To understand a size chart you need to read the instructions listed on the brands’ web page, because different brands create their size charts differently.
- If the size chart shows the length/width of the insole then you take your foot length and add roughly 1.2cm to it (or whatever your preferred extra length is).
- If the size chart shows the dimensions of the “last” used to mold the shoe then you follow the above instructions.
- If the size chart shows the length of the foot that fits in each size then all you need to do is locate the size that is closest to your measurement (but not smaller than).
If there are no instructions for how to use the size chart, contact the brand for clarification. But in my experience, when it’s not stated, the size chart shows the internal dimensions of the shoe and not the foot that fits inside.
In general, you want the internal length to be approximately 1 cm longer than your longest toe, but depending on the shoe anywhere from .7cm to 2cm extra length could work (for example, in dress shoes I prefer less space in front of my toes, but in boots or shoes I wear socks with I like more length).
An accurate measurement is important for selecting a size. Learn how to measure your feet here.
