Suit Size Chart
Compare US/UK and EU suit references with chest measurement.
Sizing hub
Suit Size
Start with chest measurement, then check jacket length, shoulder fit, and the maker’s drop or trouser pairing.
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Men's Suit Size Chart
Compare men’s US/UK and EU suit sizes with chest measurement.
Suit Jacket Size Chart
Compare suit-jacket US/UK and EU size references with chest measurement.
Chest size is only the first step
Suit labels often begin with a chest-based number, but shoulder shape, jacket length, waist suppression, and trouser drop determine the final fit.
EU and US/UK labels use different numbering
Generic conversions can narrow the range, but tailoring conventions and brand blocks vary. Verify the maker’s chart before ordering.
Separate jacket number from tailoring details
Start with chest measurement, then check jacket length, shoulder fit, and the maker’s drop or trouser pairing. Chest can establish the starting jacket number, but shoulder shape, length, sleeve and trouser drop still need separate checks.
Use international number conversion only to narrow the range before consulting the suit maker’s chart.
Method & references
How this guidance is checked
These sources support the measurement method and help check real-world variation. They are not presented as one universal brand-size table.
- ISO 8559-2:2025 — Size designation of clothes — Primary and secondary dimension indicators — International Organization for Standardization (ISO). Clothing methodology: size designation should be based on defined body measurements rather than assuming universal retail labels.
- Men Size Guide — H&M. Cross-check for men’s EU/US clothing, chest and waist ranges, trousers, jackets, and suit-style numeric references.
- Sizing Guides — Charles Tyrwhitt. Cross-check for shirt neck, chest, sleeve and fit ranges, showing that fit blocks change garment measurements.
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