luxury doors and specialized doors for commercial spaces Emerald Doors
Cromwell House, 421 Elland Road
Brighouse, West Yorkshire
HD6 2RG United Kingdom
01422 387331

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DOOR SIZE GUIDE

There are many different standard door sizes available in the UK and understanding the measurements can often become quite confusing. Emerald Doors offer a core selection of the most common door sizes from stock and if you have a non-standard size requirement. Here is a complete video on how to measure the door size.


UK Standard Door Sizes:

1981 x 457/533 x 35mm – door sizes tend to be most popular for use as cupboard or wardrobe doors.

1981 x 610/686 x 35mm – door sizes are used where the wall space may be restricted and a smaller door is required.

1981 x 762 x 35mm - often referred to as a 2’6” door is the most common internal door size in England and Wales.

1981 x 838 x 35mm – in most circumstances provides the required opening width for wheelchair access under the Part ‘M’ mobility requirements. You may also hear this door size being referred to as a 2’9”.


Metric Standard Door Sizes:

Metric sized internal doors are becoming increasingly popular and are most commonly used in Scotland and Europe. The main difference being an increased door height of 2040mm and door thickness of 40mm.

2040 x 526/626/726/826/926 x 40mm


Door Size Conversion Chart:

Metric (mm)

Imperial (inches)

Imperial (feet & inches)

1981 x 457

78″ x 18″

6′6″ x 1′6″

1981 x 533

78″ x 21″

6′6″ x 1′9″

1981 x 610

78″ x 24″

6′6″ x 2′0″

1981 x 686

78″ x 27″

6′6″ x 2′3″

1981 x 711

78″ x 28″

6′6″ x 2′4″

1981 x 762

78″ x 30″

6′6″ x 2′6″

1981 x 838

78″ x 33″

6′6″ x 2′9″


Metric (mm)

Imperial (inches)

Imperial (feet & inches)

1981 x 915

78″ x 36″

6′6″ x 3′0″

1981 x 1067

78″ x 42″

6′6″ x 3′6″

1981 x 1168

78″ x 46″

6′6″ x 3′10″

1981 x 1220

78″ x 48″

6′6″ x 4′0″

1981 x 1372

78″ x 54″

6′6″ x 4′6″

1981 x 1524

78″ x 60″

6′6″ x 5′0″

2032 x 813

80″ x 32″

6′8″ x 2′8″



Metric (mm)

Imperial (inches)

Imperial (feet & inches)

2134 x 915

84″ x 36″

7′0″ x 3′0″

2040 x 526

80 1⁄4″ x 20 11⁄16″

6′8 1⁄4″ x 1′8 11⁄16″

2040 x 626

80 1⁄4″ x 24 5⁄8″

6′8 1⁄4″ x 2′0 5⁄8″

2040 x 726

80 1⁄4″ x 28 5⁄8″

6′8 1⁄4″ x 2′4 5⁄8″

2040 x 826

80 1⁄4″ x 32 1⁄2″

6′8 1⁄4″ x 2′8 1⁄2″

2040 x 926

80 1⁄4″ x 36 7⁄16″

6′8 1⁄4″ x 3′0 7⁄16″


Internal Doors Size Guide:

Internal Doors are available in a variety of sizes, the standard door sizes consist of the following imperial sizes, 24"x78", 27"x78, 30"x78, 28"x78, 32"x80", 33"x78". Standard imperial sizes are usually 35mm thick. Metric sizes are also available within some of the ranges. Metric Door sizes are 626x2040, 726x2040,826x2040 and 926x2040mm. All metric sized doors are 40mm thick. Smaller door sizes are available with in the pine door range which usually feature a 3 panel design the smaller sizes are 15"x78", 18"x78", 21"x78".


Internal Standard Door Sizing UK:

  • 1981 x 457/533 x 35mm – door sizing usually most popular for wardrobe or cupboard door use 1981 x 610/686 x 35mm - door sizing used where there may be limited wall space and a small fitting door is needed.

  • 1981 x 762 x 35mm - often mentioned as a 2' 6" door is the most typical internal door sizing in England and Wales.

  • 1981 x 838 x 35mm - in most circumstances provides the necessary opening width for wheelchair access under the Part 'M' mobility specification. This door sizing is also known as a 2' 9".


Metric (mm)

Imperial (feet & inches)

Imperial (inches)

1981 x 305 6ft 6" x 1ft 78" x 12"
1981 x 381 6ft 6" x 1ft 3" 78" x 15"
1981 x 457 6ft 6" x 1ft 6" 78" x 18"
1981 x 533 6ft 6" x 1ft 9" 78" x 21"
1981 x 610 6ft 6" x 2ft 78" x 24"
1981 x 686 6ft 6" x 2ft 3" 78" x 27"
1981 x 711 6ft 6" x 2ft 4" 78" x 28"
1981 x 762 6ft 6" x 2ft 6" 78" x 30"
2032 x 813 6ft 8" x 2ft 8" 80" x 32"
1981 x 838 6ft 6" x 2ft 9" 78" x 33"
1981 x 864 6ft 6" x 2ft 10" 78" x 34"
1981 x 913 6ft 6" x 2ft 11.9" 78" x 35.9"
2040 x 526 6ft 8.3" x 1ft 8.7" 80.3" x 20.7"
2040 x 626 6ft 8.3" x 2ft 0.6" 80.3" x 24.6"
2040 x 726 6ft 8.3" x 2ft 4.6" 80.3" x 28.6"
2040 x 826 6ft 8.3" x 2ft 8.5" 80.3" x 32.5"
2040 x 926 6ft 8.3" x 3ft 0.5" 80.3" x 36.5"

External Doors Size Guide:

The most common standard door sizes for both imperial and metric External doors are 30"x78, 32"x80, 33"x78, 34"x82, 36"x84. All external doors are usually supplied 44mm thick.


