UK to US Sizes Charts | Women, Men, Kids | Clothes Sizes

Converting UK to US sizes is not easy. British sizing is among the most-widely used sizing standard in the world, but that doesn’t mean identifying the perfect size for you is easy. The UK and Australia pretty much have the same metrics used for measurement, but the rest of the world have different ways of measuring sizes.

When you’re Asian or European trying to buy clothes carrying UK sizes, or for Americans, who have always thought UK and US sizes are almost the same, this guide will provide you comprehensive details on everything about UK sizes to make it easier for you to convert one size to the other, and still arrive with the best fitting apparel.

Understanding UK Sizing to US

The UK sizing is unique on its own, although most commonwealth countries including Australia, also follow the same standard of UK sizes. The entire Europe, however, has a different standard of sizes in both clothing and footwear. For children, UK sizes are mainly based on the height and other measurements, not age.

Understanding UK Sizing to US

For women’s clothes in the UK, they follow a standard measure called BS 3666, which was introduced in 1982. For men’s clothing, it is called BS 6185 which is also based on the bust, waist and hip measures.

How to convert US to UK sizes?

How to convert US to UK sizes?

UK to US Sizes Chart for Clothing

UK to US Sizes Chart for Clothing

Clothes following the UK sizing standard, usually determines the size considering the measurement of the bust, waist and hip.

UK Size Chart – Women

Below you may find a standardized UK size chart for women’s clothes.

US / Internat. SizeUK SizeEuro SizeFrench SizeItalian Size
3XS2283034
XXS4303236
XS6323438
S8343640
M10363842
L12384044
XL14404246
XXL16424448
3XL18444650
4XL20464852
5XL22485054
6XL24505256
7XL26525458
8XL28545660

UK Size Chart – Men

Size of men’s clothes is not so different in the UK standard compared to the US standards in general, although depending on the brand, there might still be some differences. Below you may find a standardized UK size chart for men. With this chart you can find out, how to convert a size 38 in UK to US.

US / Internat. SizeUK SizeEuro SizeFrench SizeItalian Size
XXS244043
XS28254044
XS28264044
S30274246
S30284246
S30294246
M32304448
M32314448
M32324448
L34334650
L34344650
L34354650
XL38364852
2XL42375054
3XL46385256

UK Size Chart – Children

Understanding the size of kids can be very tricky. You will have to take both their age and height into consideration when buying clothes especially those followig the UK sizing. These sizes are based on generic measures regardless of the children’s the gender.

Find children sizes here.

What is a UK size 8 in US?

What is a UK size 8 in US?

It depends, if you are a man or women and if you are looking for shoe or clothing sizes. See shoe sizes here. For clothes a UK 8 for women normally corresponds to S in US size. For men’s clothes this size does not exist in the UK.

What is a UK size 10 in US?

What is a UK size 10 in US?

It depends, if you are a man or woman and if you are looking for shoe or clothing sizes. See shoe sizes here. For clothes a UK 10 for women normally corresponds to M in US size. For men’s clothes this size does not exist in the UK.

What is US large in UK size men’s?

What is US large in UK size men’s?

Large size in the US normally corresponds to a UK size 34. However, there can be differences by brand. Best is to look your body measurement up in our table above.

How to Measure Your UK Size

How to Measure Your UK Size

Before trying to convert your sizes to UK sizing standards, it is a must to find out your most accurate measurement first. You might have an idea of what your size is, but making sure your size is correct will save you tons. Most people who think they are wearing the right size are often mistaken. Many usually get a larger size, while some mistakenly go for a smaller size.

You might want to get yourself measured with a tape in order to find your correct size. Then use a conversion chart to find your UK sizes.

In order to find out your correct size you might need the measurement of the circumference of your chest or breast (if you are a woman). This is measured in inches by wrapping the tape measure around the widest part of your chest/breast. This measurement will typically be useful for jackets, suits, tops and shirts.

Another important measurement is your neck size. Simply wrap the tape measure around your neck, and add an extra half inch to the number to get the measurement fast.

The measurement of your waist and the length of the legs are needed to figure out the size of your jeans and trousers. This can be done by wrapping a tape measure around the waist at the navel. For women, these measurements are taken at the widest part of the hips.

Knowing these measurements and converting them to find out your US sizes will be very helpful once you start shopping. Once you know your correct US size, it is also easier to find out your international sizes including UK’s.

Remember: In UK sizes are usually measured in centimeters rather than in inches, which is common in US.

Things to Remember About UK Sizes

  • When converting the US size to UK size, rules are different for men, women and children, especially when it comes to clothing.
  • Women have to go for bigger sizes for clothing.
  • Men can buy the same size of clothes they buy in usual US sizing.
  • For kids, the size differences in clothing are not very noticeable up to certain ages. But rules change depending on the gender if the kid is above 10 years older as certain measurements like chest (for girls) tend to be more prominent than guys.
  • All the size charts and conversion techniques can help you find the ideal size. But trying out the clothes before buying them is still the best way to find the perfect fit. Different manufacturers after all, uses different sizing standards.

Tips When Buying in UK Sizes

  • If you are a woman go for higher size than your US size when buying clothes. If you are a US 4, in UK size, you will be a UK 8.
  • If you are a man, go for the same size when buying clothes. For example, a size US 30-32 is the same as a UK 30-32.
  • If you are buying clothes for your kids less than 8 years old, the US size would be almost similar in UK sizes.
  • If your kid is older than eight years old, go for one size lesser than the US size. Sizes by this time will also be different for boys and girls.