It is important to note that nail measurements are not necessarily 1:1. Even though you're nail may measure 13 mm from side to side, some nail shapes, which are very curved, even though they measure 13 mm, they may FEEL too tight, requiring you to size up. This is why a fit kit is the most accurate way to find your nail size.
Measurements can assist in determining your "nail size numbers" for each unique shape. Keep in mind that sizes & measurements vary across nail shapes. You might be a size 5 in one shape but a size 4 in another.
It is also important to note that *nail measurements are NOT necessarily 1:1. Even though you're nail may measure 13 mm from side to side, some nail shapes, which are very curved, even though they measure 13 mm, they may FEEL too tight, requiring you to size up. This is why a fit kit is the most accurate way to find your nail size.
