Shoe Size Converter
US, UK, EU and centimetre shoe sizes.
Enter your values
Enter the size you are working with.
Choose one of: US men's, US women's, UK, EU, Foot length (cm).
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Foot length
- 24.2 cm (9.53 in)
- US men's
- 9
- US women's
- 10.5
- UK
- 8
- EU
- 38.3
- Japan (cm)
- 24.2
Quick answer
Shoe sizing is based on foot length; US men's sizes run about 1.5 sizes below women's for the same foot.
At a glance
| What it does | US, UK, EU and centimetre shoe sizes. |
|---|---|
| Category | Everyday |
| Inputs needed | Size, System |
| Main output | Foot length |
| Cost | Free — no sign-up, no download |
How to use the Shoe Size Converter
- 1Enter the size you know.
- 2Pick which sizing system it uses.
- 3Read the equivalent sizes and foot length.
Inputs explained
- Size
- Enter the size you are working with.
- System
- Choose one of: US men's, US women's, UK, EU, Foot length (cm).
Worked example
Using the values the calculator loads with:
Inputs
- Size9
- SystemUS men's
Results
- Foot length24.2 cm (9.53 in)
- US men's9
- US women's10.5
- UK8
- EU38.3
- Japan (cm)24.2
Frequently asked questions
How do I measure my foot?
Stand on paper against a wall, mark the longest toe, and measure heel to mark in centimetres. Measure in the evening when feet are largest.
Why do brands differ?
There's no enforced standard — lasts vary by brand and even by model, so foot length in centimetres is the most reliable guide.
What do I need to enter into the Shoe Size Converter?
Just 2 values: size, system. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Shoe Size Converter work out the answer?
Shoe sizing is based on foot length; US men's sizes run about 1.5 sizes below women's for the same foot. The working is shown step by step so you can verify the result by hand.
Is the Shoe Size Converter free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.