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.
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.
So, if you have a bedroom door that is 30″ wide (which is considered a 2/6 or 2′-6″ door) just add 2″ to the width and frame it 32″ wide.
Common widths for internal doors range from 520mm to 920mm, while external door widths often fall between 820mm to 920mm.
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.
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.
An exterior door is a door that leads from the outside of your home to the inside. 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.
Understanding Standard Door Sizes
The most typical standard door width is 36 inches, paired with a height of 80 inches. However, don't worry if your measurements differ — standard door sizes can range from: Width: 30 to 45 inches. Height: 71 to 96 inches.
Hinge Margin: Space between the door panel and door frame on the hinge side of the door. A standard hinge margin is 1/16", but can vary based upon the hinges used. Strike Margin: Space between the door panel and door frame on the strike, or handle, side of the door. The standard strike margin is 5/32".
Rough door opening sizes are standard among builders. The way this is determined is, take the desired pre-hung door size (door size not including the frame) and simply add 2" to the width and roughly 2.5" to the height. That's it.
This document states 'requirement M4(1) will be met when a new dwelling makes reasonable provision for most people, including wheelchair users, to approach and enter the dwelling' and that 'the door has a minimum clear opening width of 775mm' for principle communal entrances.
The most common door size in India is 7 ft (2.2 meters) in height and 3 ft (0.9 meters) in width. This size is suitable for most residential and commercial entrances. However, it is important to note that door sizes may vary depending on the specific requirements of the property.
The standard door width can vary, since there is a ton of variety in sizes and styles of doors. But the standard common door width for US homes is 36 inches. Other very easy-to-find sizes are 30 and 32 inches.
Add 10mm to the door height to get the reveal height. Add 48mm to the door height to get the overall height. Subtract 30mm from the reveal width to get the clear opening width. Subtract 15mm from the reveal height to get the clear opening height.
For a single pocket door, the rough opening is door width X 2 + 1" (in your case 97"). For double pocket doors (both doors the same size) the rough opening is door width X 4 (in your case 192"). For both rough opening heights, add at least 2 ¼" to the door height; but 2 ½" is better.
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.
A common rule of thumb is to add about 2 inches to the width and 2 1/2 inches to the height of the actual door size to determine the rough opening size. So, for a 30-inch door: The rough opening width would be approximately 32 inches. The rough opening height would be approximately 82 1/2 inches.
Standard Door Frame Dimensions
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)
Standard Size for Exterior Doors
The standard size for an exterior door is 80 inches by 36 inches which is 6 ft, 8 inches by 3 ft.
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).
For a Single door, the rough opening should be 2-1/2 inches wider and 2 inches taller than the nominal dimensions of the door slab you measured earlier. Example: If you have a 36 x 80 door, your rough opening should be 38-1/2" wide x 82" tall.