📌 Overview

Convert shoe sizes between US, UK, EU, Chinese (mm) and Japanese systems for men, women and kids, based on actual foot length.

👟 Shoe Size Converter

Convert shoe sizes between US, UK, EU, Chinese (mm) and Japanese systems for men, women and kids, based on actual foot length.

📋 How to Use

Choose men’s, women’s or kids’ sizing.
Pick the size system you know.
Enter your size or measure your foot length in mm.
Read the equivalent sizes in all systems.

❓ FAQ

How do I measure foot length correctly?

Stand on a sheet of paper against a wall in the evening (feet swell during the day), mark the longest toe, and measure from the wall. Measure both feet and use the larger one.

Why do sizes vary between brands?

There is no enforced international standard, and each brand uses its own last shape. Foot length in millimetres is the only reliable reference — always check the brand’s own chart too.

❓ More Questions

How do I measure foot length correctly?

In the evening (feet swell slightly), stand barefoot with heels against a wall on a sheet of paper, mark the longest toe, and measure the distance to the wall. Measure both feet and size to the larger one.

Why do sizes vary so much between brands?

There is no mandatory international standard for shoe sizes, and each brand has a different last. Foot length in millimeters is the only reliable reference; also check the brand's official size chart before buying.

💡 Use Cases

🌍

Overseas Shopping

Convert US sizes when buying abroad.

🎁

Buying Gifts

Work from a known size in another system.

👶

Kids Shoes

Track growing feet by length.

🔗 Related Tools

📖 Deep Dive: Shoe Size Converter

Why shoe sizes are so messy

Shoe-size systems have different origins: the UK/US use a variant of the Paris point based on foot length in inches, Europe uses the Paris point (each point is 2/3 cm), and China and Japan use foot length in millimeters directly. The three systems differ in both starting point and increment, so they cannot be converted by simple addition or subtraction.

Foot length is the most reliable base

All conversions in this tool use actual foot length (mm) as the intermediate base: EU size is about (footLengthMm + 15) / 6.67, CN size = footLengthMm, US men's is about (footLengthMm - 208) / 8.47 + 6. This is far more accurate than rough rules like US + 33 = EU.

Common reference (men's shoes)

Foot 250mm is about CN 250 / EU 40 / US 7.5 / UK 6.5.

Foot 260mm is about CN 260 / EU 41.5 / US 8.5 / UK 7.5.

Foot 270mm is about CN 270 / EU 43 / US 9.5 / UK 9.

Practical shoe-buying tips

Sneakers usually run half a size larger than dress shoes; leave room for toes.

Men's and women's US sizes differ by about 1.5 (women's = men's + 1.5).

Remeasure children's feet every 3 months.

This conversion is a general reference; always defer to the brand's official size chart.