Men’s Suit Jacket Sizes: Charts, Sizing Guide and Style Tips

Welcome to our complete guide to how to choose a jacket that fits you as comfortably as a “second skin.” Learn the easiest way to measure yourself for a jacket and how to convert between US and international sizes. Find out how to select exactly the right suit jacket size, shape and style for you. Also, you will find handy charts to convert sizes between US, UK and European blazers, sport coats and suit jackets.

Men’s Jackets at a Glance

  • The classic suit jacket is typically paired with suit pants in a fabric, weave, color and pattern that perfectly matches. Although made from a number of natural, synthetic and blended materials, the most popular is fine wool, with lighter cotton or linen often preferred for summer or warmer climates.
  • To determine your suit jacket size, measure the circumferences of your chest, sleeve and neck, as well as sleeve length.
  • On the casual to formal spectrum, blazers fall between sport coats and suit jackets. As a result, they feature all-around versatility and have become an extremely popular component of a business casual ensemble.
  • The least formal of the three types of jackets, sport coats, were originally worn for hunting or other outdoors activities.

Suit Jacket Size Chart

SizeChest (Inch)Waist (Inch)Neck (Inch)Sleeve (Inch)
XS32 - 3426 - 2813 - 13.531 - 32
S35 - 3729 - 3114 - 14.532 - 33
M38 - 4032 - 3415 - 15.533 -34
L41 - 4335 - 3716 - 16.534 - 35
XL44 - 4638 - 4017 - 17.535 - 36
XXL47 -4941 - 4318 - 18.535 - 37
Suit Jacket Size Chart

Suit Jacket Conversion Chart

Internat. SizesUS SizesUK SizesFrench SizesItalian SizesGerman Sizes
XS3030403040
XS3232423242
S3434443444
S3636464646
M3838484848
M4040505050
L4242525252
L4444545454
XL4646565656
XL4848585858
XXL5050606060
XXL5252626262

Boys size charts.

suit-jacket-sizes

How to Measure Your Suit Jacket Size?

  • Chest: The chest is the most important part of the body when it comes to finding the right size for your sport coat, suit jacket or blazer. Measure around the fullest part of your chest. Hold the measuring tape just under your arms and then extend around your shoulder blades. Remember to hold the tape level and parallel to ground.
  • Waist: Measure just below your waist at the height where you normally wear your pants (approx. 1 inch below your belly button). Ideally, keep one finger between the measuring tape and your body.
  • Sleeve: Measure from the center of the back of your neck, over your shoulder, down the outside of your arm to your wrist. It’s best if you bend your arm slightly while measuring.
  • Neck: Wrap the measuring tape around your neck while keeping a finger between the measuring tape and your neck. Alternatively, take a shirt that fits you well, particularly in the collar, lay out flat, and measure from the center of the collar button to the end of the collar buttonhole.
How to measure suit jacket size

Blazer Size Chart

SizeChest (Inch)Waist (Inch)Neck (Inch)Sleeve (Inch)
XS32 - 3426 - 2813 - 13.531 - 32
S35 - 3729 - 3114 - 14.532 - 33
M38 - 4032 - 3415 - 15.533 -34
L41 - 4335 - 3716 - 16.534 - 35
XL44 - 4638 - 4017 - 17.535 - 36
XXL47 -4941 - 4318 - 18.535 - 37
Blazer Sizing Chart

Sport Coat Sizes

SizeChest (Inch)Waist (Inch)Neck (Inch)Sleeve (Inch)
XS32 - 3426 - 2813 - 13.531 - 32
S35 - 3729 - 3114 - 14.532 - 33
M38 - 4032 - 3415 - 15.533 -34
L41 - 4335 - 3716 - 16.534 - 35
XL44 - 4638 - 4017 - 17.535 - 36
XXL47 -4941 - 4318 - 18.535 - 37

FAQ

What exactly is a blazer?

More formal than a sport coat, more casual than suit jackets, blazers offer the most versatility. Unlike the suit jacket below, a blazer does not come with a matching pair of pants. In the old days, a blazer was usually made of wool, was blue, had a breast pocket, and silver or gold buttons. Today, however, blazers often come in cotton and a variety of colors and with different types of buttons. Blazers are often worn as a part of the so-called business casual look, meaning they can be combined with jeans and  shirts other than dress shirts, such as polos, turtlenecks and even tees.

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What’s the difference between a sport coat and suit jacket?

Sport coats are, as the name might suggest, the least formal of all three jacket types. The sport coat originated for wear during hunting or other outdoor activities. Accordingly, it was made of a more robust fabric, such as tweed – hounds tooth, herringbone, Donegal, etc. – and was often patterned with more colorful designs than the two more formal variants.

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What is a suit jacket?

The classic suit jacket, which is often combined with suit pants made out of the same fabric. It is mostly made from fine wool. Different fabric weights can cater for warmer or colder climates. For summer, cotton or linen suits are also available. It is quite important that the suit jacket and the pants match up. Hence, it is not recommended to wear the suit jacket for example with jeans or khaki as this can result in the jacket having a difference of color vs. the pants.

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