How many cups does 5lbs of sugar make?!

How many cups does 5lbs of sugar make?

I want to buy an airtight seal tupperware container, but need to know how many cups a 5lb bag of flour is equal to that, before I put the order in. Tired of those flour bugs, ya know what I mean?? lol

7 hours ago
I just measure a five lb bag, and it estimated about 18 cups. So, it's not 10 cups like everyone said. Then, I went to the tupperware website, and they actually have a measure scale set up for the exact measurements so people can get the correct containers. A five lb. bag of flour, will fill a 20 1/3 cup container. I amswered my own question. Thakns all!

Just an FYI... Weight oz's like the fact there are 80 oz's in a 5lb bag are not the same as volume oz's such as there are 8oz's in a cup. Theoretically there could be 8oz's(weight) in a cup it depends on the density of whatever is being measured. It could be lighter or heavier. Even different flours will have varying densities so you may get more or less cups depending. Your best bet is to measure a 5lb bag of whatever you are going to store and determine the area then find tupperware with similar volume.