 1981) used to interpret ideal-weight ranges; it is not a diagnosis.

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Frequently Asked Questions

No. Body Frame Size is free, with no signup required, and nothing you enter leaves your browser.

Body Frame Size is built on published formulas and reference ranges from established health sources. We revisit it periodically as guidance evolves; the "Last reviewed" date above shows when that last happened. If something looks wrong, tell us with the feedback button in the bottom-right corner.

Body Frame Size | ExaCalc