Clothing and shoe size converter for AU, UK, US, CA and EU
Find your best clothing and shoe size match before you buy. SizeSwapper compares official brand size guides, AU, UK, US, CA and EU sizing, and your own measurements — the strongest fit guidance available, short of trying it on. Get a confidence rating and between-size advice, so you shop faster with less guesswork and fewer wrong-size returns.
Popular examples- AU 12 → US 8
- Zara M → ASOS 10
- EU 39 → US 8
- Between sizes? We guide you to tighter or roomier fits
Don't see what you need?
Nike vs Adidas sizing
This comparison uses visible measurement rows to map published sizes from Nike to the closest Adidas size.
Women shoes
| Source size | Source foot length (cm) | Closest target | Target foot length (cm) |
|---|---|---|---|
| Nike US 5 | 21.8 | Adidas US 5 | 22.1 |
| Nike US 5.5 | 22.3 | Adidas US 5 | 22.1 |
| Nike US 6 | 22.8 | Adidas US 6 | 22.9 |
| Nike US 6.5 | 23.3 | Adidas US 6.5 | 23.3 |
| Nike US 7 | 23.8 | Adidas US 7 | 23.8 |
| Nike US 7.5 | 24.3 | Adidas US 7.5 | 24.2 |
| Nike US 8 | 24.8 | Adidas US 8 | 24.6 |
| Nike US 8.5 | 25.3 | Adidas US 9 | 25.5 |
| Nike US 9 | 25.8 | Adidas US 9.5 | 25.9 |
Men shoes
| Source size | Source foot length (cm) | Closest target | Target foot length (cm) |
|---|---|---|---|
| Nike US 7 | 24.8 | Adidas US 7.0 | 24.6 |
| Nike US 8 | 25.8 | Adidas US 8.5 | 25.9 |
| Nike US 9 | 26.8 | Adidas US 9.5 | 26.7 |
| Nike US 10 | 27.8 | Adidas US 10.5 | 27.6 |
| Nike US 11 | 28.8 | Adidas US 12.0 | 28.8 |
Fit notes: True to size Runs slightly small compared to Nike (Select 1/3 size up)
Sources: Nike and Adidas official size guides. Last checked: 2026-06-20.