What is the actual size of a 36x80 door?

A standard 36x80 door measures 36 inches in width and 80 inches in height. However, the actual size may be slightly smaller to accommodate for frame and hardware allowances, typically measuring around 35.75 inches wide and 79.75 inches tall. Additionally, when installed, the door may require space for hinges and a frame, which can affect the overall dimensions.