1 lb powdered sugar = 3-3/4 c powdered sugar
1 c powdered sugar = 1 c white sugar + 1 tsp cornstarch, combine in a blender and finely grind
1 c white sugar = 1/2 c honey, but see sugar to honey for additional considerations replacing sugar with honey.
1 lb brown sugar = 2-1/4 c brown sugar
1 c light brown sugar = 1 c white sugar + 2 T molasses
1 c dark brown sugar = 1 c white sugar + 4 T molasses