If you’re not familiar with tailored jacket sizes, use the guide below as a.

How to know your jacket size. If you measure 40 inches. The most accurate way to know your jacket size is to use the chart provided and take your measurements. Find the number on the tape where the two ends meet at the front of your chest.

Before measuring, flatten the fabric across the chest. Please measure it by wrapping the measuring tape around the upper arm, this is the widest part of the hand between elbow and the shoulders. For example, if you take a bust measurement of 37.5.

A suit jacket’s size is usually denoted by combining a number with an alphabet. Most of us know our casual clothing sizes—small, medium, large, whatever. Round up to the next whole number on the tape measure.

Before you learn how to measure jacket size, there are a few things you need to know about reading suit jacket sizes. Examples are 40r, 38s, 48l, etc. To calculate the best measurement, measure the largest part of your chest (around the back, across the shoulder blades and under the arms).

Make sure you place your arms flat against your body and check for the size. The first thing you want to measure is your neck. Jacket, pants, & dress shirt size chart.

Now, put them up in the air, and then place them on the sides. If you want to know how to size a sport coat, blazer or jacket, you’ll find our jacket size calculator particularly helpful. For a more relaxed, classic fit, choose the jacket size closest to your actual measured chest circumference.