Shoe Width Sizes Explained

Width is separate from length. Going up a size gives more length first; wide feet usually need a wider grade or a better last.

Key takeaways

Width is its own axis: D, 2E, 4E and 6E are not the same as simply adding length.
If the toes have length but the forefoot is squeezed, try a wide width or a different last before sizing up.
Measure both feet while standing, ideally late in the day when feet are at their largest.
After the formula, check the brand and model page because fit offset can move the final size by a half size or more.

Use this page as a decision aid before opening a brand or model guide. The formula gives the starting point; brand fit decides the final choice.

If you already know the brand, open its size guide and compare the fit verdict, width availability and source confidence before buying.

The practical rule is: Width is its own axis: D, 2E, 4E and 6E are not the same as simply adding length.