Men's Clothing

General apparel references for shirts, knitwear, outerwear, and tailoring.

Men's sizing is generally more standardised than women's, but EU and IT numbering still trips people up when crosslisting. Use this chart for shirts, jumpers, jackets, and outerwear.

Letter to Numeric Conversions

Size US / UK EU IT Chest (in) Chest (cm)
XS 34 44 44 34 86
S 36 46 46 36 91
M 38–40 48–50 48–50 38–40 97–102
L 42–44 52–54 52–54 42–44 107–112
XL 46 56 56 46 117
XXL 48–50 58–60 58–60 48–50 122–127
3XL 52–54 62–64 62–64 52–54 132–137

Dress Shirts (by Neck Size)

Neck (in) Neck (cm) Letter Size EU
14 35.5 S 36
14.5 37 S–M 37
15 38 M 38
15.5 39.5 M–L 39–40
16 40.5 L 41
16.5 42 L–XL 42
17 43 XL 43
17.5 44.5 XL–XXL 44–45
18 45.5 XXL 46

Reseller tips

  • For men's clothing, US and UK sizes are usually the same number.
  • EU / IT sizes are typically 10 higher than the US / UK equivalent (US 40 ≈ EU 50).
  • Slim-fit and regular-fit labels vary wildly between brands — note the actual chest measurement where possible.
  • Suit jackets use chest size in inches (US / UK) or centimetres (EU).

Browse other size guides

Women's Clothing

Reference sizing for dresses, tops, jackets, and other core wardrobe pieces.
Women's Bottoms

Quick conversions for skirts, trousers, denim, and tailored bottom sizes.
Women's Shoes

Match US, UK, and EU footwear sizing for heels, flats, and sneakers.
Men's Bottoms

Waist and fit conversions for trousers, jeans, and other bottom categories.
Men's Shoes

Footwear sizing shortcuts for trainers, boots, loafers, and dress shoes.