Body Frame Size Calculator
Find your body frame size from height and wrist.
Small, medium, or large frame
Body frame size — small, medium, or large — helps interpret ideal-weight ranges, since a bigger frame carries more weight naturally. A simple ratio of height to wrist circumference estimates it.
Divide your height by your wrist circumference and compare to reference ranges. A 175 cm person with a 17 cm wrist has a medium frame by the common thresholds.
Useful and private
The calculation runs in your browser, so nothing you enter is uploaded.
Frequently Asked Questions
How is frame size found?
From the ratio of your height to your wrist circumference, compared against reference ranges for each sex.
Why does frame size matter?
It puts ideal-weight ranges in context — a larger frame naturally carries more weight at the same height.
How do I measure my wrist?
Wrap a tape around the smallest part of your wrist, below the wrist bone, and read the circumference.
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