There is an awesome website that will help you calculate a plan for your toilet paper usage! Based on what you already have it will give you an estimate on how long it will last. I'm not sure how accurate it is, but it may be fun to test out! The online calculator simply requires you to enter the number of rolls you currently have and the average number of toilet visits per day your household performs. How Much Toilet Paper? will then determine how long your supply will last YOU CAN CLICK HERE TO START