UK ↔ EU ↔ US, in one place.
Convert any shoe size between the three systems instantly. Pick a system, choose your size, and read the rest straight across.
Showing men's sizing. Change any box and the others update.
Full conversion chart
The complete reference table. Foot length is the heel-to-toe measurement most brands build a size around — the most reliable number to shop by.
| UK | EU | US | Foot (cm) | Foot (in) |
|---|
How to measure your feet
Numbers on a box vary by brand, but your foot length doesn't. Measure once and you can shop in any system with confidence.
Stand on paper
Put a sheet of paper on a hard floor against a wall. Stand with your heel touching the wall, full weight on the foot.
Mark the longest toe
Mark the paper at the tip of your longest toe — which isn't always the big toe.
Measure heel to toe
Measure the distance from the wall edge to your mark in centimetres. That's your foot length.
Use the larger foot
Measure both feet and go by the bigger one. Measure in the evening, when feet are at their largest.
Signs your shoes don’t fit — and why it matters
In over 30 years of clinical practice, a striking number of the everyday foot problems I saw came back to one thing: shoes that didn’t fit. The good news is your feet usually warn you long before there’s any lasting harm — if you know what to look for.
Too short
Bruised or blackened toenails, sore toe-tips, and toes that start to claw or curl under. A thumb’s width of room beyond the longest toe is about right.
Too narrow
Corns and hard skin on the sides of the foot or between the toes, a pinched feeling across the ball, and sometimes numbness or tingling from pressure on the nerves.
Too loose
Heel slipping at every step, blisters from rubbing, and toes gripping to keep the shoe on. Going a size up to gain width usually causes this — look for a wider fitting instead.
Why bother getting it right? Because poorly fitting footwear is one of the most common contributors to corns, calluses, aggravated bunions, ingrown toenails and forefoot nerve pain — and nearly all of it is avoidable with the correct length and width.
Guides & articles
Get the most from the converter with our plain-English guides to measuring, sizing systems and fit.
How to Measure Your Foot Size at Home
A simple step-by-step method using just paper and a ruler — and the mistakes that lead to the wrong size.
Read guide →UK, EU and US Shoe Sizes Explained
Why the same foot gets three different numbers, and how the systems actually relate.
Read guide →Shoe Width Fittings Explained
What D, E, EE and 4E mean, how UK and US widths differ, and how to tell if you need a wider fit.
Read guide →Children’s Shoe Sizes: A Parent’s Guide
How often to measure, how much growing room to leave, and how kids’ size systems work.
Read guide →Why Your Shoe Size Varies Between Brands
A UK 8 here, a UK 9 there — why the label isn’t a standard, and how to buy around it.
Read guide →About the author
Martin Hale — retired UK podiatrist
This guide is written by Martin Hale, a retired UK podiatrist with over 30 years in clinical practice, where footwear and fit were part of the daily work. He is no longer HCPC-registered, and this site offers general guidance to help you choose better-fitting shoes — it is not a substitute for a personal assessment by a registered clinician, especially if you have an existing foot or health condition.