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Instantly convert Australian shoe sizes to US sizes for men, women, and kids
Use our free shoe size AU to US converter for accurate results. Includes full size charts with UK, EU, and foot length measurements for 2026.
Accurate Australian to US shoe size conversion for every gender and age group
Australian men's shoe sizes follow the UK sizing system, which runs one full size smaller than US sizes. Our shoe size AU to US converter automatically adds this difference so you always get the correct US equivalent for any men's Australian size.
Good news for women — Australian and US women's shoe sizes are identical. An AU women's size 8 is exactly a US women's size 8. Our converter confirms this instantly and also shows your equivalent UK and EU sizes in one place.
Every conversion shows your AU size, US size, UK size, EU size, and approximate foot length in millimetres. Perfect for shopping internationally online, ordering from US-based stores, or checking sizing for brands like Nike, New Balance, and Adidas.
Select conversion direction, gender, and enter your shoe size below
Australian shoe sizing differs from US sizing depending on whether you are buying men's or women's footwear. For women's shoes, the conversion is simple — Australian and US sizes are identical. A women's AU size 7 is exactly a US size 7. For men's shoes, the situation is different because Australia follows the UK sizing system, which runs one full size smaller than the US equivalent.
This means a man wearing an Australian size 9 will need a US size 10. This difference trips up many shoppers buying from US-based retailers like Zappos or Nike's US website. Understanding this one-size gap is the key to getting the right fit when ordering internationally in 2026.
Figure: Men's shoe size AU to US conversion — Australian size 9 equals US size 10
The table below shows a complete men's shoe size AU to US conversion including UK, EU, and approximate foot length in millimetres. Men's Australian sizes follow the UK system and are always one size smaller than the US equivalent.
| AU / UK Size | US Size | EU Size | Foot Length (mm) |
|---|---|---|---|
| 5 | 6 | 38 | 238 |
| 5.5 | 6.5 | 38.5 | 241 |
| 6 | 7 | 39 | 244 |
| 6.5 | 7.5 | 40 | 248 |
| 7 | 8 | 40.5 | 254 |
| 7.5 | 8.5 | 41 | 257 |
| 8 | 9 | 42 | 260 |
| 8.5 | 9.5 | 42.5 | 263 |
| 9 | 10 | 43 | 267 |
| 9.5 | 10.5 | 44 | 270 |
| 10 | 11 | 44.5 | 273 |
| 10.5 | 11.5 | 45 | 276 |
| 11 | 12 | 46 | 279 |
| 12 | 13 | 47 | 286 |
| 13 | 14 | 48 | 292 |
For women's footwear, the shoe size AU to US conversion is straightforward — Australian and US sizes are the same number. A women's AU size 7 equals a US size 7. The UK size is 2 sizes smaller than AU/US for women, and the EU equivalent is also shown below.
| AU Size | US Size | UK Size | EU Size | Foot Length (mm) |
|---|---|---|---|---|
| 4 | 4 | 2 | 35 | 228 |
| 5 | 5 | 3 | 36 | 235 |
| 6 | 6 | 4 | 37 | 241 |
| 7 | 7 | 5 | 38 | 248 |
| 7.5 | 7.5 | 5.5 | 38.5 | 251 |
| 8 | 8 | 6 | 39 | 254 |
| 8.5 | 8.5 | 6.5 | 39.5 | 257 |
| 9 | 9 | 7 | 40 | 260 |
| 9.5 | 9.5 | 7.5 | 40.5 | 263 |
| 10 | 10 | 8 | 41 | 267 |
| 11 | 11 | 9 | 42 | 273 |
| 12 | 12 | 10 | 43 | 279 |
Shoe size systems vary significantly across countries. Before using any shoe size AU to US converter, understanding why these differences exist helps you shop with confidence across all major footwear brands and retailers.
Australian men's shoe sizes are based on the UK Barleycorn system and are identical to UK sizes. They run one full size smaller than US men's sizes. So AU/UK 9 = US 10. This applies to all Australian footwear brands including Blundstone, RM Williams, and Rossi Boots.
Australian women's shoe sizes match US women's sizes exactly. An AU women's 8 equals a US women's 8, making international shopping straightforward for women. However, AU women's sizes differ from UK women's sizes — UK runs about 2 sizes smaller than AU/US for women.
The United States uses its own shoe sizing system derived from the Brannock Device measurement. US men's sizes are one full size larger than Australian and UK sizes. US women's sizes match Australian women's sizes. Major US brands like Nike and New Balance use this system on their US websites.
European shoe sizes are based on Paris points (⅔ of a centimetre per size). EU sizes apply across both men's and women's shoes without a gender difference. A men's AU 9 (US 10) equals approximately EU 43. A women's AU/US 8 equals approximately EU 39. EU sizes are used across most European brands.
Blundstone boots follow Australian and UK sizing, so they run one size smaller than US men's sizes. For women buying Blundstones, subtract 1.5 to 2 sizes from your US women's size to find your Blundstone size. A US women's 8 typically fits a Blundstone size 6 or 6.5.
For the most accurate shoe size AU to US conversion, measure your foot length in millimetres. Stand on paper, trace your foot, and measure heel to longest toe. Compare this to the foot length column in our size charts above. Always measure both feet — most people have one foot slightly larger than the other.
Men's: Add 1 to your AU size to get your US size. AU 8 → US 9, AU 9 → US 10, AU 10 → US 11.
Women's: Your AU and US size are the same. AU 8 → US 8, AU 9 → US 9.
Even without our shoe size AU to US converter above, the manual calculation is quick. Follow these steps for any size:
For example, a man with an Australian size 8.5 simply adds 1 to get US size 9.5. A woman with an Australian size 7.5 wears a US size 7.5 — no calculation needed at all.
Williams Shoes provides a comprehensive Australian shoe size guide covering men's, women's, and children's sizes with US, UK, and EU conversions for all major footwear categories.
View Size Guide →Zappos offers one of the most trusted US shoe size conversion guides, covering men's, women's, and kids' sizes across hundreds of major brands to help you find the perfect fit.
View Zappos Guide →Hush Puppies Australia provides a detailed AU to US, UK, and EU shoe size conversion guide with tips on how to measure your foot correctly for the most accurate size result.
View Hush Puppies Guide →