Guide London Size and Fit guide

Brand & fit at a glance

Size system
UK chest
Fit
Shirts by a chest range; jackets by a chest number
Origin
London (since 1988)
Best for
Men’s shirts, jackets and knitwear

About Guide London: Guide London is a London menswear label. Guide Clothing Ltd started the brand in 1988. Shirts, jackets, coats, jersey and knitwear each have their own chest chart, and a shirt size is not the same cut as a jacket size. We have no sized pieces in at the moment. The table below is Guide London’s own jacket chart.

Guide London fit & sizing tips

  • Shirts use a chest range. Long sleeve and short sleeve share one table: S is 35–37 in (89–95 cm), M 38–40 in (96–102 cm), L 41–42 in (102–107 cm), XL 43–44 in (108–113 cm), 2XL 45–47 in (114–119 cm), 3XL 48–50 in (120–126 cm).
  • Jackets use a chest number. Sizes run from 36 to 52. Each number is that chest in inches (36 in is 91 cm, then up in steps to 52 in / 132 cm). The chart also lists centre-back length and sleeve length.
  • Coats, jersey and knitwear are different again. They use S to 3XL, but each letter is a single chest (S 36 in / 91 cm, then 2 in a size). A shirt M and a jacket 38 are different cuts.
  • Measure your chest. If you sit in a gap between two shirt bands, or between two jacket numbers, try the larger. Guide London do not publish a between-sizes rule.

Guide London Men’s Jackets

This is Guide London’s own jacket chart: each number is that chest in inches, with a centre-back length and a sleeve length beside it. Shirts use a chest range instead (S is 35–37 in), and coats, jersey and knitwear each have their own table. Sizes on our site come and go with stock.

Guide London men’s clothing size conversion
Size Chest Back Sleeve
36 36 in (91 cm) 70.6 cm 63 cm
38 38 in (96 cm) 71.8 cm 64.5 cm
40 40 in (101 cm) 73 cm 66 cm
42 42 in (106 cm) 74.2 cm 67.5 cm
44 44 in (111 cm) 75.4 cm 69 cm
46 46 in (116 cm) 76.6 cm 69.6 cm
48 48 in (121 cm) 77.8 cm 70.2 cm
50 50 in (127 cm) 79 cm 70.8 cm
52 52 in (132 cm) 80.2 cm 71.4 cm

Source: guidelondon.co.uk size guide

Frequently Asked Questions

Is a Guide London medium the same in a shirt and a jacket?

Shirts and jackets are sized differently. Shirts are S to 3XL by a chest range (M is 38–40 in). Jackets are sized 36 to 52, and 38 means a 38 in chest. Coats, jersey and knitwear use letters, but each letter is a single chest measurement, closer to the jacket scale than to the shirt scale.

What shirt size is a 40 inch chest?

Medium. M is 38–40 in (96–102 cm). A 41 in chest is the start of Large.

How are the jackets measured?

By chest in inches, from 36 to 52, plus a centre-back length and a sleeve length on the official chart. Size 40 is a 40 in (101 cm) chest, with a 73 cm back length and a 66 cm sleeve.

What if I am between sizes?

There is no published rule. A chest that falls inside a shirt range takes that letter. If you land in a gap, or between two jacket numbers, we would try the larger one.

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