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
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Aritzia vs Reformation sizing
This comparison uses visible measurement rows to map published sizes from Aritzia to the closest Reformation size.
Women tops
| Source size | Source bust/chest | Source waist | Source hip | Closest target | Target bust/chest | Target waist | Target hip |
|---|---|---|---|---|---|---|---|
| Aritzia 00 | 78 | 57.5 | 82 | Reformation 0 | 81.3 | 61 | 88.9 |
| Aritzia 0 | 81.5 | 61 | 86.5 | Reformation 0 | 81.3 | 61 | 88.9 |
| Aritzia 2 | 84 | 63.5 | 89 | Reformation 2 | 83.8 | 63.5 | 91.4 |
| Aritzia 4 | 86.5 | 66 | 91.5 | Reformation 4 | 86.4 | 66 | 94 |
| Aritzia 6 | 89 | 68.5 | 94 | Reformation 6 | 88.9 | 68.6 | 96.5 |
| Aritzia 8 | 91.5 | 71 | 96.5 | Reformation 8 | 92.7 | 72.4 | 100.3 |
| Aritzia 10 | 95.25 | 75.5 | 100 | Reformation 10 | 96.5 | 76.2 | 104.1 |
| Aritzia 12 | 99 | 80 | 104 | Reformation 10 | 96.5 | 76.2 | 104.1 |
Women dresses
| Source size | Source bust/chest | Source waist | Source hip | Closest target | Target bust/chest | Target waist | Target hip |
|---|---|---|---|---|---|---|---|
| Aritzia 00 | 78 | 57.5 | 82 | Reformation 0 | 81.3 | 61 | 88.9 |
| Aritzia 0 | 81.5 | 61 | 86.5 | Reformation 0 | 81.3 | 61 | 88.9 |
| Aritzia 2 | 84 | 63.5 | 89 | Reformation 2 | 83.8 | 63.5 | 91.4 |
| Aritzia 4 | 86.5 | 66 | 91.5 | Reformation 4 | 86.4 | 66 | 94 |
| Aritzia 6 | 89 | 68.5 | 94 | Reformation 6 | 88.9 | 68.6 | 96.5 |
| Aritzia 8 | 91.5 | 71 | 96.5 | Reformation 6 | 88.9 | 68.6 | 96.5 |
| Aritzia 10 | 95.25 | 75.5 | 100 | Reformation 8 | 92.7 | 72.4 | 100.3 |
| Aritzia 12 | 99 | 80 | 104 | Reformation 10 | 96.5 | 76.2 | 104.1 |
Fit notes: Runs slightly small (Tailored close-to-body framework silhouettes) True to size on bust, highly tailored at natural waist line True to size but narrow torso height
Sources: Aritzia and Reformation official size guides. Last checked: 2026-06-20.