On Cloud Shoes Size Guide – UK
Match your foot size to the correct fit before you order. Charts below cover men's, women's and kids' sizing in UK, EU, US and centimetres.
Quick tip: On Cloud styles run true to size for most people. If you're between two sizes, or plan on wearing thicker socks for running, we recommend sizing up by half a size.
Men's Size Chart
| UK | EU | US | Foot Length (cm) |
|---|---|---|---|
| 6 | 39.5 | 7 | 24.5 |
| 6.5 | 40 | 7.5 | 25.0 |
| 7 | 41 | 8 | 25.5 |
| 7.5 | 41.5 | 8.5 | 26.0 |
| 8 | 42 | 9 | 26.5 |
| 8.5 | 43 | 9.5 | 27.0 |
| 9 | 43.5 | 10 | 27.5 |
| 9.5 | 44 | 10.5 | 28.0 |
| 10 | 44.5 | 11 | 28.5 |
| 10.5 | 45 | 11.5 | 29.0 |
| 11 | 46 | 12 | 29.5 |
| 12 | 47 | 13 | 30.5 |
| 13 | 48 | 14 | 31.5 |
Women's Size Chart
| UK | EU | US | Foot Length (cm) |
|---|---|---|---|
| 3 | 35.5 | 5 | 22.0 |
| 3.5 | 36 | 5.5 | 22.5 |
| 4 | 37 | 6 | 23.0 |
| 4.5 | 37.5 | 6.5 | 23.5 |
| 5 | 38 | 7 | 24.0 |
| 5.5 | 38.5 | 7.5 | 24.5 |
| 6 | 39 | 8 | 25.0 |
| 6.5 | 40 | 8.5 | 25.5 |
| 7 | 40.5 | 9 | 26.0 |
| 7.5 | 41 | 9.5 | 26.5 |
| 8 | 42 | 10 | 27.0 |
| 8.5 | 42.5 | 10.5 | 27.5 |
Kids' Size Chart
| UK | EU | US | Foot Length (cm) |
|---|---|---|---|
| 10 (Junior) | 28 | 10.5 | 17.0 |
| 11 (Junior) | 29 | 11.5 | 17.7 |
| 12 (Junior) | 30.5 | 12.5 | 18.5 |
| 13 (Junior) | 31.5 | 13.5 | 19.3 |
| 1 (Youth) | 33 | 1.5 | 20.0 |
| 2 (Youth) | 34 | 2.5 | 20.8 |
| 3 (Youth) | 35.5 | 3.5 | 21.6 |
| 4 (Youth) | 36.5 | 4.5 | 22.3 |
| 5 (Youth) | 38 | 5.5 | 23.1 |
| 6 (Youth) | 39 | 6.5 | 23.9 |
How to Measure Your Foot at Home
- Place a sheet of paper on a hard floor, against a wall.
- Stand on the paper with your heel touching the wall.
- Mark the tip of your longest toe on the paper.
- Measure the distance from the wall edge to the mark in centimetres.
- Repeat for the other foot — measure both and use the larger size.
- Match your cm measurement to the closest size in the chart above.
Frequently Asked Questions
Do On Cloud shoes run true to size?
Most styles fit true to standard UK sizing. Runners covering long distances often prefer sizing up half a size for extra toe room.
Should I size up for running versus everyday wear?
Yes. Feet swell slightly during long runs or all-day wear, so a half-size up is recommended for running-focused styles.
What if I'm between two sizes?
Choose the larger size. A little extra room at the toe is more comfortable than a tight fit, especially for wider feet.
Do wide-fit options run the same as standard sizing?
Wide-fit models (such as Wide-fit Cloudmonster styles) follow the same length sizing as standard models — only the width profile changes.