Clothing Size Calculator: Find & Convert Your Size (US, UK, EU)

Measure your bust (or chest), waist and hips with a soft tape and enter them in the Women or Men mode. The calculator matches each measurement to the size chart, picks the size that fits the measurement needing the most room for the garment you choose, and shows that size in US, UK, EU, French, Italian, Japanese, Australian, Korean and Russian sizing.

For women's clothing, UK = US + 4 and EU = US + 32, so a US 8 is a UK 12 and an EU 40. France adds one more EU size (FR 42) and Italy two (IT 44). Men's jackets use the chest in inches in both the US and UK, and the EU size is 10 higher (US 40 = EU 50). The Converter mode shows every equivalent at once.

Choose the size for the measurement that needs the most room: bust for tops, hips or waist for bottoms, and the largest of the three for dresses. Then tailor the rest or pick stretchy or wrap styles. The calculator shows a fit meter for each measurement and warns you when they span two or more sizes.

Measure snugly around your ribcage just under the bust (underbust) and loosely around the fullest part (bust). Round the underbust in inches to an even number for the band; each inch of difference between bust and band is one cup size (1" = A, 2" = B, 3" = C, 4" = D). Use the Bra mode to do the rounding, see your size in 7 countries and get sister sizes.

Sister sizes hold the same cup volume on a different band. When you go down one band size, go up one cup (34C → 32D); when you go up a band, go down a cup (34C → 36B). They help when your band feels too loose or too tight but the cups fit.

Men's UK sizes are about 0.5–1 below US sizes and women's UK sizes about 2–2.5 below US. EU sizes are roughly men's US + 33 and women's US + 31. Japan and Korea use foot length in cm or mm. Measure your foot and use the Shoes mode for an exact chart match, including width.

Add 1.5 to a men's US size to get the women's US size for the same foot (men's 8 ≈ women's 9.5), or subtract 1.5 to go the other way. UK and EU sizes are unisex, so they don't change. The Shoes mode shows the men's or women's equivalent automatically.

Your suit jacket size is your chest measurement in inches, rounded to the nearest even number, with Short, Regular or Long length chosen by height. Dress shirts are sized by neck (add half an inch to your neck measurement) and sleeve length from the centre back of the neck to the wrist. The Men mode calculates all of them plus your suit drop.

Men's jeans are labelled waist × inseam in inches, such as W32 L32. Women's jeans use either US numeric sizes or a denim waist size, where 27 is about a US 4 and 29 about a US 8. Enter your waist, hips and inseam in the Pants & jeans mode to get both, plus the EU and letter equivalents.

Go by height rather than age. European kids' sizes are the child's height in centimetres (size 116 fits up to 116 cm). Enter your child's height, or their age if you don't know it, and add the grow-into option for one size up.

Yes, Asian sizing generally runs smaller. A Japanese women's 11 is about a US 8, and Japanese men's letter sizes run about one size small, so a US M is often a JP L. Korean women's sizes use 44, 55, 66, 77, 88, where 55 is about a US 2–4.

Yes. It's free with no sign-up, and every calculation runs in your browser. Your measurements are stored only on your own device so they're ready next time, and are never uploaded or shared.