All measurements are approximate. The exact amount of beans you receive from a can or a bag of dried beans depends on the size of bean. Large beans will be on the low side of these measurements while small beans will have a slightly higher yield.
1 cup dried beans = 2-3 cups cooked beans = 1 ½ 15.5 ounce cans
One 15.5 ounce can of beans = 1 ½ cups cooked = ¾-to-1 cup dried
1 lbs. of dried beans = 2-2 ½ cups dried = 4-5 cups cooked = 3-4 15.5 oz. cans