American sizes converted

Short answer: American women's sizes follow a completely different scale from European ones, while men's sizes are often given in inches rather than centimetres. Always use a size table when you shop from an American store or read an American size.

Women's sizes need a table

An American size eight typically matches a European thirty eight. The numbers do not look alike, so it is easy to choose wrong if you guess. Look it up every time, also when you pick bamboo underwear for men for someone else at home. A table takes a minute and saves returns.

Men's sizes use inches

Multiply a chest measurement in inches by two point five four to get centimetres. It is a simple rule that works for almost all American menswear. Write the result down and compare it with your own measurement. The same goes for socks for men, though they are often sized by shoe size.

Shoe sizes are a third scale

American shoe sizes sit in a different place from European ones, which matters for socks. For bamboo joggers for men it only matters indirectly, since trousers are measured by waist and leg length. For socks, though, it is key to know your European shoe size and choose from that.

Letters are not the same everywhere

An American medium is often larger than a European one because the scale is built differently. If you just pick your usual letter, the fit may be looser than expected. Look instead at the centimetre measurements at chest and waist, and compare with an item you already enjoy wearing.

How to convert it yourself

If you only have measurements in inches, the maths is simple. Multiply by two point five four and round to the nearest whole centimetre. A tape with both inches and centimetres makes it even easier. Write your own measurements down in both units, so you have them ready for your next purchase.

Measure yourself before you buy

Stand relaxed and place the tape level around chest, waist and hips without pulling tight. Measure over thin clothing so the figures suit daily life. Take each measurement twice and use the average. With your own numbers you can compare any table, American, British or European, and decide calmly.

Use an item that fits

The easiest reference is a jumper or pair of trousers you already like. Lay it flat on a table, measure the width across chest or waist and double it. Then compare with the shop's own guide. That tells you which size to choose, even when the scale is unfamiliar.

Fabric changes the fit

Soft fabric with a little stretch gives more than firm fabric, which affects how a size feels. An item can fit well even if its measurement is slightly smaller than yours. Read whether it is described as loose or close fitting, and consider whether you want room to move or a snug fit.

Frequently asked questions

How do you convert inches to centimetres

Multiply by two point five four and round to the nearest whole centimetre, then you have a number for any table.

Are American sizes larger

Often yes, an American medium is typically larger than a European one, so always check the measurements, not just the letter.

Where do you find a reliable table

In the shop's own size guide, not a general table, because each brand uses its own measurements.