How to convert a men’s US size to EU
Use the chest measurement and add 10 for the EU label.
1
Find the US size
Check the label inside the jacket; the number matches the chest in inches.
2
Add 10
US 40 becomes EU 50. Half sizes are uncommon in tailored clothing.
3
Check the chest
Compare the centimetre measurement with the brand chart before ordering.
What does this tool do?
Men’s tailored clothing is sized by chest measurement in inches, and EU labels add a fixed offset of 10. This converter also shows the chest in centimetres and the usual letter-size equivalent.
The Formula
EU size = US jacket size + 10; chest (cm) = US size × 2.54Frequently Asked Questions
How does a US 40 jacket convert to EU?
US 40 + 10 = EU 50. The US number is the chest measurement in inches, so US 40 also means a 40-inch (101.6 cm) chest.
Do trousers use the same conversion?
No. Trousers are sized by waist in inches and EU trousers use a different label. Use the waist measurement rather than the jacket size.