US to MX Shoe Size Chart
Easily convert your US shoe size to MX sizing. Use the chart below for instant results.
💡Quick Answer
To convert US to MX shoe sizes, use the chart below. For example, a US size 9 typically converts to MX size varies. Always check the exact conversion in the chart for the most accurate fit.
| US Size | MX Size | CM / JP |
|---|---|---|
| 4 | 22 | 22 |
| 4.5 | 22.5 | 22.5 |
| 5 | 23 | 23 |
| 5.5 | 23.5 | 23.5 |
| 6 | 24 | 24 |
| 6.5 | 24.5 | 24.5 |
| 7 | 25 | 25 |
| 7.5 | 25.5 | 25.5 |
| 8 | 26 | 26 |
| 8.5 | 26.5 | 26.5 |
| 9 | 27 | 27 |
| 9.5 | 27.5 | 27.5 |
| 10 | 28 | 28 |
| 10.5 | 28.5 | 28.5 |
| 11 | 29 | 29 |
| 11.5 | 29.5 | 29.5 |
| 12 | 30 | 30 |
| 13 | 31 | 31 |
| 14 | 32 | 32 |
| 15 | 33 | 33 |
| 3 | 20 | 20 |
| 3.5 | 20.5 | 20.5 |
| 4 | 21 | 21 |
| 4.5 | 21.5 | 21.5 |
| 5 | 22 | 22 |
| 5.5 | 22.5 | 22.5 |
| 6 | 23 | 23 |
| 6.5 | 23.5 | 23.5 |
| 7 | 24 | 24 |
| 7.5 | 24.5 | 24.5 |
| 8 | 25 | 25 |
| 8.5 | 25.5 | 25.5 |
| 9 | 26 | 26 |
| 9.5 | 26.5 | 26.5 |
| 10 | 27 | 27 |
| 10.5 | 27.5 | 27.5 |
| 11 | 28 | 28 |
| 12 | 29 | 29 |
How to use this chart
1. Find your US size in the first column.
2. Read across to find the corresponding MX 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 MX?
To convert your US shoe size to MX, find your size in the US column of the chart above and read across to the MX column. For example, if you are a US size 9, check the corresponding row for your MX size.
Is US shoe size the same as MX?
No, US and MX shoe sizing systems are different. You must use a conversion chart or calculator to find the correct size.
Do US sizes run larger than MX?
It depends on the specific size, but generally the numbering systems are quite different. Always refer to the chart for accurate conversion.
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