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Women’s shoe size converter

UK and Irish, US and EU women’s shoes, plus foot length.

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Ireland uses the same clothing and shoe sizes as the UK. Brands still vary from any chart.

US8
EU39
Foot mm246

Whole sizes are the ASOS women’s footwear chart: US is two above the UK number and EU is 33 above it. Half sizes are that chart extended by 0.5, with the foot length set halfway between the published neighbours. Some shops print EU one size higher, so a UK 8 can be labelled 41 or 42. Australian women’s shoe labels are split: some match the UK number and some match the US number.

Women’s shoes. Published ASOS rows, with halves marked as extended.
UK/IrishUSEUFoot mmSource row
2435212ASOS
2½4½35½216Half-size extension
3536220ASOS
3½5½36½225Half-size extension
4637229ASOS
4½6½37½233Half-size extension
5738237ASOS
5½7½38½242Half-size extension
6839246ASOS
6½8½39½250Half-size extension
7940254ASOS
7½9½40½258Half-size extension
81041262ASOS
8½10½41½266Half-size extension
91142270ASOS

These are standard published conversions. A label from one brand can sit a size either side of the chart.

How to use it

  1. Select the UK or Irish size, including a half size if you wear one.
  2. Read the US size and the EU size from the ASOS whole-size chart, or the half-size extension.
  3. Compare the foot-length column with a measurement taken standing, later in the day.

The ASOS chart, and the other EU number

Whole sizes are the ASOS women’s footwear chart. UK 2 is EU 35 and US 4, with a 212 mm foot. UK 8 is EU 41 and US 10, with a 262 mm foot. The US number is two above the UK number. The EU number on this chart is 33 above the UK number.

Plenty of other charts print the EU size one higher, so a UK 8 is EU 42. If the shop’s own table says that, follow the shop. Half sizes here are the ASOS rows extended by 0.5, and the millimetres are the midpoint of the two published neighbours. ASOS itself prints whole sizes only. Australian women’s shoe labels sometimes match the UK number and sometimes match the US number.

Measure the longer foot

Stand on a piece of paper with the heel against a wall, mark the longest toe, and measure in millimetres. Feet swell through the day, and one foot is often longer. Use the longer foot and, if you land between rows, the larger size.

Ireland uses the same shoe sizes as the UK. Width, a pointed toe and a trainer last all change the fit after the length is right. These rows are a published chart. Two brands with the same number can fit differently, and a garment can be cut for a different body than the chart assumes.

Questions

What is a UK 6 in US and EU?

On the ASOS chart a UK 6 is a US 8 and an EU 39, for a foot of about 246 mm. Some EU charts will print 40.

Do I add two sizes for every women’s shoe?

For a US women’s size, the usual offset from the UK is two. Men’s shoes use a different offset. Children’s shoes are on their own page.

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