Independent shoe size guide
Convert shoe sizes between US, UK, EU and CM by foot length, with brand-specific fit notes and transparent sources.
Technical reference; manufacturer labels may differ. ISO 19407:2023 §4.2 · Source checked: 2026-09-05. Published size chart
| Foot length (mm) | US Men | US Women | UK | EU | CM |
|---|---|---|---|---|---|
| 240 | 6.5 | 7.5 | 5.5 | 38 | 24 |
| 250 | 7.5 | 8.5 | 6.5 | 39.5 | 25 |
| 260 | 8.5 | 9.5 | 7.5 | 41 | 26 |
| 270 | 10 | 11 | 9 | 42.5 | 27 |
| 280 | 11 | 12 | 10 | 44 | 28 |
| 290 | 12 | 13 | 11 | 45.5 | 29 |
Use the longer measured foot. Each result belongs to its own manufacturer chart and market. Size labels and measured foot length are different quantities. A chart does not establish the fit of every model.
Example — enter your measurement to update
Applies to: Men and women footwear chart · Source market: US
Two neighbouring references; no manufacturer size choice established
Official source · Source checked:
Applies to: Men's footwear · Source market: Singapore
This chart publishes labels only; foot length is unknown.
Official source · Source checked:
Applies to: Men's running footwear · Source market: US
This chart publishes labels only; foot length is unknown.
Official source · Source checked:
Applies to: Chuck Taylor All Star and Chuck 70 only · Source market: US
Exact published measurement
Official source · Source checked:
Applies to: Men's regular footwear chart · Source market: US
Two neighbouring references; no manufacturer size choice established
Official source · Source checked:
Applies to: Men's/unisex footwear · Source market: US
This chart publishes labels only; foot length is unknown.
Official source · Source checked:
Applies to: Men's footwear; women's labels refer to the same men's/unisex chart · Source market: US
Manufacturer recommends the larger row; lower reference also shown
Official source · Source checked:
Applies to: Men's shoes · Source market: GB / Europe
This chart publishes labels only; foot length is unknown.
Official source · Source checked:
Applies to: Unisex shoes; general US size guide · Source market: US
Two neighbouring references; no manufacturer size choice established
Official source · Source checked:
Applies to: Men's footwear · Source market: GB
Exact published measurement
Official source · Source checked:
Applies to: Unisex shoes · Source market: US
This chart publishes labels only; foot length is unknown.
Official source · Source checked:
Search published brand and model fit guides.
Use a product's own size chart — local pilot
The official Ultraboost 1.0 pages disagree by product code: JQ0826 advises half a size up, while JR1986 advises the usual size. Check the code on the pair you intend to buy before applying either suggestion. The shared Adidas chart supplies label correspondences; it cannot resolve this product-specific difference. These notes cover 1.0, not every Ultraboost generation.
For the A15958F canvas low top, Converse advises half a size below your usual size because this style runs large. Use the Chuck Taylor All Star / Chuck 70 chart below; this advice does not cover every Converse model. The chart has separate US men’s and women’s labels. At 245 mm it publishes two rows, so the measurement alone does not select one unique size.
Nike advises starting half a size below your usual Nike size for the Air Force 1. Its guide allows the usual size for wider feet and distinguishes upper materials and editions. Start with the Nike chart below, then check the exact product and width. Do not subtract another half size automatically from a foot-length chart result: these are two different reference methods.
Technical reference; manufacturer labels may differ. Size labels and measured foot length are different quantities. A chart does not establish the fit of every model.
Measure both feet · Technical reference; manufacturer labels may differ.