Men's Clothing
Clothing Sizes · 7 specs
Direct Answer
Men's apparel sizing standardizes tops (XS to 3XL), pants and jeans (Waist × Inseam with US-to-EU conversions), tailored dress shirts (neck circumference and 3-point sleeve measurement), and suit jackets featuring the traditional Drop 6 tailoring rule.
Source: ASTM D6960 / ISO 3635 / International Tailoring Guilds · Last reviewed Aug 28, 2026
Specs
| Governing Standards | ASTM D6960 / ISO 3635 / EN 13402 |
| Tops Sizing Range | XS (34" chest) to 3XL (52" chest) |
| Pants & Jeans Format | Waist × Inseam (e.g., 32W × 32L) |
| US to EU Pants Conversion | EU Pants Size = US Waist (inches) + 16 (e.g., 32W = EU 48) |
| Dress Shirt Sizing | Collar Circumference (14.5"–18.5") × Sleeve Length (32"–37") |
| Suit Jacket Drop 6 Rule | Trouser Waist = Suit Jacket Size–6 inches (e.g., 40R jacket = 34W pants) |
| Suit Length Categories | Short (≤5'7"), Regular (5'8"–5'11"), Long (6'0"–6'3"), XL (>6'3") |
Men's Tops & Shirts Sizing Matrix
| Alpha Size | Chest (Inches) | Chest (cm) | Neck (Inches) | Neck (cm) | Waist (Inches) | Waist (cm) |
|---|---|---|---|---|---|---|
| XS | 33"–35" | 84–89 cm | 13.5"–14.0" | 34–36 cm | 27"–29" | 68–74 cm |
| S | 36"–38" | 91–97 cm | 14.0"–14.5" | 36–37 cm | 30"–31" | 76–79 cm |
| M | 39"–41" | 99–104 cm | 15.0"–15.5" | 38–39 cm | 32"–34" | 81–86 cm |
| L | 42"–44" | 107–112 cm | 16.0"–16.5" | 41–42 cm | 35"–37" | 89–94 cm |
| XL | 45"–47" | 114–119 cm | 17.0"–17.5" | 43–44 cm | 38"–40" | 96–102 cm |
| XXL (2XL) | 48"–50" | 122–127 cm | 18.0"–18.5" | 46–47 cm | 41"–43" | 104–109 cm |
| 3XL | 51"–53" | 130–135 cm | 19.0"–19.5" | 48–50 cm | 44"–46" | 112–117 cm |
Men's Pants & Jeans Sizing (US vs EU)
| US Waist (Inches) | EU Pants Size | Italy (IT) | UK / AU | Natural Waist (cm) | Standard Inseams |
|---|---|---|---|---|---|
| 28W | EU 44 | IT 44 | UK 28 | 71–74 cm | Short (30" / 76 cm) |
| 30W | EU 46 | IT 46 | UK 30 | 76–79 cm | Regular (32" / 81 cm) |
| 32W | EU 48 | IT 48 | UK 32 | 81–84 cm | Regular (32" / 81 cm) |
| 34W | EU 50 | IT 50 | UK 34 | 86–89 cm | Long (34" / 86 cm) |
| 36W | EU 52 | IT 52 | UK 36 | 91–94 cm | Long (34" / 86 cm) |
| 38W | EU 54 | IT 54 | UK 38 | 96–99 cm | Extra Long (36" / 91 cm) |
| 40W | EU 56 | IT 56 | UK 40 | 101–104 cm | Extra Long (36" / 91 cm) |