A suit size chart lists jacket sizes (34-52) matched to chest measurements in inches, plus a length code — Short, Regular, or Long — based on height. A 40-inch chest equals a size 40 jacket; a 6-inch drop gives the matching pants size (34).
This guide walks through the full suit size chart for men and women, plus height-based length picks, pants sizing, fit checks, and US-to-EU conversions. Stick around for what happens when you land between two sizes.
Decoding a Suit Size Label
A tag like “42R” packs two pieces of data. The 42 is the jacket’s chest size, and the R marks Regular length.
Jackets always run bigger than bare skin. A 42 jacket actually measures close to 44-45 inches around the chest, leaving breathing room for a dress shirt layered underneath.
Trousers ride on a spec called the drop — the gap between chest and waist. American tailoring leans on a 6-inch drop, so a 42R jacket ships with a 36 waist pant. European houses like Fursac size closer to a 7-inch drop.
Taking Body Measurements for a Suit
Chest Measurement
Circle the tape around the broadest part of your chest, right under the arms. Breathe normally — don’t puff up.
Waist Measurement
Find your natural waistline, roughly where your torso bends side to side. Keep the tape level all the way around.
Shoulder and Arm Length
Track shoulder width bone to bone across the back. Then run the tape from that same shoulder point down to the wrist bone for sleeve length.
Hip and Inseam
Wrap the tape around the fullest point of the hips. For inseam, measure from the crotch seam straight down to the ankle.
Fast shortcut: dress shirt collar size roughly maps to jacket size — a 15-inch collar typically lines up with a 38-40 suit.
I am the admin and author of SizesForm, researching, verifying, and explaining measurements, dimensions, weights, and sizes in simple terms to help readers understand everyday comparisons accurately and confidently.
