EU to US Shoe Size Calculator

Convert an EU shoe size to its US equivalent using standard men's and women's size-chart offsets, with estimated foot length in centimeters and inches.

Quick Facts

EU scale
Paris-point system: 1 size ≈ 2/3 cm (6.67 mm) of length
EU size ≈ foot length (cm) × 1.5
US offset
US ≈ EU − 33 (men's) or EU − 31 (women's)
Women's US numbers run about 2 sizes higher than men's for the same foot length.

Your Results

Calculated
US size
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Converted US equivalent
UK size
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Approximate UK equivalent
Foot length (cm)
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Estimated from EU size
Foot length (in)
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Estimated from EU size

Ready

Enter an EU size and category, then press Calculate.

About the EU to US Shoe Size Calculator

This calculator converts a European (EU) shoe size into its approximate United States (US) equivalent for men's or women's footwear, and estimates the foot length behind that size. EU sizes come from the French "Paris point" stick system, where each whole size represents about 2/3 cm (6.67 mm) of the shoe's internal (last) length. US sizes use a different base — the Brannock scale — where each full size step is about 1/3 inch (8.5 mm). Because the two systems start from different units and every brand rounds slightly differently, an EU-to-US conversion is always a close estimate rather than an exact match.

The formula

This tool uses the standard offset relationships found on most shoe size charts:

  • Men's US size ≈ EU size − 33
  • Women's US size ≈ EU size − 31

The two-size gap between the men's and women's offsets reflects that, for the same physical foot length, women's US shoe sizing runs about two sizes higher in its number than men's US sizing. Results are rounded to the nearest half size, since that is the finest increment most shoes are sold in.

Estimating foot length and UK size

Because EU sizes are tied directly to length, this calculator also reverses the Paris-point relationship (EU size ≈ foot length in cm × 1.5) to estimate foot length: foot length (cm) ≈ EU size ÷ 1.5, converted to inches by dividing by 2.54. UK size is estimated from the converted US size using the commonly published offsets of US − 1 for men's and US − 2 for women's — again a close approximation, since UK and US sizes both step by about 1/3 inch but start counting from different base points.

Why sizes vary between brands

Even at the same foot length, one brand's "US 9" can fit differently than another's, because shoe lasts (the foot-shaped forms shoes are built on) differ in shape, width, and how much extra room is built in. Treat this calculator's output as a reliable starting point — typically within half a size of a brand's own chart — and check a specific brand's size guide or try shoes on when the fit really matters.

Frequently Asked Questions

How do I convert an EU shoe size to US?
Subtract 33 from the EU size for men's shoes, or 31 for women's shoes, then round to the nearest half size. For example, EU 42 converts to about US 9 for men's or US 11 for women's.
Why don't EU and US shoe sizes match exactly across brands?
EU sizes come from the French Paris-point system, where each size equals about 2/3 cm (6.67 mm) of the shoe's internal length, while US sizes step in about 1/3 inch (8.5 mm) increments on the Brannock scale. Because the two systems use different base units and manufacturers round differently, conversions are close estimates — sizes can vary by about half a size between brands.
How is foot length estimated from an EU size?
This calculator reverses the Paris-point relationship, where EU size ≈ foot length in centimeters × 1.5. So foot length (cm) ≈ EU size ÷ 1.5, and dividing that by 2.54 gives the estimated length in inches.
Is the conversion different for men's and women's sizing?
Yes. For the same foot length, women's US sizing numbers run about two sizes higher than men's US sizing. Since size charts already list EU sizes separately by gender, this calculator uses two offsets: EU − 33 for men's and EU − 31 for women's.

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