Convert shoe sizes between US Men's, US Women's, UK, EU, and foot length (cm).
| US Men | US Women | UK | EU | CM (foot) |
|---|---|---|---|---|
| 9 | 10.5 | 8.5 | 42 | 26 |
| 9.5 | 11 | 9 | 42.5 | 26.3 |
| 10 | 11.5 | 9.5 | 43 | 26.7 |
| 10.5 | 12 | 10 | 43.5 | 27 |
| 11 | 12.5 | 10.5 | 44 | 27.3 |
| US Men | US Women | UK | EU | CM (foot) |
|---|---|---|---|---|
| 3 | 4.5 | 2.5 | 35 | 21.6 |
| 3.5 | 5 | 3 | 35.5 | 22.2 |
| 4 | 5.5 | 3.5 | 36 | 22.5 |
| 4.5 | 6 | 4 | 36.5 | 22.9 |
| 5 | 6.5 | 4.5 | 37 | 23.5 |
| 5.5 | 7 | 5 | 37.5 | 23.8 |
| 6 | 7.5 | 5.5 | 38 | 24.1 |
| 6.5 | 8 | 6 | 38.5 | 24.4 |
| 7 | 8.5 | 6.5 | 39 | 24.8 |
| 7.5 | 9 | 7 | 40 | 25.1 |
| 8 | 9.5 | 7.5 | 41 | 25.4 |
| 8.5 | 10 | 8 | 41.5 | 25.7 |
| 9 | 10.5 | 8.5 | 42 | 26 |
| 9.5 | 11 | 9 | 42.5 | 26.3 |
| 10 | 11.5 | 9.5 | 43 | 26.7 |
| 10.5 | 12 | 10 | 43.5 | 27 |
| 11 | 12.5 | 10.5 | 44 | 27.3 |
| 11.5 | 13 | 11 | 44.5 | 27.6 |
| 12 | 13.5 | 11.5 | 45 | 27.9 |
| 12.5 | 14 | 12 | 45.5 | 28.3 |
| 13 | 14.5 | 12.5 | 46 | 28.6 |
| 14 | 15.5 | 13.5 | 47 | 29.2 |
| 15 | 16.5 | 14.5 | 48 | 29.8 |
You have a pair of UK size 9 boots on order from a shop that lists only EU sizes, or a US women's 10 you want to match to a men's last, and a wrong guess means a return label. This page finds the matching row in one chart and shows all five measures together. The result is only as exact as that chart, so it helps to know how the lookup works and where it snaps to the nearest row.
This is a table lookup, not an equation. The page holds 23 rows, from US men's 3 to 15, and compares your number with the column you chose using the smallest absolute difference. It then returns the whole row. The table itself follows two fixed relationships: US Women = US Men + 1.5, and UK = US Men − 0.5. EU sizes step by 0.5 most of the time but by 1 in four places, and the foot-length column rises by 0.3 to 0.6 cm per row.
What changes if you pick a different system for the same number? Entering 10 as US Men returns the row 10 / 11.5 / 9.5 / 43 / 26.7 cm. Entering 10 as UK returns US Men 10.5, US Women 12, EU 43.5 and 27.0 cm. Entering 10 as US Women lands on US Men 8.5, EU 41.5 and 25.7 cm. The same digit can mean a difference of nearly 1.5 US sizes depending on the label, which is why the From System menu comes first.
What changes if the number falls between rows? The nearest row wins, and a tie goes to the smaller row. A foot length of 26.5 cm is 0.2 from both 26.3 and 26.7, so it returns the 26.3 row (US Men 9.5, EU 42.5). A US men's 8.25 returns 8, and 13.5 returns 13 because the chart skips from 13 to 14. A value past either end snaps to the last row: typing US Men 20 returns the size 15 row, not an extrapolation.
Worked example: you have UK 9.5. The nearest value in the UK column is 9.5 exactly, so the page returns US Men 10, US Women 11.5, EU 43 and 26.7 cm. Check it with the offsets: 9.5 + 0.5 = 10 for men, and 10 + 1.5 = 11.5 for women. The EU and centimetre values come from the table, not from a formula.
The page labels it CM (foot), meaning foot length, and the shoe interior is longer. Fitters usually suggest leaving about a thumb's width, roughly 1 cm, beyond your longest toe, so measure your foot and add room rather than buying the exact size.
In this chart EU sizes step by 0.5 for most rows, but US Men 7 to 7.5 to 8 move EU 39, 40, 41, and 13 to 14 to 15 also jump by one. Real brands handle EU half sizes differently, and many sell whole EU sizes only, so expect to round.
No. The chart starts at US Men 3 (EU 35, 21.6 cm) and ends at 15. Smaller entries snap to the first row, so a child's size 1 is not converted properly. Use a dedicated youth chart.
The page uses one average chart for every brand. Lasts differ between makers and between styles within a maker, and width is not covered. A running shoe from one brand can fit a full size apart from a boot from another.
Yes, but it is not interpolated. The page returns the single closest row, so 8.25 becomes size 8, and the outputs are always the table's own values. Treat decimals as a way to find the nearest listed size.