There are a number of story point scales used for estimating user stories on the product backlog. An effective scale to use for your estimation is T-Shirt sizes. T-SHIRT SIZES Size                                    Points to Allocate XS (Extra Small)                   1 S  (small)                                2 M  (medium)                         4 L  (Large)                               8 XL (extra large)                   16 XXL(extra extra large)