An electronic device is provided. The electronic device includes a display including a sensing panel that senses a handwriting input, at least one processor operatively connected to the display, and memory storing instructions that, when executed by the at least one processor, cause the electronic device to acquire the handwriting input through the display, wherein the handwriting input includes a first handwriting input corresponding to a first line and a second handwriting input corresponding to a second line, determine whether to merge the second line into the first line or to maintain the second line based on whether at least one of the first handwriting input and/or the second handwriting input satisfies a specified condition, convert the handwriting input where the merging or the maintenance of the second line is applied into text, and display the converted text through the display.