Metric (mm)

Imperial (feet & inches)

Imperial (inches)

1981 x 686 6ft 6" x 2ft 3" 78" x 27"
1981 x 762 6ft 6" x 2ft 6" 78" x 30"
1981 x 838 6ft 6" x 2ft 9" 78" x 33"
1981 x 915 6ft 6" x 3ft 78" x 36"
2032 x 813 6ft 8" x 2ft 8" 80" x 32"
2040 x 726 6ft 8.3" x 2ft 4.6" 80.3" x 28.6"
2040 x 826 6ft 8.3" x 2ft 8.5" 80.3" x 32.5"
2040 x 926 6ft 8.3" x 3ft 0.5" 80.3" x 36.5"
2083 x 864 6ft 10" x 2ft 10" 82" x 34"
2134 x 915 7ft x 3ft 84" x 36"

External Door Thickness:

For external doors, you will often find a variety of different thicknesses listed, depending on the product type. Generally most external doors are 44mm - 54mm thick, however they can be up to 70mm when looking at some of the fully double glazed folding patio door sets. As with internal doors, thickness will be listed on each products page at the end of the size. For a guideline of interior door thicknesses you can use the following as a general rule of thumb;


External Doors: 44mm - 54mm thick.

External Fire Doors: 44mm - 54mm thick.

Garage Doors: 44mm thick.

French Patio Doors & Folding/Sliding Doors: 44mm - 70mm thick.


Garage Doors Size Guide:

Garage doors are available in the following sizes:


Metric (mm)

Imperial (feet & inches)

Imperial (inches)

1981 x 2134 6ft 6" x 7ft 78" x 84"
2134 x 2134 7ft x 7ft 84" x 84"

French Doors Size Guide:

French doors are supplied in a variety of sizes. Some ranges offer more size options then others. Internal French Doors are normally 35mm or 40mm thick and External French Doors are normally 44mm thickness. French doors are available in the following sizes, 36"x78", 42"x78", 46"x78", 48"x78", 54"x78", 60"x78". If a larger size is required such as a 66"x78" then two single doors can be used side by side with a pair maker.


Bespoke Fire Doors Size Guide:

Unlike standard internal doors, Bespoke Fire Doors are available in fewer sizes then the standard sizes. The most common Fire Door sizes are 27"x78", 30"x78", 33"x78", Occasionally a smaller size of 24"x78" is available. Metric size fire doors are also available within some of the ranges and there is usually the option of the following sizes to select from 626mm x 2040mm, 726mm x 2040mm, 626mm x 2040mm and 926mm x 2040mm, it is worth noting that although these are standard metric sizes, not all doors will be available in these sizes, whilst metric size doors are available not every range will offer all the metric sizes listed above.

Fire Doors cannot be trimmed down to fit an opening and if a bespoke size is required then there is an option to have Custom Made Fire Doors or Custom Made French Doors which you can manufactured to your exact specification.


FAQ:

  • What’s the average height of a internal door?

    Within England and Wales, the most common door height is 1981mm (6’6”) Scotland most commonly use a metric equivalent that is slightly taller at 2040mm


  • What’s the average width of a UK internal door?

    The average width of an internal door within England and Wales us 762mm (2’6”) Scotland usually opt for a metric equivalent that is slightly smaller at 726mm


  • How do I measure for a replacement internal door?

    Measure inside the door frame, across the width (top, middle and bottom) and take the widest measurement to determine the required door width.The same applies for the door height. Measure inside the vertical side of the frame and the longest length determines the height required.For more details, see How to measure for a new door


  • How wide is a standard UK internal door frame?

    The most common door frame width is 762mm in England /Wales and 726mm in Scotland to accommodate the most popular door sizes of the same size.Door frames can be supplied pre-assembled or in component parts which can be cut to size, to fit all door sizes.We would always advise using the services of a professional Joiner, as fitting a door frame is precise work and is trickier than it looks.


  • How do I measure for a double door?

    Start by measuring the opening size and divide the width by two to give an approximate width for each door. If the frame is not already fitted, you need to allow for this (most common frame width is 30mm both sides), as well as some tolerance for fitting (approximately 2-3mm each side).Opening width – Frame width (e.g. 60mm) – Fitting adjustment (6mm) = Double door width ÷ 2 = Single door width Compare the Single door width with the sizes available in your chosen design to determine whether a standard option will work or if you require bespoke made to measure doors. When fitting double doors, you also need to consider how you would like the doors to meet in the middle. E.g. square or rebated meeting stiles. See How to Create a Door Pair for more information.Fitting double doors is not straight forward and we would always advise using a professional Joiner to help you achieve the perfect fit.