When it says 1 cup of Rice, it is uncooked Rice. You can buy Cup Measurements from the shop such as 1 cup, 3/4 cup, 1/2 cup etc..I have those cup measurements in my kitchen at home and work.
I think most diets use cooked measurement, 1 cup uncooked is a lot of carbs (about 120g).
1 cup uncooked can be up to 3 cups cooked if you prepare it the usual way with 2 parts water to one part rice - give or take. I think most diets use cooked measurement, 1 cup uncooked is a lot of carbs (about 120g).