All online turf orders are sold by the linear foot. Some rolls are 12.5’ wide, so a quantity of 10 would be 10’ by 12.5’ = 125sf. Some rolls are 15’ wide. Please check the product description for roll width, click "Add to Cart” where you will then update the quantity to the roll length desired. If you have any questions about roll size, ordering or figuring out how many feet you need, please call 888-SYN-TURF ext. 3