Shoe Size Converter
Type a shoe size in any system, or your foot length in cm or inches, and see your size in US, UK, EU, Mondopoint, Japan and more. For men, women and kids.
UK and EU sizes are the same for men and women; US women’s sizes run about one bigger.
Halves are fine: 9.5, 9½ or 9 1/2. A C or Y after a kids’ size is ignored.
The usual figure is 1.5 cm (about 5/8 in). Use about 1 cm for a snug fit and 2 cm for thick socks or boots.
How to measure your foot
- Put a sheet of paper on a hard floor against a wall. Wear the socks you will wear with the shoes.
- Stand on it with your heel touching the wall and your weight on that foot.
- Mark the tip of your longest toe (it isn’t always the big toe), or ask someone to.
- Measure from the wall to the mark in cm or inches. Do both feet and use the longer one.
- Measure in the evening, when feet are at their largest. For children, measure every few months.
Type that number above with “My foot length”. The converter adds toe room (1.5 cm by default) to get the shoe’s inside length, then works out every size from it.
How your shoe size is converted
Your numbers, step by step. Every system is a length scale.
- 1
Your foot length
26.5 cm foot
- 2
Add toe room
26.5 + 1.5 = 28 cm
- 3
EU: Paris points
28 × 1.5 = 42
EU 42 - 4
UK and US: barleycorns
11.02 in × 3 − 25
= 8.07 → UK 8 · US men 9
Read more: the formula, a worked example, size charts and how to measure your foot
The formula
last length = foot length + toe room (1.5 cm)
EU = 1.5 × last length in cm
UK adult = 3 × last length in inches − 25
UK kids = 3 × last length in inches − 12
US men = UK + 1 · US women = UK + 2
US kids ≈ UK kids + 1
Mondopoint = foot length in mm
Japan = foot length in cm · Korea / China = mm
Every shoe size is a length. The EU system counts in Paris points of 2/3 cm, so the size is the last length in cm × 1.5. The UK system counts in barleycorns of 1/3 inch, starting from a fixed point, so each full size is 1/3 inch (8.47 mm) longer and each EU size 6.67 mm longer. Mondopoint and the Japanese, Korean and Chinese sizes skip the toe room and just give the foot length. Sizes are rounded to the nearest half size (EU, UK, US, Australia), 5 mm (Mondopoint, Korea, China) or 0.5 cm (Japan).
Worked example
A 26.5 cm foot with 1.5 cm of toe room needs a last of 26.5 + 1.5 = 28 cm.
- EU: 1.5 × 28 = 42.
- In inches the last is 28 ÷ 2.54 = 11.0236 in. UK: 3 × 11.0236 − 25 = 33.0709 − 25 = 8.0709, which rounds to UK 8.
- US men: 8 + 1 = 9. US women: 8 + 2 = 10.
- Mondopoint 265, Japan 26.5, Korea / China 265, Australia men’s 8.
Going the other way, US men 9 is UK 8, so the last is (8 + 25) ÷ 3 = 11 in = 27.94 cm and the foot is 27.94 − 1.5 = 26.44 cm.
Men’s sizes
| Foot cm | Foot in | UK | US men | EU | Mondo |
|---|---|---|---|---|---|
| 23.1 | 9.08 | 4 | 5 | 37 | 230 mm |
| 23.9 | 9.41 | 5 | 6 | 38 | 240 mm |
| 24.7 | 9.74 | 6 | 7 | 39.5 | 245 mm |
| 25.6 | 10.08 | 7 | 8 | 40.5 | 255 mm |
| 26.4 | 10.41 | 8 | 9 | 42 | 265 mm |
| 27.3 | 10.74 | 9 | 10 | 43 | 275 mm |
| 28.1 | 11.08 | 10 | 11 | 44.5 | 280 mm |
| 29 | 11.41 | 11 | 12 | 45.5 | 290 mm |
| 29.8 | 11.74 | 12 | 13 | 47 | 300 mm |
| 30.7 | 12.08 | 13 | 14 | 48.5 | 305 mm |
| 31.5 | 12.41 | 14 | 15 | 49.5 | 315 mm |
Women’s sizes
| Foot cm | Foot in | UK | US women | EU | Mondo |
|---|---|---|---|---|---|
| 21.4 | 8.41 | 2 | 4 | 34.5 | 215 mm |
| 22.2 | 8.74 | 3 | 5 | 35.5 | 220 mm |
| 23.1 | 9.08 | 4 | 6 | 37 | 230 mm |
| 23.9 | 9.41 | 5 | 7 | 38 | 240 mm |
| 24.7 | 9.74 | 6 | 8 | 39.5 | 245 mm |
| 25.6 | 10.08 | 7 | 9 | 40.5 | 255 mm |
| 26.4 | 10.41 | 8 | 10 | 42 | 265 mm |
| 27.3 | 10.74 | 9 | 11 | 43 | 275 mm |
