Shoe Size Converter
Convert shoe sizes between US/Canada, UK/India, EU, Japan/Mexico, China and foot length. Choose women, men, big kids or toddler sizes for a more accurate estimate.
Convert shoe size
Choose the shoe category, select the size system you know, then enter the size.
Quick shoe size examples
Approximate shoe size chart
Shoe size charts differ slightly between sources and brands. This chart is a practical reference, but it should not replace the size chart from the brand you are buying.
| Category | US/CA | UK/IN | EU | JP/MX | CN | Foot length |
|---|---|---|---|---|---|---|
| Women | 7.5 | 5.5 | 38 | 24 | 38 | 9.5 in / 24.1 cm |
| Women | 9 | 7 | 40 | 25.5 | 41 | 10 in / 25.4 cm |
| Men | 8.5 | 7.5 | 41 | 26 | 42 | 10.2 in / 25.8 cm |
| Men | 10 | 9 | 43 | 27 | 44 | 10.7 in / 27.1 cm |
| kids | 12 | 11 | 30 | 18.5 | 27 | 7.3 in / 18.4 cm |
| Toddlers | 7 | 6 | 23 | 14 | 18 | 5.6 in / 14.2 cm |
Why shoe sizes vary
Shoe sizes are not globally standardized. Systems differ by country, gender, age group, brand, model and the shape used to manufacture the shoe.
Why kids need more detail
Toddler, kid sizes use different ranges. Treating all children’s shoes as one category can produce confusing results.
Foot length is the anchor
Foot length is not perfect, but it gives a more consistent reference than size labels alone. Width, arch shape and shoe type still matter.
How to measure your foot size
Place your foot on paper
Stand with your heel against a wall and place your foot flat on a sheet of paper.
Mark the longest toe
Mark the end of your longest toe. This is not always the big toe.
Measure both feet
Measure from heel to toe in centimeters or inches. Use the longer foot if they differ.
Feet can swell during the day, so measuring later in the day often gives a more realistic size.
Common shoe size conversion mistakes
Using adult sizes for children
Kids’ sizing has separate ranges. kid and toddler sizes should not be mixed.
Assuming all brands fit the same
A size 42 sneaker, boot and dress shoe can all fit differently depending on brand and model.
Ignoring width and shape
Foot length is only one part of fit. Width, arch length, toe shape and shoe last all matter.
Buying exactly on the edge
If you are between sizes, check reviews and the brand chart. For kids, allow sensible growing room.
Free online shoe size converter
This shoe size converter helps you estimate equivalent sizes across US/Canada, UK/India, EU, Japan/Mexico, China and foot length measurements. It supports women’s, men’s, big kids, little kids and toddler shoe sizes.
Shoe sizing is complicated because there is no single global standard. Different countries, brands and manufacturers use different methods and size labels. Even two people with the same foot length may not find the same shoe equally comfortable.
Why the result is approximate
Shoe size conversion should be treated as a best estimate. It is useful for narrowing down the likely size, but it cannot fully account for width, arch shape, heel shape, shoe type or brand-specific sizing.
Want the deeper explanation?
For a full guide to international shoe sizes, kids’ sizing, measuring feet and avoiding common mistakes, read our Shoe Size Conversion Guide.
Shoe Size Converter FAQ
Is shoe size conversion exact?
No. Shoe size conversion is approximate because sizes vary by brand, country, model, shoe shape and width.
What is the best size system to use?
Foot length in centimeters or inches is often the best starting point, but you should still check the brand’s official chart.
Are toddler and kids sizes the same?
No. Toddler, kid sizes use different ranges and should be treated separately.
Why are kids’ shoe sizes sometimes split into little kids and big kids?
Many shoe brands divide children’s sizes into “little kids” and “big kids” because the numbering systems overlap and feet develop differently as children grow.
This converter combines them into one practical “Kids (5–12)” category to make size conversion simpler, but the internal ranges are still slightly different depending on brand and country.
Are US men’s and women’s sizes the same?
No. US men’s and women’s sizes use different numbering. Always choose the correct category.
Why do brands fit differently?
Brands use different shoe lasts, materials and fit preferences, so two shoes with the same label can fit differently.
Is this converter free?
Yes. It is free and runs locally in your browser.