1 numerical sizing which is based on neck and arm length and 2 alpha sizing xs s m l xl. Men with necks exceeding 17 inches and arms at least 36 inches long should wear an xl.
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These are typically whole numbers but some brands do offer dress shirts in half sizes.

Dress shirt measurements. Dress shirt tag example seller pro tip. If you measured on a 1 4 inch centimeter then round up to the nearest 1 2 inch centimeter. We always recommend measuring yourself however if you need a reference point we have included average us sizes in our men s dress shirt size chart.
The first number typically between 13 and 20 is the neck size. Do not adjust for shrinkage. Please see info care on individual product pages for items specific length measurements.
The size label on a dress shirt will include 2 3 numbers. For example if you measure your neck to be exactly 15 inches 38 cm around then your dress shirt size will be 15 inches 39 5 cm. For menswear companies typically offer shirts in alpha sizing small medium large or numerical sizing based on your neck and arm length.
On average a size m measures 29 5 inches 75cm down the centre back from neck to hem. Measure to the center of the meaty part of your palm. Men s dress shirt and casual shirt size chart.
1 neck 2 sleeve length 3 chest and 4 waist. To correctly determine your dress shirt size you need to take measurements of the following. Place one end of the measuring tape at the base of the center of the back of the neck.
Below is a simple guide on how to properly take these critical measurements. For instance the below image reflects a 16inch neck size and a 32 33 inch sleeve length as well as the overall shirt size large. Medium builds have a neck size between 15 and 16 and arms that measure 33 to 34 inches.
See how to take the measurements here. In us and britain dress shirts have two different measurements your neck size and your sleeve length both in inches. Before you learn how to measure sleeve length there are a few things you need to know about reading dress shirt sizes.
Run the measuring tape over your shoulder and let it hang down to your hand. If you don t have a partner measure a shirt with sleeves that are the right length. For example if your neck measures 16 3 choose a 16 5 collar.
When you have your neck measurement round it up to the nearest whole or half size. There are two different types of sizing scales for dress shirts. Large shirts are cut for men with necks that measure between 16 and 17 inches and arms around 35 inches long.
The dress shirt size will be half an inch bigger. The length of asos shirts vary according to style. This is the actual neck size.
Dress shirt measurements are based on your neck arm chest and waist measurements.