You will around 5 quarts. Or to make it easier to put together. You will need 7 lbs of ground meat. 10 large cans of Chili beans. (they are pinto beans already seasoned) I. 3 lbs of onions and 3 Small Jr's of tomato sauce. This will make enough to feed 40 people. Of course if you want to buy chili you can you will want 3 #10 cans. They sell these at Smart n final or other restaurant supply stores.