US to AU Shoe Size Chart
Easily convert your US shoe size to AU sizing. Use the chart below for instant results.
💡Quick Answer
To convert US to AU shoe sizes, use the chart below. For example, a US size 9 typically converts to AU size varies. Always check the exact conversion in the chart for the most accurate fit.
| US Size | AU Size | CM / JP |
|---|---|---|
| 4 | 3.5 | 22 |
| 4.5 | 4 | 22.5 |
| 5 | 4.5 | 23 |
| 5.5 | 5 | 23.5 |
| 6 | 5.5 | 24 |
| 6.5 | 6 | 24.5 |
| 7 | 6.5 | 25 |
| 7.5 | 7 | 25.5 |
| 8 | 7.5 | 26 |
| 8.5 | 8 | 26.5 |
| 9 | 8.5 | 27 |
| 9.5 | 9 | 27.5 |
| 10 | 9.5 | 28 |
| 10.5 | 10 | 28.5 |
| 11 | 10.5 | 29 |
| 11.5 | 11 | 29.5 |
| 12 | 11.5 | 30 |
| 13 | 12.5 | 31 |
| 14 | 13.5 | 32 |
| 15 | 14.5 | 33 |
| 3 | 3 | 20 |
| 3.5 | 3.5 | 20.5 |
| 4 | 4 | 21 |
| 4.5 | 4.5 | 21.5 |
| 5 | 5 | 22 |
| 5.5 | 5.5 | 22.5 |
| 6 | 6 | 23 |
| 6.5 | 6.5 | 23.5 |
| 7 | 7 | 24 |
| 7.5 | 7.5 | 24.5 |
| 8 | 8 | 25 |
| 8.5 | 8.5 | 25.5 |
| 9 | 9 | 26 |
| 9.5 | 9.5 | 26.5 |
| 10 | 10 | 27 |
| 10.5 | 10.5 | 27.5 |
| 11 | 11 | 28 |
| 12 | 12 | 29 |
How to use this chart
1. Find your US size in the first column.
2. Read across to find the corresponding AU size.
3. If you are between sizes, we generally recommend sizing up for comfort.
* Note: These conversions are based on standard ISO 9407:2019 measurements. Specific brands may vary slightly.
🦶 How to Measure Your Feet
1. Trace Your Foot
The most accurate method for home measurement:
- Place a piece of paper on the floor against a wall.
- Stand on the paper with your heel against the wall.
- Hold a pen vertically (90°) and trace your foot outline.
2. Measure Length & Width
- Use a ruler to measure the length from the heel line to your longest toe mark.
- Measure the width at the widest part of your foot trace.
- Pro Tip: Subtract 0.2 inches (5mm) from length to account for the pencil width.
👟 Fit Check: The Thumb Test
Is it the right size?
- There should be about a thumb's width of space between your longest toe and the end of the shoe.
- The heel should fit snugly without slipping.
- The widest part of your foot should align with the widest part of the shoe.
Frequently Asked Questions
How do I convert US shoe size to AU?
To convert your US shoe size to AU, find your size in the US column of the chart above and read across to the AU column. For example, if you are a US size 9, check the corresponding row for your AU size.
Is US shoe size the same as AU?
No, US and AU shoe sizing systems are different. You must use a conversion chart or calculator to find the correct size.
Do US sizes run larger than AU?
It depends on the specific size, but generally the numbering systems are quite different. Always refer to the chart for accurate conversion.
Related Shoe Size Charts
Explore related conversion tools to find exactly what you need
Full Shoe Size Converter
Convert any region, plus CM and gender conversion
US to UK Shoe Size Chart
Convert US shoe sizes to UK
US to EU Shoe Size Chart
Convert US shoe sizes to EU
US to MX Shoe Size Chart
Convert US shoe sizes to MX
US to BR Shoe Size Chart
Convert US shoe sizes to BR
UK to US Shoe Size Chart
Convert UK shoe sizes to US