TinySandyFree Online Tools

Shoe Size Converter

Find the matching adult shoe size in the US men's, US women's, UK and European systems, or work out a size from the length of your foot. Instead of copying one shop's chart, the converter uses the published formulas behind each system (barleycorns for UK and US, Paris points for EU), so you can see exactly where a size comes from and how close it sits to the next half size.

Unit Converters Runs in your browser

Convert a Shoe Size

Shoe sizes are not a precise standard: each brand uses its own lasts. Treat the result as a starting point and check the brand's own chart.

Half sizes such as 9.5 are fine.

How to Use the Shoe Size

  1. Pick the system you already know in I know my size in, or choose a foot-length option if you measured your foot.
  2. Type the size or length. Half sizes are accepted.
  3. Read the equivalent sizes. The rounded value is the size you would normally order; the exact value shows whether you sit between two sizes.
  4. Scroll the chart to compare neighbouring sizes; the row closest to yours is marked.

About This Tool

Online shoppers buying from a store in another country, travellers, and anyone handed a European size when they only know their UK or US size.

Input: A shoe size or foot length  ·  Output: US, UK, EU sizes and foot length.

Features and Limitations

Features

  • Converts between US men's, US women's, UK, EU, centimeters, inches and Mondopoint in any direction.
  • Shows the exact calculated value next to the nearest orderable size, so in-between sizes are obvious.
  • A full adult chart from UK 3 to UK 13 in half sizes, generated from the same formulas.
  • Explains every assumption on the page; nothing is hidden in a lookup table.

Limitations

  • Adult sizes only. Children's and infant scales start from a different zero point and are not covered.
  • Brands differ by up to a full size; athletic, European fashion and Asian brands each use their own charts.
  • Foot length is converted with a fixed 2/3 inch (about 17 mm) toe allowance; real shoes vary with style and fit.
  • Results are computed in your browser; nothing you enter is sent to a server.

Example

UK 8 = US men's 9 = US women's 10.5 = EU 42 (exact 41.9) and fits a foot of about 26.2 cm. A foot measured at 24 cm comes out at roughly UK 5.5, US women's 8 and EU 38.5.

Frequently Asked Questions

How are these sizes calculated?

The UK size is three times the shoe last length in inches minus 25 (one size = one barleycorn, 1/3 inch). US men's is UK + 1 and US women's is US men's + 1.5 (the Brannock convention). EU sizes count Paris points of 2/3 cm, so EU = last length in cm × 1.5. Foot length is assumed to be the last length minus 2/3 inch.

Why does my shoe chart say something different?

Manufacturers set their own lasts and many round differently, for example some list US women's as UK + 2 rather than + 2.5. Use this converter to get close, then confirm with the brand's own table or by measuring a pair that fits.

How do I measure my foot?

Stand on a sheet of paper with your heel against a wall, mark the tip of your longest toe, and measure from the wall to the mark. Measure both feet in the evening and use the longer one.

What is Mondopoint?

Mondopoint (ISO 9407) is the foot length in millimeters, used for ski boots and military footwear. It describes the foot, not the shoe, which makes it the least ambiguous system.

Related Tools

More like this: all Unit Converters tools, all Converters tools or the TinySandy home page.