Size conversion
US, UK, EU and Japanese sizes for rings, shoes, bras and clothes, computed with the same formulas as Find my size.
- Ring size conversion chart: US, UK, EU and JapanA US 7 ring measures about 54.4 mm around the inside and 17.3 mm across. That is UK N 1/2, EU 54.5 and Japan 14. The full chart, from US 3 to 13, is below.6 min
- Shoe size conversion chart from foot lengthA 26.5 cm foot (10.4 in) is about EU 42, UK 8.5, US men's 9.5, US women's 10.5 and JP 26.5. The chart below runs from 22 to 30 cm; a brand's own chart always wins.6 min
- Kids' shoe size chart by foot lengthA child's foot of 16 cm (6.3 in) is about EU 26, UK 9, US 9 and JP 16 on the children's scales. The chart covers 10 to 19.5 cm; past that, UK and US sizes start again at 1.6 min
- Bra size conversion chart across 7 systemsA European 75C is 90C in France, 3C in Italy, 34C in the UK and the US, 12C in Australia and C75 in Japan. Bands convert by fixed rules; cup letters match up to D, then the UK and US letters part ways.6 min
- Women's clothing sizes: US, UK and EU comparedA women's M is US 8 to 10, UK 12 to 14 and EU 40 to 42, for a bust of 90 to 95 cm (35.4 to 37.4 in). In these charts, UK numbers run 4 above US ones and EU numbers 32 above.6 min
- Men's clothing sizes: suits, shirts and pants comparedA men's EU 50 suit is a UK and US 40, for a chest of 98 to 101 cm. In suits, the EU number is the UK/US number plus 10; shirts go by neck size, and pants by waist and inseam in inches.6 min
- Kids' clothing sizes by age and height (2T to 14)Kids' sizes follow height more than age. A 4T fits about 100 to 106 cm, a size 8 about 125 to 130 cm and a 14 about 151 to 160 cm. The tables below come from Ruban Size's kids' templates.5 min
- Hat sizes: head circumference to US hat sizeA US hat size is your head circumference in inches divided by pi. A 57 cm (22.4 in) head is a 7 1/8, size M in Ruban Size's Hats template. The chart covers 54 to 61 cm, with kids' hats and helmets after it.5 min
- Centimeters to inches for size charts, fractions includedAn inch is exactly 2.54 cm, so divide centimeters by 2.54. Round body measurements to the quarter inch, small ones like hands and feet to the eighth, and heights to the whole inch in feet and inches.5 min
- Sock sizes: shoe size to S, M, LA sock size M fits US shoe sizes 7 to 9 and EU 39 to 42, a foot of about 24.7 to 26.7 cm. Each sock size covers three US shoe sizes and four EU sizes, from S (US 4 to 6) to XL (US 13 to 15).5 min
- Necklace length chart: collar to ropeA princess necklace is 45 cm (18 in) and sits on the collarbone. A choker is 40 cm (16 in), an opera 60 cm (24 in) and a rope 90 cm (36 in). The full chart, from collar to rope, is below.5 min
- Baby clothing sizes by age, height and weightBaby sizes are labeled by age, but height decides. A 0-3 M fits about 50 to 62 cm, a 3-6 M 62 to 68 cm and a 6-12 M 68 to 80 cm, with weight as the second check. The full chart, to 24 months, is below.5 min
- What number is a small, medium or large?In Ruban Size's women's dress and top templates, a small is a US 4 to 6, a medium a US 8 to 10 and a large a US 12 to 14 (UK 8 to 10, 12 to 14 and 16 to 18; EU 36 to 38, 40 to 42 and 44 to 46). Men's letters have no number of their own: they go by chest.6 min
- Japanese, Chinese and Korean clothing sizes explainedA Chinese label like 170/88A means 170 cm tall, a chest of 88 cm and body type A. A Japanese women's size like 9AR codes the bust, the hip type and the height. Korean tags give the chest or the height in centimeters. Read those numbers, not the letter.6 min
- Shoe widths explained: B, D, E, EE and wide fitIn US sizes, D is the standard shoe width for men and B the standard for women. Each letter is one step of 3/16 in (4.8 mm) on the Brannock scale: E, EE (2E) and beyond are wider, the letters before the standard narrower. A width only means something next to a length.5 min
- Swimsuit sizes: bust, underbust, waist and hipsA swimsuit M fits a bust of 88 to 93 cm, an underbust of 76 to 80, a waist of 70 to 75 and hips of 96 to 101 cm: a US 8 to 10, EU 40 to 42. Swim fabrics fit close, so between two sizes, take the larger one.5 min
- Scrubs sizes: tops, pants, regular and tallA scrubs M fits a chest of 95 to 102 cm, a waist of 78 to 85 and hips of 100 to 107 cm. Tops go by the chest, pants by the hips, and tall pants add 8 cm (about 3 in) of inseam: 86 cm against 78 for an M.5 min
- Helmet sizes by head circumferenceHelmets are sized by head circumference. In Ruban Size's Helmets template, S is 55 to 56 cm, M 57 to 58 cm and L 59 to 60 cm (M is 22.4 to 22.8 in). Measure around the widest part of the head, and between two sizes take the larger one.5 min
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