Body Frame Size Calculator

This body frame size calculator tells you whether you have a small, medium or large frame from your height and the circumference of your wrist. Frame size is a simple way to describe the size of your skeleton, and it matters because two people of the same height can carry very different amounts of bone and muscle: a large frame naturally weighs more than a small one, so knowing your frame helps set a realistic healthy weight range rather than a single number that suits nobody. The calculator uses the height to wrist ratio method, which divides your height by your wrist circumference and compares the result against standard bands. A higher ratio means a slimmer, smaller frame for your height, while a lower ratio points to a larger frame. The bands are different for men and women because women tend to have finer wrists at the same height. Measure your wrist at its narrowest point, just below the wrist bone where a watch sits, and enter it in centimetres along with your height. The result gives you a quick, tape-measure estimate you can use to adjust ideal weight targets from our other tools. It is a rough guide to skeletal size only: it does not measure body fat, fitness or health, so read it alongside measures like BMI, waist size and body fat percentage.

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A height to wrist ratio of 10.6 places you in the medium frame range for women. Frame size is a rough guide used to fine-tune healthy weight ranges.

Frame size estimates skeletal size only; it does not measure body fat or health. Bands follow the standard height to wrist ratio method. Estimate only.