Understanding the Shoe Size Converter
A shoe size converter translates footwear sizes between US, UK, European and centimeter systems so online shoe shopping across brands and countries actually fits. Shoe sizing is even more inconsistent than clothing, varying by region, brand and even shoe style. The converter gives a reliable cross-reference, and pairing it with your foot length in centimeters is the surest way to order the right size.
The systems and how they relate
US and UK sizes differ by roughly half a size for the same shoe, while European sizes use a larger numeric scale, and some brands list the insole length in centimeters (the Mondopoint system). Because the increments differ, converting by formula is approximate. Knowing your size in several systems helps, but foot length is the only truly portable measurement.
Measure your foot for accuracy
The most reliable method is to measure your foot length in centimeters in the late afternoon, when feet are slightly larger, and compare to the brand’s chart. Width matters too — some brands run narrow or wide. Using the converter to get into the right range and then confirming against foot length and width minimizes returns when buying shoes you cannot try on.
Tips & things to know
- •Measure foot length in centimeters — it is the most reliable cross-brand measurement.
- •Measure late in the day when feet are at their largest.
- •US and UK sizes differ by about half a size for the same shoe.