Match sizes by foot length (cm), then check model fit — US labels alone can mislead across brands.
Chart match · verify brand charts(paid link)
Full converter (model + shoes you own) · Reverse: Nike → Clarks
Static conversion table (crawlable). Interactive tool above uses the same cm matching.
| Clarks US | cm | Nike US | Nike EU |
|---|---|---|---|
| 6.0 | 23.6 | 6.0 | 38.0 |
| 6.5 | 24.1 | 6.5 | 38.5 |
| 7.0 | 24.6 | 7.0 | 39.5 |
| 7.5 | 25.1 | 7.5 | 40.0 |
| 8.0 | 25.4 | 8.0 | 40.5 |
| 8.5 | 25.9 | 8.5 | 41.5 |
| 9.0 | 26.2 | 9.0 | 42.0 |
| 9.5 | 26.8 | 9.5 | 42.5 |
| 10.0 | 27.2 | 10.0 | 43.5 |
| 10.5 | 27.6 | 10.5 | 44.0 |
| 11.0 | 27.9 | 11.0 | 44.5 |
| 11.5 | 28.4 | 11.5 | 45.0 |
| 12.0 | 28.9 | 12.0 | 45.5 |
| 13.0 | 29.8 | 13.0 | 47.0 |
Clarks US 10 is 27.2 cm on this table — not Nike’s usual 27.1 — and the nearest Nike US is still 10 (EU 43.5). The US numbers line up 1:1 from 6 through 13, but the centimeter column is Clarks: US 6 prints 23.6 cm here (Nike sibling charts often sit at 23.5); US 13 prints 29.8 cm. The wear-box “Clarks 10 ≈ Nike 10.0 (about 27.2 cm)” is that Clarks-side match. Nike EU at that landing is 43.5, not 44.
A 1:1 US label is still two lasts. Wallabee is a crepe moccasin with a roomy, unstructured forefoot; Desert Boot is a chukka with collar volume and break-in. Nike’s linked models split the other way: AF1 '07 often feels long (half down unless wide); Dunk Low and Pegasus 41 are TTS length references; Vomero 5 is a running last. Taking a Wallabee 10 into AF1 10 because the chart says 10 equals 10 often feels long in the Nike shoe — that is the AF1 offset, not a Clarks centimeter error.
Convert from the Clarks size that actually fits. If Desert Boot already feels long, do not also half-down Dunk “because Nike runs big.” Half a size on this table is 26.8 → 27.2 → 27.6 cm. The extra millimeter versus Nike’s 27.1 at US 10 is why this page’s ticket is 27.2: nearest Nike is still 10, not 10.5. Do not jump Nike 10.5 from a TTS Clarks 10 unless the toe is actually short.
Even when charts match, lasts differ. Check these guides:
Clarks: Wallabee · Desert Boot
Nike: Air Force 1 '07 · Dunk Low · Pegasus 41 · Vomero 5
Also compare Clarks to: Blundstone
Check prices: Clarks Nike (paid link)
Clothes sizing uses a separate compare path.