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International Shoe Size Converter

Convert shoe sizes between US, UK, EU, and centimeter systems for men, women, and kids.

Tested tool guide Tested browser tools Checked August 16, 2026

What International Shoe Size Converter does and how it behaves

International Shoe Size Converter translates a selected footwear size into corresponding US, UK, EU, and centimeter entries for the chosen men, women, or kids category. It is useful when a store, manufacturer, or existing pair labels footwear in a system you do not normally use. Shoe sizes are not simple unit conversions: the category affects the result, and published conversion charts can differ. The most common mistake is treating the converted value as a guaranteed fit instead of a chart-based equivalent.

How the result is produced

1

Category-specific mapping

The converter relates the entered size to values in the other supported systems within the selected men, women, or kids category. Keeping the category fixed matters because the same US number can identify different footwear sizes across those groups. The result is a set of corresponding labels, not a mathematical conversion using one universal multiplier.

2

Centimeter interpretation

The centimeter entry provides a metric comparison alongside US, UK, and EU labels. Read it according to the sizing convention used by the converter, then compare it with the retailer's chart. A centimeter label may describe a foot-length-based size, while a product chart may instead publish recommended foot length, last length, or an internal shoe measurement.

Good uses

  • Checking which EU or UK size to consider when an online product page lists only a familiar US men's or women's size.
  • Comparing the label on a child's current shoe with sizes offered by an overseas retailer, while keeping the kids category selected throughout the conversion.
  • Turning a centimeter-based footwear listing into approximate US, UK, and EU labels before consulting the specific manufacturer's fit chart.

Limits and checks

  • Conversion tables are approximate because US, UK, and EU labels do not form one universally exact cross-system scale. Two brands can assign different equivalents to the same nominal size.
  • Men's, women's, and kids' labels are not interchangeable. Confirm the category before relying on a result, especially when a listing uses a unisex size or does not identify its sizing basis.
  • A converted size does not account for width, toe shape, intended sock thickness, foot volume, or model-specific fit. Half sizes and boundary values may also be unavailable in another system.

Common questions

Is the converted size guaranteed to fit in every brand?

No. The result identifies a likely cross-system equivalent, but brands and individual shoe models can run smaller, larger, narrower, or wider than that label suggests. Use the conversion to narrow the choices, then check the manufacturer's chart and any model-specific fit guidance. If measurements are supplied, compare them with a properly measured foot.

Is the centimeter result the exact inside length of the shoe?

Not necessarily. A centimeter-based size can be tied to foot length, while retailers may publish other measurements under similar wording. The shoe's internal space also includes fit allowance and varies by construction. Treat the result as a sizing counterpart unless the seller explicitly defines its centimeter figure as internal length and explains how that measurement was taken.

References and verification

The behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.

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