How to Determine a Man’s Suit Jacket Size by its Measurements

The chest determines the size of the jacket and it is very difficult to alter a jacket to fit properly if the chest is wrong. This is how you measure the chest: Button the jacket then lay the jacket flat on its back on a clean, firm surface with the sleeves raised so you can measure the chest under the arms.

The waist of a jacket also needs to allow ease of movement to accommodate the man, his trousers, and a shirt. Before you measure a sleeve, look at the opening of the sleeve at the cuff hem. If you are a Buyer, find a jacket that fits you well and take its measurements using this guide. Need to determine a jacket size but it has no label? The chest determines the size of the jacket and it is very difficult to alter a jacket to fit properly if the chest is wrong.

If you return the purchased item, you must either return the free item or purchase Shop Suits · Sports Coats & Blazers · Shop Big & Tall · Shop Dress ShirtsBrands: Calvin Klein, Joseph Abboud, Kenneth Cole.
The suit or sportcoat size in the US is described as a number, referring to your chest measurement, and a letter, describing the jacket length. To find the corresponding pant size, see the pant conversion below.
Knowing how to determine blazer fit, as well as sport coat or suit jacket fit takes only a little time and minimal effort, with a big dividend of knowledge and style.
The European size of a suit is 10 more than the US Size. For example, a size 50 (European) is equivalent to a size 40 (US). Typically the waist size of a suit pant is 6
Measure a shirt that fits you well in the collar. Lay the collar flat, measure from center of top collar button to end of buttonhole. Number of inches equals your neck size.

Measure a shirt that fits you well in the collar. Lay the collar flat, measure from center of top collar button to end of buttonhole. Number of inches equals your neck size.

This is shown in the Example and the worksheet below. The jacket in the photo above measures 25 inches from underarm to underarm. To allow for ease of movement, I will subtract 4 inches. My jacket is a US Size 46! The rule of thumb of 4 inches is for a "classic fit" jacket - a "slim fit" or close-fitting jacket might have just 2 inches of ease. Keep the jacket as it was for the chest measurement and measure the waist, which is usually about midway between the underarm and the top of the pockets and usually near the second button from the bottom.

High-end suits tend to have a waist about 2 inches smaller than the chest. The jacket in the photo is 24 inches across the waist. This does not mean the man who wears this suit has a waist that measures 48 inches! The waist of a jacket also needs to allow ease of movement to accommodate the man, his trousers, and a shirt.

To get your next two measurements, flip the jacket over so the back of the jacket is facing you. To measure the length, start at the base of the collar at the seam where the collar joins the coat back. Measure from the collar seam down the back of the coat to the lower hem, with the fabric fully extended without stretching it.

This is the length. If a seller gives a measurement for the overall length, from top of collar down to the lower hem, you can subtract 1. Measure across the top of the back at the widest point between the seams that join the shoulders to the sleeves. The measurement should start at the line created by one seam and end at the other seam line. This would be roughly across the top of the shoulder blades.

Fashion designers change the shoulder width, so consider the style of the jacket and the look you prefer. A broader shoulder might work whereas a shoulder that is too narrow will pull. A tailor generally cannot widen the shoulders but may be able to pull them in an inch or so.

Shortening a sleeve is the easiest and most common alteration to make. Before you measure a sleeve, look at the opening of the sleeve at the cuff hem. Notice if it has a slant — it often does. You will measure the sleeve starting at the middle of the slant. That is your sleeve length. Advanced Tips about altering sleeves: It is very easy and therefore inexpensive for a tailor to shorten sleeves. When they are done measuring, slip a finger underneath the tape and look at the number.

We will also be adding one inch to this number so if it says 40 inches, make it a size You can skip this step if you are in good shape and enjoy European cut jackets which are more form fitting. But if you are, shall we say, all American, then add an inch. To measure a sport coat you will also need to know the length. This is an easy one because you should already know how tall you are. Anyone less than six feet tall but taller than five foot seven, is regular. Taller than six feet is long and shorter that five foot seven is short.

Go to the store. To measure a sport coat for yourself quickly without any help, pretend to buy a jacket. Tell them you need a sport coat but forgot what your measurements are.

To measure the chest of a jacket that fits you well, lay it on a clean flat surface and button it. If it is a two or three button jacket button the second button (from the . Sports coats are very similar to suit jackets when it comes to measuring. The fit should mould the body but be slightly looser in fit than the suit jacket. A sport coat, if you are unsure about what it is, is a less formal suit jacket that is intended to be worn without matching trousers. Suit and sport coat sizes have one number and one descriptive word (for example, 38 short, 40 regular, 42 long). The number refers to your chest measurement, and the descriptive word refers to the length of the jacket. Check your own measurements and look for additional size information on the product page to determine which size you should purchase.