How many pounds of grapes are needed to make a gallon of white wine?

After doing some research, I discovered that it takes about 2.6 pounds of grapes to make a single bottle of red wine, which equals out to about 8.5 pounds per gallon. This number can change depending on the size of the grapes and the desired level of sweetness/tannins in the white wine. https://thumbpower.org/?p=2209