Kids’ sizes
| Foot cm | Foot in | UK | US | EU | Mondo |
|---|---|---|---|---|---|
| 11.2 | 4.41 | 3 kids | 4C | 19 | 110 mm |
| 12 | 4.74 | 4 kids | 5C | 20.5 | 120 mm |
| 12.9 | 5.08 | 5 kids | 6C | 21.5 | 130 mm |
| 13.7 | 5.41 | 6 kids | 7C | 23 | 135 mm |
| 14.6 | 5.74 | 7 kids | 8C | 24 | 145 mm |
| 15.4 | 6.08 | 8 kids | 9C | 25.5 | 155 mm |
| 16.3 | 6.41 | 9 kids | 10C | 26.5 | 165 mm |
| 17.1 | 6.74 | 10 kids | 11C | 28 | 170 mm |
| 18 | 7.08 | 11 kids | 12C | 29 | 180 mm |
| 18.8 | 7.41 | 12 kids | 13C | 30.5 | 190 mm |
| 19.7 | 7.74 | 13 kids | 1Y | 32 | 195 mm |
Children’s sizes run from 0 to 13.5 and then start again at adult size 1, which is why kids’ 13 and adult 0 are the same length. In the US the little-kids scale is written with a C (toddler and child) and the big-kids scale with a Y (youth).
Notes on each system
- UK, Ireland, India: barleycorn sizes, the same for men and women.
- US and Canada: men’s is UK + 1 and women’s is UK + 2 in common use. Some charts use women’s = men’s + 1.5, so women’s sizes can differ by half a size. US kids’ sizes are roughly UK + 1; this one is an approximation.
- Europe: Paris points, the same for everyone. Some brands sell thirds (42⅔); this converter rounds to halves.
- Mondopoint (ISO 9407): foot length in mm, used for ski boots and military footwear.
- Japan, Korea, China: foot length in cm (Japan) or mm (Korea, China’s current standard).
- Australia and New Zealand: usually UK sizes for men and children, and US sizes for women.
Formulas: Mondopoint from ISO 9407; Paris point = 2/3 cm; barleycorn = 1/3 inch; 1 inch = 2.54 cm exactly. The 1.5 cm toe room and the US +1 / +2 offsets are common conventions, not a single official standard. Brands differ by up to a size. Checked 13 October 2026.
Common questions
How do I convert US to EU shoe sizes?
Turn the US size into a length, then into Paris points. For men, take 1 off the US size to get the UK size, then last length in inches = (UK + 25) ÷ 3 and EU = 1.5 × last length in cm. US men 9 is UK 8, a last of 11 inches (27.94 cm), so EU 1.5 × 27.94 = 41.9, which is EU 42. For women, take 2 off instead.
What is the difference between US men’s and women’s sizes?
For the same foot, the US women’s size is about one size bigger than the men’s size. US men’s is the UK size plus 1 and US women’s is the UK size plus 2, so a men’s 9 is roughly a women’s 10. UK and EU sizes are the same for men and women.
What is my shoe size if my foot is 26.5 cm?
With the usual 1.5 cm of toe room, a 26.5 cm foot needs a 28 cm shoe last. That is EU 42, UK 8, US men 9, US women 10, Mondopoint 265 and Japan 26.5. Try them on, because brands differ by up to a size.
What is Mondopoint?
Mondopoint (ISO 9407) is simply your foot length in millimetres, sometimes with the foot width too, for example 265/100. It is used for ski boots, military boots and in much of East Asia. Japan writes the same length in centimetres (26.5), and Korea and China in millimetres (265).
How do I measure my foot for shoe size?
Stand on a sheet of paper against a wall, heel touching the wall, wearing the socks you will wear. Mark the tip of your longest toe, then measure from the wall to the mark. Measure both feet in the evening, when feet are largest, and use the longer one.
Why does my size differ between brands?
The size systems fix the length of the shoe last, but each brand picks its own toe room, shape and rounding. That is why you can be a 9 in one brand and a 9.5 in another. Treat any conversion, including this one, as a starting point and check the brand’s own chart.
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