Men's Suit Sizes: A Size Chart & How to Measure

A men's suit size comes down to three numbers: a chest measurement (EU sizes run in centimetres, UK and US in inches), a "drop" that tells you how much narrower the waist is cut than the chest, and a length code — Short, Regular or Long — for your torso height. Work out your chest in centimetres and the rest of the sizing system falls into place.

Why suit sizing feels harder than it should be

A shirt is sized by your collar. Trousers are sized by your waist. A suit is sized by neither — it's sized by your chest, and everything else (waist suppression, sleeve, trouser rise) is drafted around that one number. That's why "which suit size am I" is one of the most-searched questions in menswear: the numbering looks arbitrary until you know what it's actually measuring.

The three numbers behind every suit size

Chest size — the base number

Every suit size starts with the chest, measured around the fullest part of the jacket. In the EU this is written directly in centimetres (a size 50 fits roughly a 100–104 cm chest). In the UK and US it's written in inches and jumps in even numbers — 38, 40, 42 — because jackets are traditionally cut in two-inch increments.

Drop — how the waist relates to the chest

"Drop" is the difference between the jacket's chest and its waist. A standard drop is six inches — so a 40R jacket assumes roughly a 34-inch waist underneath it. A slimmer, more tailored cut (drop 7 or 8) suppresses the waist further for a leaner silhouette. This is also why an off-the-rack jacket can fit your shoulders perfectly and still feel loose or tight through the middle — the drop wasn't built for your build. On a two-piece suit sold as jacket-and-trouser together, the drop is already decided for you; a tailor can still nip the waist a centimetre or two.

Short, Regular, Long — sizing for height

The length code adjusts jacket length and sleeve length for your height, independent of chest size. As a rough guide: Short suits people up to about 173 cm, Regular from 173–185 cm, and Long above 185 cm. Two men can both wear a 50 chest and still need different lengths.

EU / UK / US suit size chart

EU size	UK / US size	Chest (cm)	Chest (in)
46	36	91–94	36"
48	38	96–99	38"
50	40	101–104	40"
52	42	106–109	42"
54	44	111–114	44"
56	46	116–119	46"
58	48	121–124	48"

Treat this as a starting point, not a guarantee — cut varies from house to house, and the only chart that matters for a given jacket is the one published for that exact garment. Our own suits, including the Dendera Denim Suit, run EU 46–56 with the jacket and trouser matched to one size; the finished-garment measurements are listed on each product's size guide, because a size 50 should mean the same thing on the site as it does on the cutting table.

How to measure yourself for a suit

Chest

Wrap the tape around the fullest part of your chest, under the arms and across the shoulder blades, keeping it level front to back. The tape should sit snugly without compressing — you're measuring your body, not your ideal jacket.

Waist

Measure at your natural waistline — roughly where you'd tie a drawstring, usually a few centimetres above the navel — not at the hip where trousers may currently sit.

Shoulder width

Seam to seam across the back, from the edge of one shoulder to the other. This is the single hardest measurement to alter after the fact, so it's worth getting right — a jacket with the correct shoulder width is the foundation everything else is tailored around.

Sleeve length

From the shoulder seam to just past the wrist bone, arm relaxed at your side, so roughly 1–1.5 cm of shirt cuff shows past the jacket sleeve.

Jacket length

As a guide, the jacket hem should sit level with the middle of your palm when your arms hang naturally — roughly 73–81 cm from the base of the collar depending on your height.

Trouser inseam and rise

Inseam is measured from the crotch seam to the top of the shoe; rise is measured sitting down, from waistband to seat. Both matter more for how the trouser breaks over your shoe than the waist number alone.

Common sizing mistakes to avoid

A few habits cause more bad-fitting suits than bad measurements ever do. Measuring over a bulky jumper instead of a shirt adds false centimetres to the chest. Buying a size up "for comfort" almost always ends up looking borrowed, because the shoulder seam then sits past your actual shoulder — the one point of measure no tailor can move inward. And chasing the waist number on the trouser alone, without checking the rise and inseam, is how you end up with a good waistband and a break that pools at the ankle or stops short of the shoe. Measure once, over a normal shirt, and check the chest, the length code and the trouser rise together rather than any single number in isolation.

What a correctly sized suit should feel like

Getting the numbers right is only step one — the same chest size can still fit two men differently depending on how the jacket is cut through the shoulder and waist. Once you know your size, the next question is how it should actually sit on you; we cover that in full in how a suit should fit.

Made in Cairo, sized straightforwardly

Our suits are cut and finished in Cairo across fine wool, cotton and linen depending on the style, half-canvassed rather than fused, to a single house fit: fitted through the shoulder and chest, gently shaped at the waist, comfortable through the seat — never tight, never boxy. Sizes run EU 46–56 with jacket and trouser matched, so you're not guessing how a 50 jacket pairs with a 48 trouser. See the full range in our suits.