Men's clothing size conversion
US/UK chest 40 = EU 50 = MFor men's jackets, suits and coats, US and UK sizes are the chest measurement in inches. EU sizes add 10.
The chart
| Letter | Chest (in) | Chest (cm) | US / UK | EU |
|---|---|---|---|---|
| XS | 34 | 86 | 34 | 44 |
| S | 36 | 91 | 36 | 46 |
| M | 38 | 97 | 38 | 48 |
| M | 40 | 102 | 40 | 50 |
| L | 42 | 107 | 42 | 52 |
| L | 44 | 112 | 44 | 54 |
| XL | 46 | 117 | 46 | 56 |
| XXL | 48 | 122 | 48 | 58 |
How to use it
US and UK jacket sizes are the chest in inches, measured around the fullest part. The EU size is that number plus 10.
A size 40 jacket is for a 40 inch (about 102 cm) chest. Shirts are sold by neck size instead, which this chart does not cover.
Fit differs by brand and cut. Slim and regular cuts in the same size are not the same, so check the brand's chart.
Questions
What is a US 40 jacket in EU sizes?
A US 40 is an EU 50. Add 10 to the US or UK chest size.
Is a US suit size the same as a UK suit size?
Yes. Both are the chest measurement in inches, so a US 40 is a UK 40.
What letter size is a 40 chest?
Usually medium. A 42 or 44 is large. Brands vary by one size.
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