According to an embodiment, an electronic device may include a display, a memory, and at least one processor operatively coupled to the display and the memory. The memory stores instructions that are configured to, when executed, enable the at least one processor to display first stroke data of a first stroke trajectory, based on an input of a first touch-move after a first touch-down on the display, perform shape recognition on the first stroke trajectory, based on a size of the first stroke trajectory and a distance between a stroke start point of the first stroke trajectory and another point on the first stroke trajectory, convert the first stroke data into second stroke data corresponding to a recognized shape form, based on the shape recognition, and display the second stroke data on the display. Various other embodiments may be possible.