US to UK Clothing Size
Converting clothing sizes from United States to United Kingdom is one of the most frequent international shopping headaches. A US size that fits you perfectly at home will almost never match the same number in UK. This page gives you the complete conversion chart for men and women clothing, with waist, bust, and hip measurements included so you can double check against any brand specific size guide. All conversions use the ISO 8559 international body measurement standard as a baseline.
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US to UK Clothing Size Chart
The complete chart with men and women sizes converted from US to UK, with underlying waist and bust measurements included.
| Waist (cm) | US (Letter) | US (Num) | UK | EU | AU | JP |
|---|---|---|---|---|---|---|
| 60 | XS | 0 | 4 | 32 | 4 | S |
| 63 | XS | 2 | 6 | 34 | 6 | S |
| 66 | S | 4 | 8 | 36 | 8 | M |
| 70 | S | 6 | 10 | 38 | 10 | M |
| 74 | M | 8 | 12 | 40 | 12 | L |
| 78 | M | 10 | 14 | 42 | 14 | L |
| 82 | L | 12 | 16 | 44 | 16 | LL |
| 87 | L | 14 | 18 | 46 | 18 | LL |
| 92 | XL | 16 | 20 | 48 | 20 | 3L |
| 97 | XL | 18 | 22 | 50 | 22 | 3L |
| 102 | XXL | 20 | 24 | 52 | 24 | 4L |
Why US Sizes Do Not Equal UK Sizes
United States and United Kingdom developed their clothing size standards separately, with different reference body measurements and different numbering schemes. US sizes run about 4 numbers smaller than UK: a US 6 equals a UK 10. This is because US sizing was recalibrated with vanity sizing from the 1970s onwards, while UK sizes remained closer to the original mid 20th century standard.
Shopping Tips Across Sizing Systems
When shopping internationally, always: (1) measure your bust, waist, and hips in centimeters; (2) check the brand size chart on the product page, since brands often deviate from national standards by one or two sizes; (3) read customer reviews specifically mentioning fit; (4) when in doubt, size up for tops and dresses, size down for jeans and skirts; (5) keep return costs in mind when ordering internationally.
Frequently Asked Questions
How do I measure my clothing size at home?
Measure your bust (fullest part of chest), natural waist (narrowest point), and hips (fullest part of seat) in centimeters. Use a soft tape measure, stand naturally, and do not pull tight.
Why does my size vary between brands?
Even within the same country, brands use different size standards. Zara runs smaller than H&M, which runs smaller than many US brands. Always check the brand specific size chart, not just the country.
Should I size up or size down?
For tops and dresses, size up if you are between sizes (easier to tailor smaller). For jeans and skirts, size down (fabric stretches). Always read item specific reviews.
What is European sizing (EU 38, EU 42)?
European sizes are based on body measurements in cm. EU 36 is approximately a US size 4, EU 38 is US 6, EU 40 is US 8. Each 2 step corresponds to roughly a 2 inch (5 cm) change in bust.
How do UK clothing sizes compare to US?
UK clothing sizes run about 4 numbers larger than US. US 6 = UK 10, US 8 = UK 12, US 10 = UK 14. AU is the same as UK.
What is Japanese sizing (JP S, JP M, JP L)?
Japanese sizes are smaller than Western letter sizes. JP M is roughly a Western S. If you are shopping Uniqlo or other JP brands, size up one from your Western letter size.
Why do US sizes have vanity sizing?
US clothing sizes have shifted dramatically since the 1970s. A modern US 6 corresponds to what used to be a US 10. This is called vanity sizing and is why US size numbers rarely match international sizes directly.
How do I convert my size to a different country?
Use our free Size Profile tool at /my-size. Enter your height, foot length, and waist once and instantly see your size in every country and major brand.