Door Sizes

Door Sizes: Standard Sizes, Types, and How To Measure

Apart from giving entry, doors contribute to the physical look of the house and its monetary value. A house without doors is unsafe. Crawling, flying insects, and even burglars may attack. Do you want to buy new doors for your house and are unsure of the dimensions of different doors?

Door sizes vary depending on the door type, purpose, and location. A standard interior door is 80″ x 36″, while the exterior is 80″ x 42″. The standard height of a door is 80 inches (6’6″). Although a door’s width may differ, standard doors are 36 inches or 3 feet wide.

If you want to know more about the sizes of different kinds of doors and their locations, keep reading this blog.

door sizes


What Are Standard Door Sizes?

The size of an interior door is 80 inches by 36 inches. Standard doors are the doors in your house; their primary role is to promote your privacy and security. You must get door sizes that fit your type of frame. Otherwise, you may get a door that is too low or high for your doorway. 

The standard door sizes of interior and exterior doors vary. Single, double, french, closet and sliding glass doors also have different sizes. Below are the standard sizes of the various types of doors.

1. Interior Doors

An interior door should be 80 inches tall (6’6″) and 36 inches (3ft) wide. You can also find interior doors that are 30 and 32 inches. If you are looking for the standard total size of the door, including the door frame, the size will be 82 inches by 40 inches. 

The left and right jamb of the door are 2 inches each, while the head jamb is 2 inches. Interior door sizes can vary depending on what will pass through the door. Ensure you check the door frame size before placing an order for a door.

2. Exterior Doors

The standard size of exterior doors is 80 inches by 36 inches with a thickness of 1 ¾ inch. The standard size is not the only size you can find an exterior door. Although 80 inches is the most common height, you can find an exterior door that is 84, 96, and 109 inches tall.

The varying height may depend on taste and usage. Exterior doors also come in 30, 32, 36, 42, and 48 inches wide, based on the door type. 

Are All UK Doors The Same Size?

All UK doors have different sizes. However, most doors will have a common size of 1981 x 762 x 35mm; this is a standard door size for England and Wales, also known as 2ft by 6 inches. Scotland has a smaller door width which measures 28.5 inches – 726 mm. 

Other UK door sizes are:

1981 x 838 x 35mm: Also known as 2′ 9″, this is a door specification for people who use a wheelchair. This door size is meant to be wide enough for wheelchair passage.

1981 x 610/686 x 35mm: Houses with insufficient wall space will buy this door size. A small door is suitable for this door size. 

1981 x 457/533 x 35mm: This door size is commonly used for wardrobes and cupboards.  

How Tall Is A Standard Exterior Door?

The standard height of an exterior door is 80 inches or 6ft x 6 inches. Although the heights of exterior doors may vary, they should not be at least 80 inches. Exterior doors may also be 96 and 109 inches tall, depending on usage and customization. Garage doors may be taller and wider than standard door sizes. 

What Is The Standard Door Size For Residential Homes?

The standard door size for residential homes is 80″ x 36″, equivalent to 6ft by 6 inches. House owners can customize their door size based on the door type and location. Below is a list of door sizes for residential homes. 

Interior Doors: The standard size for interior doors is 80 inches by 36 inches. The door width may be less or more, depending on the wall space, but the height should be up to 80 inches. 

Exterior Doors: Exterior doors are often 80 inches tall and 36 inches wide. House owners can build their exterior doors to any size of their choice. Some exterior doors may be smaller than the standard size. They can also be in this size 80 inches x 24 inches. 

Closet Doors: Closet doors are usually not wide, although their sizes vary. The most common size is 80 x 30 inches. They can also come in 80 x 28 inches and 80 by 32 inches. 

French Doors: French doors are contemporary doors with beautiful designs and styles. They are often sold in pairs, and you will find them in varying widths. The standard of a French door is 6ft 6 inches x 3ft. The door is not limited to these sizes alone. However, consider the door frame and swinging space before measuring the door. 

Garage Doors: Garage doors vary in size. But the standard size of a garage door is 7 feet by 6 feet. Some may be 8 feet by 7 feet wide. Garage doors should be tall and wide enough to allow for ventilation and light. If you want to add windows to your garage doors in the future, the door size has to be tall enough for the changes. 

Sliding Glass Doors: Sliding glass doors are contemporary doors; they are often used as an entry to patios, offices, or homes. The standard dimension of a sliding glass door is 80 feet by 36 inches. You can customize the width of the door. You must also consider the available opening space before placing an order. 

Commercial Doors: Commercial doors are found in business buildings and offices. They are often thicker and sturdier than residential doors; they have unique features that enable them to withstand external attacks. A typical commercial door is 80 by 36 inches. You can get them in many other sizes.

How To Measure Door Sizes

Measuring a door size is a simple task. However, you must measure the door correctly in case you want a replacement in the future. The width and length of the door are the most important measurements you are taking for your door. With a measuring tape, you can measure your door size accurately. 

You need basic knowledge of mathematics, measuring tape, and pen and paper. Below are the steps to measuring a door.

Step 1: Measure The height Of The Door

To measure the height of your door, you need an assistant to keep the tape in place and a stool so that you can reach the top of the door. Run a measuring tape from the base of the door to the top. Most doors are usually 80 inches (200 cm). 

Write down the number you have gotten from the measurement. For accuracy, measure both heights of the door. 

Step 2: Measure The Width Of The Door

Place a measuring tape from one door’s end to the other to measure the door’s width. Standard door widths are 30, 32, and 36 inches. A door’s width at different points may vary; you must run the tape at different points. If there are varying figures, pick the largest among them. Ensure to record the measurement. 

Step 3: Measure The Thickness Of The Door

Place the tape at the edge of the door and measure from end to end. A standard door thickness is 1.75 inches. Ensure to write down your measurements. You can also measure the door jamb; its figure is always the same as the edge of the door.  

Step 4: Measure The Height And WIdth Of The Door Frame

Although optional, place the tape at the door’s frame space and write down the measurement of the height and width. This measurement is to help you pick the correct replacement for your door.

Frequently Asked Questions

What Is The Standard Door Size In CM? 

The standard door size in cm is 203.2 x 91.44 cm, the same as 80 x 36 inches. House owners can build their space to the size they choose, depending on the acceptable door size of their region.

What Is The Average Internal Width Of A UK Door?

In the UK, the average size of an internal door is 762mm or 30 inches. This dimension is very common in Wales and England. In Scotland, however, they prefer a smaller dimension of 726mm. 

What Is The Standard Door Size In Meters?

The standard door size in Meters is 2.03 x 0.91. The standard door sizes for interior doors in meters are 0.7 to 0.9 in height and 2.0 to 2.1 meters in width.


The standard size of a door is 80 inches by 36 inches. Before buying a door, you must correctly measure the height and width of the door so that the door will fit. As a homeowner, your door sizes should be able to fit your doorway. However, the height of your door should be at least 80 inches.  

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