Men's Fashion

Men's Suit & Blazer Size Calculator: Chest & Height

Free tool · Updated October 2, 2026 · By CouponTalk

Your result

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Quick answer

A suit or blazer size combines your chest measurement in inches with a length based on height. Measure your chest under the arms and round to the nearest even number; then pick Short (under 5'7"), Regular (5'7"–6'0") or Long (over 6'0"). A 40" chest at 5'9" is 40R, which is EU 50.

How to measure

Chest: measure under your armpits around the fullest part of the chest and shoulder blades.
Height: stand straight without shoes against a wall.
For a slim fit, choose your exact size; for layering over a sweater, go one size up.

Men's Suit & Blazer Size Chart

Men's suit and blazer size chart
Suit size (UK/US/IN)	Chest	EU	Lengths
36	35–37" / 89–94 cm	46	36S / 36R / 36L
38	37–39" / 94–99 cm	48	38S / 38R / 38L
40	39–41" / 99–104 cm	50	40S / 40R / 40L
42	41–43" / 104–109 cm	52	42S / 42R / 42L
44	43–45" / 109–114 cm	54	44S / 44R / 44L
46	45–47" / 114–119 cm	56	46S / 46R / 46L
48	47–49" / 119–124 cm	58	48S / 48R / 48L
50	49–51" / 124–130 cm	60	50S / 50R / 50L

Suit length by height
Length	Height
Short (S)	Under 5'7" (170 cm)
Regular (R)	5'7"–6'0" (170–183 cm)
Long (L)	Over 6'0" (183 cm)

Sizes vary between brands by 1–2 cm. Always check the brand's own size chart before you buy.

Frequently asked questions

What does 40R mean in a suit?

40R means a 40" chest and Regular length, made for men roughly 5'7" to 6'0" tall. 40S is for shorter men and 40L for taller men.

How do I convert suit size to EU?

Add 10 to the UK/US chest size: 38 = EU 48, 40 = EU 50, 42 = EU 52.

How should a blazer fit?

Shoulder seams should end at your shoulder bone, the jacket should button without pulling, sleeves should show about half an inch of shirt cuff, and the hem should cover your seat.