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Is a women's size 13 shoe big?

A US women's size 13 fits a foot of about 27.9 cm (11.0 in), longer than over 99% of women's feet. In EU sizing that is 43, in UK 11.5.

Percentile
>99%
of women have smaller feet than a women's 13
US women's 13 = 27.9 cm

US women's 13 by group

Foot length

Share of adults with feet shorter than 27.9 cm
GroupMeanSmaller than you1 in X
Women (about US women's 8.5)24.0 cm>99%1 in 2,005
Men (about US men's 10.5)26.5 cm87%1 in 8

The same foot in other systems

Same conversion as the shoe size test; brands differ by up to half a size
SystemSize
US women's13
US men's12
UK11.5
EU43
Foot length27.9 cm
Foot length11.0 in

Percentile is the share of the group with shorter feet than this size fits. “1 in X” counts the rarer side: people at or beyond this value above the median, at or under it below. The size is converted to foot length in cm, then compared with a normal distribution of foot lengths.

What this means

  • The average man's foot is 26.5 cm, about a US men's 10.5. The average woman's is 24.0 cm, about a US women's 8.5. A women's 13 is 3.9 cm longer than the women's mean.
  • Measured against men, the same foot is longer than 87% of them. In US men's sizing it is about 12.
  • Stock thins out fast above the mean plus two SDs. Being this rare has a cost, and it is measured in shipping fees.

Questions

Is a women's size 13 big?
A US women's 13 fits a foot of about 27.9 cm, which is longer than over 99% of women's feet. That is a big foot. Shops stock few pairs this size, and online filters know you by name.
What is a US women's 13 in EU and UK sizes?
A US women's 13 is about EU 43 and UK 11.5, for a foot of 27.9 cm (11.0 in). In US men's sizing the same foot is about 12. Brands round differently, so try before you trust.
How rare is a size 13 foot?
About 1 in 2,005 women have feet this long or longer. Among men it is 1 in 8.

Source: Foot length distributions: Jurca et al., Footwear Science 2019; Wunderlich and Cavanagh, Med Sci Sports Exerc 2001. Sizes converted with the same formula as our shoe size test. Percentiles on this page are our estimate from a normal distribution with the stated mean and SD.

Pick EU, US or UK, slide to your size, see the percentile.

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