Size conversion tool updates
(4 total)- 2026-04-01 — Updated title, software patch for fractional sizes.
- 2026-03-25 — Added 'Try our other tools' navigation cards.
- 2026-03-25 — Foot length to brand size convertor created.
- 2026-03-25 — Sizing database of 12 shoe brands added.
Foot Length Converter
Translate your foot length into the corresponding shoe size for a specific brand.
Try our other sizing tools.
This sizing tool converts your foot length (in centimeters or inches) into a specific shoe size across a dozen brands. To use this tool, select your foot length, and then choose the brand to find your size. If you want to convert your foot length into a specific size in a particular model or compare the fit of current running shoes, use our ‘foot length to model size’ convertor or ‘compare fit across models’ tool. These tools will not guarantee a perfect fit because of personal preferences and variances in foot shapes, but it will remove few layers of guesswork.
Place your larger foot on the ruler so that the longest tip of the foot lines up with the ruler markings. Record the CM measurement, with a +- 2 mm variance allowance. The heel should not be pressed hard against the wall; use a light touch. Enter the recorded CM value into our conversion tool.
We recommend getting a brand-name ruler (like Staedtler) from your neighborhood Staples for accurate measurements.
To find out your foot size (we recommend centimeters), place the flat end of a larger ruler against a wall. Wear your running socks, and place the foot over the scale. Add a margin of 2-3 mm, and find the next full or half CM size. In this example, the foot is placed at 27.7 CM marker, so the next full size is 28 CM. That’s the value that select in our tool. For accurate results, do not press your heel against the wall but maintain just the lightest contact. If your left or right foot is larger than the other, use the larger of the two to measure your size.
This tool converts your foot length (in cm or inches) into Men’s US, Women’s US, UK, EU/FR, and CM (JP) sizes of Adidas, Altra, Asics, Brooks, Hoka, Mizuno, New Balance, Nike, ON, Puma, Saucony, and Salomon.