Blazer Size Chart
Blazers are a wardrobe staple that bridge the gap between casual and formal. They use the same sizing system as suit jackets, based on your chest measurement. The chart below covers US/UK and EU sizes along with chest and shoulder measurements to help you find the right fit.
| US / UK | EU | Chest (in) | Chest (cm) | Shoulder (in) | Shoulder (cm) |
|---|---|---|---|---|---|
| 34 | 44 | 34" | 86 | 16.5" | 42 |
| 36 | 46 | 36" | 91 | 17" | 43 |
| 38 | 48 | 38" | 97 | 17.5" | 44 |
| 40 | 50 | 40" | 102 | 18" | 46 |
| 42 | 52 | 42" | 107 | 18.5" | 47 |
| 44 | 54 | 44" | 112 | 19" | 48 |
| 46 | 56 | 46" | 117 | 19.5" | 50 |
| 48 | 58 | 48" | 122 | 20" | 51 |
| 50 | 60 | 50" | 127 | 20.5" | 52 |
Blazer vs Suit Jacket
While blazers and suit jackets may look similar at first glance, there are important differences that affect how and when you wear each one.
Construction
Suit jackets are designed to be worn as part of a matching set with trousers made from the same fabric. They tend to have lighter construction and thinner padding. Blazers are standalone garments with sturdier construction, often featuring metal buttons, patch pockets, and a slightly more structured silhouette.
Fabric
Suit jackets come in a wide range of fine fabrics including worsted wool, flannel, and linen. Blazers traditionally use heavier fabrics like hopsack, serge, or tweed, though modern blazers can be found in lighter materials as well. Blazer fabrics are typically more textured and durable than suit jacket fabrics.
Versatility
A blazer is more versatile because it is meant to be paired with different trousers. You can wear a navy blazer with chinos, jeans, or dress pants. A suit jacket should only be worn with its matching trousers. Wearing a suit jacket separately often looks off because the fabric shows signs of being part of a set.
Formality
Suits are more formal than blazers. A suit is appropriate for business meetings, weddings, and formal events. A blazer works well for smart casual occasions, business casual dress codes, and social events where a full suit would be too much. For the most formal occasions, consider a tuxedo instead.
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