How many cups of batter does a box mix make?

That is a great question.  The amount of batter our Supermoist cake mixes yield will depend on the flavor.  The range is 4 to 4 1/2 cups of batter.  For example, our White and Vanilla cake mixes yield 4 cups of batter.  The Yellow, French Vanilla, Golden Vanilla, Butter Pecan, Spice, and Milk Chocolate will yield 4 1/4 cups, while the Devil's Food, Chocolate Fudge, German Chocolate, Triple Chocolate Fudge, and Dark Chocolate will yield 4 1/2 cups of batter.  I hope this is helpful to you.  Happy baking!