how much is 6 cups to pounds....

That depends upon whether you're measuring something heavy, like lead pellets, or light, like feathers.

Volume measures (cups) don't have equivalent weight (pounds) measurements.

If you're measuring a food (apples, peaches, flour, sugar, etc.) for a recipe, you'll need to guess how many pounds you'll need to make six cups. Sometimes food packages give the volume on the label.