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
ASOS size charts & fit guide
Women tops
| Brand size | AU | UK | US | EU | Bust/Chest (cm) | Waist (cm) |
|---|---|---|---|---|---|---|
| 4 | 4 | 4 | 0 | 32 | 78 | 60 |
| 6 | 6 | 6 | 2 | 34 | 80.5 | 62.5 |
| 8 | 8 | 8 | 4 | 36 | 83 | 65 |
| 10 | 10 | 10 | 6 | 38 | 88 | 70 |
| 12 | 12 | 12 | 8 | 40 | 93 | 75 |
| 14 | 14 | 14 | 10 | 42 | 98 | 80 |
| 16 | 16 | 16 | 12 | 44 | 103 | 85 |
| 18 | 18 | 18 | 14 | 46 | 110.5 | 92.5 |
Women dresses
| Brand size | AU | UK | US | EU | Bust/Chest (cm) | Waist (cm) |
|---|---|---|---|---|---|---|
| 4 | 4 | 4 | 0 | 32 | 78 | 60 |
| 6 | 6 | 6 | 2 | 34 | 80.5 | 62.5 |
| 8 | 8 | 8 | 4 | 36 | 83 | 65 |
| 10 | 10 | 10 | 6 | 38 | 88 | 70 |
| 12 | 12 | 12 | 8 | 40 | 93 | 75 |
| 14 | 14 | 14 | 10 | 42 | 98 | 80 |
| 16 | 16 | 16 | 12 | 44 | 103 | 85 |
| 18 | 18 | 18 | 14 | 46 | 110.5 | 92.5 |
Source: official size guide. Last checked: 2026-06-20.
ASOS sizing FAQs
How accurate is the ASOS size conversion on SizeSwapper?
ASOS's sizing is generally consistent but can vary a little between collections or categories, so treat the conversion as a close estimate rather than a guarantee.
Which ASOS sizes does SizeSwapper cover?
SizeSwapper covers ASOS's women's tops, dresses sizing across Australia, the UK, the US, Canada, the EU. If you need a category or region that isn't listed yet, you can request it directly from the converter.
Can I convert my size from another brand to ASOS?
Yes. Choose "Brand & size" mode, select the brand and size you already know fits, then choose ASOS as your target brand to see the closest match.
Do I need to know my measurements to convert to ASOS?
No. If you already know your size in another brand, SizeSwapper converts directly between brands without needing your measurements. If you'd rather enter your measurements directly, switch to "Measurements" mode instead.
When was ASOS's size data last checked?
ASOS's size chart was last checked on 20 June 2026, against its own official size guide. The source link is shown below the size tables on this page.