Shoe Size Converter
Compare shoe size systems in one chart. Choose both systems and a size to see all listed matches.
Reference: ISO 19407:2023 Table 2, adult UK-grading block only, not a guaranteed brand fit. US women uses that table offset; China and Korea use millimeters, Japan centimeters, and Australia the AU/UK men convention. Repeated length labels show all matching sizes. Mexico is omitted because the country name alone does not identify a consistent scale.
Size labels are not universal measurements. The chart uses the cited mappings and preserves multiple listed matches. A missing match is shown as —. Check the relevant brand or standard before selecting a product.
How to use this tool
- Choose the source and destination from the selectors.
- Select a source size. The result includes every listed match.
- Use Swap to reverse the selected systems, or Load example for a valid starting value.
Frequently asked questions
Can I reverse the conversion?
Yes. Swap systems, then choose a source size. A size can have several matches; the chart does not treat them as exact interchangeable measurements.
Why can a value show an error?
Only values present in the source chart are listed. Missing equivalents are not interpolated or guessed. After swapping a result with multiple matches, choose which source size you mean.
How precise is the result?
The published chart determines the matches. Brands and products can differ; see the notes and sources.
Sources
Last updated: 2026-10-30