How many boxes of cake mix do you need for different size cake pans?

The number of boxes of cake mix needed depends on the size of your cake pans. Generally, one box of cake mix makes about 4 to 5 cups of batter, which is sufficient for a 9-inch round or square pan. For larger pans, such as 12-inch or 10-inch rounds, you may need 2 boxes, while for a 9x13-inch pan, one box is usually adequate. Always check the specific instructions on the cake mix box for the best results.