Door Size Guide
Everything You Need To Know
Measuring your doors correctly is essential but getting it right the first time round will save you time and money, so we've got the info to make sure you can get it done easily! Why not check out our guide to taking the measurements of your door openings. With so many different sizes to choose from, selecting the right size can be a minefield. Check out our size chart to see the different measurements in both metric and imperial sizes. Please note that we don't stock every door in all the shown sizes, but you can filter our doors by size on the category pages.
Popular Standard Door Sizes
1981 x 457/533 x 35mm -- This door size is perfect for cupboard and wardrobe doors
1981 x 610/686 x 35mm -- A great choice for slightly more narrow door openings
1981 x 762 x 35mm -- The most common and popular internal door size AKA a 2'6" door!
1981 x 838 x 35mm -- The most popular choice for wheelchair access AKA a 2'9" door.
Popular Metric Standard Door Sizes
Metric sizes are becoming more and more common, used predominantly in Europe and Scotland, these door sizes are gaining popularity!
2040 x 562 x 40mm
2040 x 626 x 40mm
2040 x 726 x 40mm
2040 x 826 x 40mm
2040 x 926 x 40mm
Fire Door Sizes
Most standard UK and metric door sizes are available as a fire door alternative with the only difference being an increased door thickness of 45mm. Again, not all door sizes shown in the chart are available as fire doors, nor do we supply fire doors in every style, but we're confident you'll be able to find what you're looking for in our collection. When fitting your fire doors, ensure that all the relevant accessories, fixtures and fittings are also fire-rated, to guarantee that your doors comply with building regulations.
Size Chart
Our size chart shows you the conversions of door sizes in different units, including Metric (mm), Imperial (inches) & Imperial (feet & inches), so you don't have to work on converting them yourself!
| HEIGHT & WIDTH | Metric (mm) | Imperial (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" |
| 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" |
| 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" |
How To Measure Your Doors
Whilst most door openings will be suitable for the standard door sizes that we offer, if you do have slightly more obscure measurements, many of our doors can be offered in bespoke sizes. Take a look at our graphic below for a how-to on measuring your existing doors if you're replacing them. Although if you are not confident that your current doors fit perfectly, it may be better to take a frame to frame measurement instead. Remember that a lot of our doors come with substantial trimming allowances, offering a small margin for error, but do make sure you check this as it varies from door to door.
Step 1 - Height
Take 3 measurements from top to bottom across the front of your door (labelled H1, H2 & h2 in the image below). The largest measurement you take should be the one that you use, it's always better too have too much and trim a bit off, rather than not have enough!
Step 2 - Width
Take 3 measurements from left to right across the front of your door (labelled W1, W2 & W3 in the image below).
Step 3 - Thickness
Take 3 measurements from the front to the back of the door to measure the thickness. Take these measurements from the top, middle and bottom of the door. You should also measure the rebate in the frame, where the door sits when closed, as this will include the gap from between your door and the frame. Your door thickness should be either 35mm or 40mm thick for a standard door and 45mm for a fire door. If your measurements don't come close to one of these three sizes, you should measure again to check!
No Doors? Measure The Door Opening Instead
If you already have a door frame in place, the measure you need to take is a frame to frame measurement. This would be done by taking a measurement from the inside of the frame on one side to the opposite side. You should then repeat this for the height and depth, remembering to take the measurement in three different places each time. If you do not have a frame in place, the measurement you'll need to take is called a brick to brick measurement. For this, you should repeat the frame to frame process, except by measuring from wall to wall.
