The most common exterior door size is 3 feet wide and 6 feet 8 inches tall. However, there are also slightly smaller doors called 2/3 doors, which are 2 feet 6 inches wide and 6 feet 8 inches tall.
The standard size for an exterior door is 80 inches by 36 inches which is 6 ft, 8 inches by 3 ft. 96 inches or 8 ft. is now very common for newer homes and stock exterior doors are also commonly available in 30 and 32-inch widths.
Small internal doors will typically be 762mm x 1981mm, while large internal doors can be as big as 926mm x 2040mm. There are even narrow door widths that are only 457mm wide, but these are very rare.
For example, a nominal door size of 36 inches would fit into a rough opening 36 inches wide. The actual size of the door slab may be slightly smaller than the nominal size, typically by about 3/4 inch on each side, allowing for clearance around the door to ensure it can open and close smoothly.
Standard entry door measurements: Height: 80 inches (6 feet 8 inches) Thickness: 1 3/4 inches. Width: 36 inches standard (30 and 32inches also available)
Advantages of Fiberglass Doors
They don't chip or dent like a wood or steel door might, which makes them a great option for your front door — the barrier between your home and the outside world. In general, a fiberglass door will outlast both a wood and a steel door because of its composite construction.
Common rough opening widths are 38.5” and 34.5.” And common heights are 82.5” and 98.5,” but rough opening sizes can vary. It's important that you measure down to the fraction of an inch and write down the smallest dimension of your rough opening. This will ensure the new door fits in your home.
A rough opening is the space in your wall where the door will be installed, and it needs to be larger than the actual door itself to accommodate the door frame, shims, and any necessary adjustments. For a standard 36-inch exterior door, the rough opening should typically be 38 inches wide and 82.5 inches tall.
The Americans with Disabilities Act (ADA) states that doors should be a minimum of 36 inches wide. While residential doors generally don't need to comply with this standard, some do anyway — especially newer homes built with older adults and individuals with mobility concerns in mind.
average door width is 36 inches, and the average door height is 80 inches. When creating accessible doors by ADA building codes, the door opening's clear width is required to be at least 32 inches and with a maximum width of 48 inches.
Standard door width in 2023 — Standard (and most common) interior door widths in American homes are 30, 32, 34, and 36". These width dimensions have not changed as much the height. American interior doors are usually available in increments of 2", giving you a range of typical door widths of 28", 30", 32", 34", 36".
For instance, the most common internal door dimensions are 1981 x 762 x 35mm. This is commonly known as a 2' by 6' door because the dimensions are approximately 6 by 2 feet in imperial measurements.
The standard bedroom door size is usually 32 inches wide and 80 inches tall. The typical thickness is 1 3/8 inches. These dimensions provide enough room for most people to use the doorway without hitting their heads or brushing the sides of the frame.
A well fitted door should have a 2mm gap on either side and at the top. The gap at the bottom will depend on the thickness of your flooring/carpet. Plane the door as required, using an electric plane will help you get an even finish, and sand for a smooth finish.
The standard door measurements of an interior door are 80 inches by 36 inches. And the typical door width should be at least 24 inches, while the height should be 80 inches.
For most interior rooms, a door that's 80 inches tall and 30 inches wide tends to hit the mark. It's the classic 'straight-leg' of door sizes—versatile and commonly used.
The standard interior door width is 28 to 32 inches. Other sizes include 24 and 36 inches (the latter size is the optimal width to accommodate a person with disabilities).
“Rough opening” refers to the rough or unfinished opening for the door, jamb, and threshold.
Common widths for internal doors range from 520mm to 920mm, while external door widths often fall between 820mm to 920mm.
The nomenclature of doors is as follows: the width is specified by 2 or 3 numbers that indicate the feet and inches of the door a 2-0 [written 20] is 2'-0" wide or 24" wide, a 2-6 [written 26] is 2'-6" wide or 30" wide, a 2-10 [written 210] is 2'-10" wide or 34" wide.
A typical header width with single jack studs is cut 3″ larger than the rough opening. An example: A 36″ door has a rough opening width of 38″ so your header is cut at 41″. Also, be aware double or triple jack studs may be required based on the opening width and the load the header carries.