Shoe size converter from foot length
Measure your foot from the heel to the longest toe. Get the EU, UK, US and Japanese sizes, for adults or children.
Stand on paper, heel against a wall, mark the tip of the longest toe. Measure both feet and keep the longer.
- EU
- 40.5
- UK
- 7.5
- US men
- 8.5
- US women
- 9.5
- Japan (cm)
- 26
25.8 cm is 10⅛ in. Approximate: lasts differ, a brand’s own chart wins.
How the sizes are computed
UK and US sizes count in barleycorns, a third of an inch, from a fixed starting point: UK adult = 3 × foot length in inches − 23, US men one size more, US women two sizes more. The EU size counts in Paris points of two thirds of a centimeter: 1.5 × foot length in cm + 2. Japan uses the foot length in centimeters.
The results are rounded to half sizes. They are approximate because each brand builds its shoes on its own last, with its own room in front of the toes (ISO/TS 19407 describes these allowances). When a brand publishes a chart, it wins.
These are the formulas Find my size uses in Ruban Size when a shoe chart lists foot lengths.
Shoe size chart by foot length
| Foot length | Inches | EU | UK | US men | US women | Japan |
|---|---|---|---|---|---|---|
| 22.0 cm | 8⅝ in | 35 | 3 | 4 | 5 | 22 |
| 22.4 cm | 8⅞ in | 35.5 | 3.5 | 4.5 | 5.5 | 22.5 |
| 22.8 cm | 9 in | 36 | 4 | 5 | 6 | 23 |
| 23.2 cm | 9⅛ in | 37 | 4.5 | 5.5 | 6.5 | 23 |
| 23.6 cm | 9¼ in | 37.5 | 5 | 6 | 7 | 23.5 |
| 24.0 cm | 9½ in | 38 | 5.5 | 6.5 | 7.5 | 24 |
| 24.4 cm | 9⅝ in | 38.5 | 6 | 7 | 8 | 24.5 |
| 24.8 cm | 9¾ in | 39 | 6.5 | 7.5 | 8.5 | 25 |
| 25.2 cm | 9⅞ in | 40 | 7 | 8 | 9 | 25 |
| 25.6 cm | 10⅛ in | 40.5 | 7 | 8 | 9 | 25.5 |
| 26.0 cm | 10¼ in | 41 | 7.5 | 8.5 | 9.5 | 26 |
| 26.4 cm | 10⅜ in | 41.5 | 8 | 9 | 10 | 26.5 |
| 26.8 cm | 10½ in | 42 | 8.5 | 9.5 | 10.5 | 27 |
| 27.2 cm | 10¾ in | 43 | 9 | 10 | 11 | 27 |
| 27.6 cm | 10⅞ in | 43.5 | 9.5 | 10.5 | 11.5 | 27.5 |
| 28.0 cm | 11 in | 44 | 10 | 11 | 12 | 28 |
| 28.4 cm | 11⅛ in | 44.5 | 10.5 | 11.5 | 12.5 | 28.5 |
| 28.8 cm | 11⅜ in | 45 | 11 | 12 | 13 | 29 |
| 29.2 cm | 11½ in | 46 | 11.5 | 12.5 | 13.5 | 29 |
| 29.6 cm | 11⅝ in | 46.5 | 12 | 13 | 14 | 29.5 |
| 30.0 cm | 11¾ in | 47 | 12.5 | 13.5 | 14.5 | 30 |
Approximate equivalents, rounded to half sizes. Foot length from heel to longest toe.
How to measure
Stand on paper
Heel against a wall, weight on the foot, wearing the socks you wear with the shoes.
Mark the longest toe
Keep the pencil upright. It isn’t always the big toe.
Measure both feet
From the wall to the mark. Keep the longer foot.
Questions
Why is my size different from one brand to another?
Shoes are built on lasts with different shapes and toe room, so the same foot can fit two sizes. The formulas give a starting point; a brand’s own chart wins.
What is the difference between US men’s and women’s sizes?
For the same foot length, these formulas put the US women’s size one size above the men’s. Brands differ, and their own chart wins.
Should I size up for wide feet?
A wider shoe is better than a longer one. If the brand offers widths, keep your length and pick the width; Find my size tells shoppers whether a foot is narrow, regular or wide when the chart lists widths.
Do children’s shoes use the same scale?
No. UK and US children’s sizes count from a different start and roll over to adult sizes. Switch the converter to Children.
Read more
- How to measureHow to measure your foot length and widthStand on a sheet of paper with your heel against a wall, mark the tip of your longest toe, and measure from the wall to the mark: that is your foot length. For width, measure straight across the widest part of the foot. Do both feet and keep the larger numbers.5 min
- Size conversionShoe 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
- Size conversionKids' 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
Put it on your product pages.
Ruban Size does these conversions inside your size guide, in Find my size, in 22 languages. Free for 5 size charts.