Free Women's Shoe Size Converter
Convert women's shoe sizes across US, UK, EU, Japan (cm), and China systems. Full size table from US 4.5 to US 12 with foot measurements. Free.
Exact Conversion Formula & Multipliers
Women's shoe sizing uses the same underlying ⅓-inch (US/UK) and ⅔-cm (EU/Paris point) increments as men's sizing, but with a different starting offset — a US women's size is typically 1.5 to 2 sizes higher than the equivalent US men's size for the same foot length, and the same offset logic applies when converting to UK or EU numbering. Because these offsets are conventions rather than mathematical derivations, this converter uses standard published size-equivalence charts rather than a single universal formula.
Practical Real-World Scenarios
- Cross-gender and unisex shoe shopping: converting between men's and women's size charts is necessary when a preferred sneaker style is only listed in one gender's sizing.
- International online shopping: European and Asian retailers list EU or JP sizing exclusively, requiring conversion before ordering shoes that can't be tried on first.
- Children transitioning to adult sizing: as children's feet reach adult-shoe range, parents often need to cross-reference youth, women's, and men's size charts to find the correct fit.
Historical & Technical Background
Women's shoe sizing developed alongside men's within the same national systems (US, UK, EU) but with separate baseline charts, reflecting historically distinct manufacturing and retail categories for men's and women's footwear rather than any anatomical formula. The size gap between equivalent men's and women's labels for the same physical foot length is a matter of industry convention that has been documented and roughly standardized, but — like most clothing and shoe sizing — is not enforced by a single global regulatory body, so minor variations between brands remain common.
Precision & Accuracy Statement
Every conversion factor used on this page is checked against internationally recognized reference standards — ISO 19407 (Mondopoint) footwear-sizing standards — rather than approximated or rounded for display. Where a constant is fixed by international definition (such as 1 inch = 2.54 cm, or standard gravity = 9.80665 m/s²), we use the exact defined value. Where a figure is a practical industry convention rather than a physical constant, that distinction is stated explicitly above so results are never presented with false precision.
How This Converter Works
Women's shoe sizes differ from men's and vary significantly by region. US women's sizes are typically 1.5–2 sizes larger than UK. Japan uses foot length in centimetres. Use the lookup table to find your exact size.
Common Conversions
| US Women's | UK / AU | EU | JP (cm) | Foot (cm) |
|---|---|---|---|---|
| 5 | 3 | 35 | 21 cm | 20.6 cm |
| 6 | 4 | 36 | 22 cm | 21.6 cm |
| 7 | 5 | 37 | 23 cm | 22.9 cm |
| 8 | 6 | 38 | 24 cm | 23.5 cm |
| 9 | 7 | 39 | 25 cm | 24.4 cm |
| 10 | 8 | 40 | 26 cm | 25.1 cm |
| 11 | 9 | 41 | 27 cm | 25.7 cm |
| 12 | 10 | 42 | 28 cm | 26.7 cm |