Foot Length Measurements
This size guide is based on heel-to-toe foot length. Measure your foot from the back of your heel to the tip of your longest toe, then use the table below to find your corresponding size.
This size guide is based on heel-to-toe foot length. Measure your foot from the back of your heel to the tip of your longest toe, then use the table below to find your corresponding size.
Y-3 adidas Footwear Size Guide
| UK | Heel-to-Toe (cm) | EU | US Men | US Women |
|---|---|---|---|---|
| 3.5 | 22.1 | 36 | 4 | 5 |
| 4 | 22.5 | 36 2/3 | 4.5 | 5.5 |
| 4.5 | 22.9 | 37 1/3 | 5 | 6 |
| 5 | 23.3 | 38 | 5.5 | 6.5 |
| 5.5 | 23.8 | 38 2/3 | 6 | 7 |
| 6 | 24.2 | 39 1/3 | 6.5 | 7.5 |
| 6.5 | 24.6 | 40 | 7 | 8 |
| 7 | 25.0 | 40 2/3 | 7.5 | 8.5 |
| 7.5 | 25.5 | 41 1/3 | 8 | 9 |
| 8 | 25.9 | 42 | 8.5 | 9.5 |
| 8.5 | 26.3 | 42 2/3 | 9 | 10 |
| 9 | 26.7 | 43 1/3 | 9.5 | 10.5 |
| 9.5 | 27.1 | 44 | 10 | 11 |
| 10 | 27.6 | 44 2/3 | 10.5 | 11.5 |
| 10.5 | 28.0 | 45 1/3 | 11 | 12 |
| 11 | 28.4 | 46 | 11.5 | 12.5 |
| 11.5 | 28.8 | 46 2/3 | 12 | 13 |
| 12 | 29.3 | 47 1/3 | 12.5 | 13.5 |
| 12.5 | 29.7 | 48 | 13 | 14 |
| 13 | 30.1 | 48 2/3 | 13.5 | 14.5 |
Swipe to view all sizes →
In between sizes?
For a tight fit, go one size down.
For a loose fit, go one size up.
How to Measure
Follow these easy steps to get the right size. For the best fit, measure your feet at the end of the day.
1. Heel-to-Toe Length: Measure the distance from the tip of your longest toe to the outermost part of your heel.