Abstract: A digital ring sizing device includes a cylinder removably positioned directly about the selected user finger, and a mechanism for determining a ring size of the selected user finger. The ring size determining mechanism is housed within an interior of the cylinder and connected directly thereto. A mechanism visually displays the determined ring size of the selected user finger, and is directly connected to an outer surface of the cylinder and further is electrically coupled to the ring size determining mechanism. The ring size of the user is automatically displayed in numeric characters by the visual displaying mechanism after the ring size determining mechanism calculates the ring size of the selected user finger.