Jacket Size Chart
Compare tailored men’s jacket numbers and illustrative women’s US, UK, and EU clothing-size bands by chest or bust measurement.
Sizing hub
Jacket Size
Use chest or bust measurement first, then allow for the layers you expect to wear underneath.
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Men's Jacket Size Chart
Compare men’s jacket size references with measured chest.
Women's Jacket Size Chart
Compare women’s US, UK, and EU jacket references with bust, waist, and hip measurements.
Outerwear needs ease
A jacket measurement is not only about body size. Insulation, layering, mobility, and the intended silhouette can all change the useful size.
Use the correct garment family
Suit jackets, casual jackets, and insulated outerwear may use different size conventions even when the same number or letter appears.
Size the jacket for its intended use
Use chest or bust measurement first, then allow for the layers you expect to wear underneath. A tailored jacket, casual shell and insulated coat can need different ease at the same body measurement.
Check chest or bust first, then account for shoulders, sleeve length, layers and the intended silhouette.
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.
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