US
9
=
Europe
42.5
(27cm)
Also: UK 8.5JP 27CN 42KR 270BR 41MX 8AU 8.5
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Full Size Chart
| US | UK | EU | JP | CN | KR | BR | MX | AU | Foot length |
|---|---|---|---|---|---|---|---|---|---|
| 3.5 | 3 | 35 | 21.5 | 35 | 215 | 33 | 2.5 | 3 | 21.5cm |
| 4 | 3.5 | 36 | 22 | 36 | 220 | 34 | 3 | 3.5 | 22cm |
| 4.5 | 4 | 36.5 | 22.5 | 36 | 225 | 34 | 3.5 | 4 | 22.5cm |
| 5 | 4.5 | 37 | 23 | 37 | 230 | 35 | 4 | 4.5 | 23cm |
| 5.5 | 5 | 37.5 | 23.5 | 38 | 235 | 36 | 4.5 | 5 | 23.5cm |
| 6 | 5.5 | 38 | 24 | 38 | 240 | 36 | 5 | 5.5 | 24cm |
| 6.5 | 6 | 39 | 24.5 | 39 | 245 | 37 | 5.5 | 6 | 24.5cm |
| 7 | 6.5 | 40 | 25 | 40 | 250 | 38 | 6 | 6.5 | 25cm |
| 7.5 | 7 | 40.5 | 25.5 | 41 | 255 | 39 | 6.5 | 7 | 25.5cm |
| 8 | 7.5 | 41 | 26 | 41 | 260 | 39 | 7 | 7.5 | 26cm |
| 8.5 | 8 | 42 | 26.5 | 42 | 265 | 40 | 7.5 | 8 | 26.5cm |
| 9 | 8.5 | 42.5 | 27 | 42 | 270 | 41 | 8 | 8.5 | 27cm |
| 9.5 | 9 | 43 | 27.5 | 43 | 275 | 41 | 8.5 | 9 | 27.5cm |
| 10 | 9.5 | 44 | 28 | 44 | 280 | 42 | 9 | 9.5 | 28cm |
| 10.5 | 10 | 44.5 | 28.5 | 44 | 285 | 43 | 9.5 | 10 | 28.5cm |
| 11 | 10.5 | 45 | 29 | 45 | 290 | 43 | 10 | 10.5 | 29cm |
| 11.5 | 11 | 45.5 | 29.5 | 46 | 295 | 44 | 10.5 | 11 | 29.5cm |
| 12 | 11.5 | 46 | 30 | 46 | 300 | 44 | 11 | 11.5 | 30cm |
| 13 | 12.5 | 47 | 31 | 47 | 310 | 45 | 12 | 12.5 | 31cm |
| 14 | 13.5 | 48 | 32 | 48 | 320 | 46 | 13 | 13.5 | 32cm |
Convert US 9 to Other Systems
Looking for the EU equivalent of US 9? In standard men's shoe sizing, it converts to EU 42.5. Your measurement of approximately 27cm corresponds to this size. These conversions are based on industry-standard measurements. Individual brands may have minor sizing differences, so checking the brand's own sizing guide alongside this conversion can help ensure a perfect fit.
Frequently Asked Questions
What is US 9 in EU men's shoe?
US size 9 in men's shoe is equivalent to EU size 42.5. This conversion is based on standard international sizing charts and is widely accepted across brands and retailers.
What is US 9 in other sizing systems?
US size 9 in men's shoe converts to: UK 8.5, EU 42.5, JP 27. Use our converter above to see all available systems.
Is US 9 the same as EU 42.5?
Yes, US 9 is equivalent to EU 42.5 in standard men's shoe sizing. However, fit can vary between brands, so trying on items or checking brand-specific size charts is always recommended.
How accurate are shoe size conversions?
Our size conversions are based on international standards and verified against multiple authoritative sources. They represent the most widely accepted equivalents. However, individual brands may size slightly differently, so we recommend trying items on when possible or checking the brand's own size guide.
Explore Other Converters
Need help? Read our How to Measure Shoe Size guide.