If you wear a size 13 in jeans, roughly your waist size will be anywhere between a 31½ to a 33. A size 13 in jeans almost means that your hip size in generally in between a 43 to 44½. Some jean designs have different makes to them so always make sure to try jeans on before you buy them.
men's 31" waist size is equivalent to women's size 8 or 10 - pending the designer.
They don't go onto size 14 on UO to 10/12 with a 31 inch waist.
29 1/2 waist 36 hip 31 1/4 inseam
Size 10
For men's pants, the standard is to list the waist size first, then list the inseam. I have not found any pants, jeans, shorts, kilts, etc. that have violated this rule.
31. add 21 to 10
You would probably fall under the "plus size fashion" umbrella if your thighs are 34" around.
31
31
31
Are you asking what size waist does a women have if she wears a 7 or 8 size? Because I don't think anyone has a 7-8 inch waist. A women who wears a 7 would probably have a waist size of app. 29-31 inches