There is no definitive answer to this question because it can vary depending on the dimensions of the opening in which the door will be installed. That said, here are some common exterior door sizes: 30" x 80" 32" x 80" 36" x 80" 30" x 84" 32" x 84" 36" x 84".

There is no one-size-fits-all answer to this question, as the size of an exterior door will vary depending on the dimensions of the opening it is meant to fit. However, some general guidelines for exterior door sizes are as follows:A standard interior door measures 36 inches wide by 80 inches tall. Exterior doors may be a bit wider and taller to account for weatherproofing and insulation.Most exterior doors fall within the range of 38 to 48 inches wide, and 80 to 84 inches tall.The height of a door is measured from the finished floor (or threshold) up to the top of the door jamb.