UK 9 to US shoe size
UK 9 is US men's 9.5 or women's 11, a foot length of 27.1 cm. Convert any other size below, or see the full UK to US chart.
UK sizes near 9
| UK | US Men | US Women | Foot (cm) |
|---|---|---|---|
| 8 | 8.5 | 10 | 26.2 |
| 8.5 | 9 | 10.5 | 26.7 |
| 9 | 9.5 | 11 | 27.1 |
| 9.5 | 10 | 11.5 | 27.5 |
| 10 | 10.5 | 12 | 27.9 |
UK 9 and US men's 9.5 or women's 11 both correspond to a foot length of 27.1 cm, which is the one measurement that does not change between systems. If you know your foot length directly, you can confirm the size without converting at all.
For every other UK size, see the full UK to US shoe size chart, or measure your foot with how to measure shoe size.
Common questions
What is UK 9 in US shoe size?
UK 9 is US men's 9.5 or women's 11. Both sit on the same foot length of 27.1 cm.
Does UK 9 differ for men and women?
No. UK uses one number for both, so UK 9 is the same size for men and women. The equivalent US size covers both, shown as separate men's and women's numbers where US is US.
What if I am between two sizes?
Size up. A slightly long shoe is more comfortable than one that is too short, and you can adjust the fit with insoles or thicker socks.
Last reviewed and updated on July 2, 2026. Conversion tables are checked against published international sizing standards.