Shoulder measurements for T-shirts, three steps with a tape measure

Short answer: You measure shoulder width across the back from one shoulder tip to the other, with a tape that rests lightly over the base of the neck. It takes three steps, and the number can be compared with a T-shirt you already like. Here are the steps and what you use the measurement for.

Shoulder width, what it actually is

Shoulder width is the distance between the two shoulder tips, where the shoulder turns into the upper arm. It is one of the most important measurements on a T-shirt because the shoulder seam should land exactly there. If the seam sits too far in, the top feels tight, and if it sits too far out, the sleeve hangs down over the arm.

Step one, find the shoulder tips

Stand relaxed with your arms by your sides and feel for the bone at the outer edge of each shoulder with your fingers. That is the shoulder tip. Ask someone to help, because it is hard to measure your own back accurately. If you are alone, lay a T-shirt you already like flat on a table and measure that.

Step two, measure across the back

Place the tape on one shoulder tip and run it lightly across the upper back to the other shoulder tip. The tape should follow the body, not be pulled out into a straight line through the air. Do not pull it tight, and let your arms hang naturally so your shoulders are not drawn forward or up toward your ears.

Step three, compare with the size

Write the number down and compare it with the measurements of a T-shirt you are happy with, or with those of bamboo T-shirts for men in the size you are considering. If your number falls between two sizes, think about whether you prefer a calm, loose drop or a closer one. Shoulder width is only one of several measurements.

Shoulder width and fit together

Shoulder width alone does not decide everything, because chest and length matter too. But shoulders are hard to change if they sit wrong, while a slightly long T-shirt is easier to swap or tuck in. That is why it is wise to start with the shoulders and then check chest and length.

Typical mistakes when measuring

The most common mistakes are measuring too tight, standing with raised shoulders or measuring over clothes. Thick sweaters can add several centimetres, so measure in a thin T-shirt or bare. If two measurements give different numbers, take the average and use it as your guide.

What the fabric means for the numbers

Viscose from bamboo is a soft fabric that can give a little with wear, and the measurements can change slightly after washing. Follow the care label and avoid very high heat so the T-shirt does not shrink across the shoulders. Let it dry on a hanger so the shoulder seam keeps its shape.

When the shoulders sit right

When the shoulder width fits, the rest of the T-shirt falls well and you forget you have it on. That gives a calm look that works with the rest of what you wear all day, such as soft socks for men and bamboo boxer briefs of the same gentle kind.

Frequently asked questions

How precisely should I measure shoulder width?

One measurement in whole centimetres is enough for an honest picture. If you are unsure, measure twice and take the average so that small errors even out.

Can I measure the shoulders on a T-shirt instead?

Yes, lay a T-shirt you like flat on a table and measure from shoulder seam to shoulder seam. It is often the easiest way to get a number without help.

What if my shoulders are wider than the size?

Usually choose the next size up if the shoulders are what feels tight. Also check length and chest so the T-shirt does not become too large elsewhere, and compare with the size measurements.