Trying to find shoes that fit your feet can be quite the challenge. Shoe sizing can vary from country to country, even from brand to brand. Some of the biggest shoe companies have their own sizing charts. Measuring your feet and using shoe size converters is the best way to ensure you are getting the right shoe for your foot.
Shoe size conversion tables have been created based on ISO specifications for converting between different shoe sizing systems. It is important to note, however, that the conversion formulas used are only approximate. This is because shoe sizing systems are not fully standardized, and the sizes differ slightly between manufacturers, even in countries that use the same continental European system for making shoes (e.g., US and UK).
The ISO specification that is the basis for this calculator is called “ISO/TS 19407:2015 Footwear — Sizing — Conversion of sizing systems.” This technical standard is available on the ISO website.
The table is based on a method of converting the foot length to shoe sizes for all major sizing systems, including the Euro shoe size system and the Mondopoint system with length steps of 5 mm and 7.5 mm, as well as the UK 1/3-inch system. It also includes a calculation for children’s shoe sizes. The calculations are rounded to the nearest full shoe size and are explained in detail at the “info” buttons. A Brannock device is a special type of measuring tool that can also measure the width of your foot, which can be a factor in finding shoes that will fit well.shoe size converter