US Women 4 in US Men, US Women, UK, EU, CM — shoe size conversion
US Women 4. Size labels and measured foot length are different quantities. A chart does not establish the fit of every model.
Published size chart
Nike: Published size chart
Applies to: Women's footwear; cross-labels in Nike's women's chart. Source market: US.
Size labels and measured foot length are different quantities. A chart does not establish the fit of every model.
Applies to
- CM / JP is a box label, not measured foot length.
- US kids cross-labels apply only to the published 2Y–7Y rows; they do not establish equivalent shoe construction or fit.
- Foot length is absent in the source for US women 17.5–22.5 and stays unknown.
- Nike recommends the larger listed size between foot measurements; measure both feet and use the longer measurement.
| US men | Foot length (mm) | US women | UK | EU | CM / JP |
|---|---|---|---|---|---|
| 2.5 | 212 | 4 | 1.5 | 34.5 | 21 |
Official source · Size Chart → US - Women, US - Men, US - Kids, UK, CM / JP, EU; Metric → Foot Length (cm). Public chart payload foot_length_cm in sizeCharts.data. · Source checked: .
Reebok: Published size chart
Applies to: Unisex shoes; general US size guide. Source market: US.
Size labels and measured foot length are different quantities. A chart does not establish the fit of every model.
Applies to
- UK/EU/CM labels are not supplied by this general chart and are left unknown.
- The F45 chart is a different scope and is not silently substituted for this chart.
| US men | Foot length (mm) | US women |
|---|---|---|
| 2.5 | 208.28 | 4 |
Official source · Unisex Shoes Size Guide → U.S. Men / U.S. Women / Heel-Toe Measurement (in) · Source checked: .
Technical reference; manufacturer labels may differ.
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 |
|---|---|---|---|---|---|
| 207.76 | 2.5 | 3.5 | 1.5 | 33 | 21 |
| 212 | 3 | 4 | 2 | 34 | 21 |
| 216.24 | 3.5 | 4.5 | 2.5 | 34.5 | 21.5 |