Door Size Advice

Door Size Conversion Chart: Inches to Millimetres and More

Working with different measurements when choosing the right doors for your home can be a real headache. To make life easier, the team at Green Doors has put together a super simple door size conversion chart.

Just scan the chart for your measurements in inches or millimetres and find the conversion in seconds. If you’re still struggling or need more help, just give our friendly team a call on 01582 34 35 34.

We’ve made finding the right size door for your property easy with our simple search by size tool – just enter your required measurements in either mm, cm, inches or ft, and browse a selection of perfectly sized doors.

Why is it Important to Check Door Size?

Ever heard the old saying “measure twice, cut once”? That mindset is useful when it comes to doors too. Not checking door sizes before you buy can leave you with a door that doesn’t fit properly.

Even if you manage to shoehorn it in, it’s likely to rub, squeak or scratch against the frame. Make sure to carefully measure and re-measure your opening in order to find the right size door and frame.

Door Size Conversion Chart

To help you easily convert imperial door sizes to their metric equivalents, we’ve put together this simple chart with some of the most common door sizes. If you’re unsure about the sizes you’re dealing with, contact our team for a little extra guidance.

Front and Back Door Size Conversion Chart

Imperial (ft and inches)	Imperial (inches)	Metric (mm)
6’6″ x 2’3″	78″ x 27″	1981 x 686mm
6’6″ x 2’6″	78″ x 30″	1981 x 762mm
6’8″ x 2’8″	80″ x 32″	2032 x 813mm
6’6″ x 2’9″	78″ x 33″	1981 x 838mm
6’10” x 2’10”	82″ x 34″	2083 x 864mm
6’6″ x 3’0″	78″ x 36″	1981 x 915mm
7’0″ x 3’0″	84″ x 36″	2134 x 915mm

These are just some of the most common sizes. Measurements for other doors such as bi-fold doors, sliding doors and French doors will all vary.

Find the Perfect Door for Your Home at Green Doors

As well as our handy door size conversion chart, we’ve also added a search by size feature to our website. Now you can search by opening size in mm, cm, inches and ft. Find perfectly sized, front doors, back doors, French doors, sliding doors, bi-fold doors and even windows in no time.

At Green Doors, we help customers find high quality new and used doors at great prices. We work to rescue used doors from going to landfills, helping them find new homes and protecting the environment one door at a time. We also stock brand-new doors, with small blemishes, that were not fit for their intended project. For more information, just reach out to our friendly team. Call us on 01582 34 35 34, email us at sales@greendoors.co.uk, or fill out our contact form.

Door Size Conversion Chart FAQs

What are standard door sizes in the UK?

Standard door sizes in the UK vary. In England and Wales, the standard size is 1981 mm x 762 mm. In Scotland, the standard is 2040 mm x 726 mm. However, for disabled access in the UK, doors must be a minimum of 750 mm wide.

What size is a 762 door?

A 762 door, otherwise known as a 2’ by 6’, is 762 mm (30 inches) wide and usually 1981 mm (78 inches) tall.

How do you work out door size?

To work out which size door you need, you need to measure the opening, so take a tape measure and collect the following measurements:

– Width – measure the width of your door opening
– Height – measure the height of your door opening

Once you have these two measurements, you’ll be able to purchase the right size door and frame.

Which external door thicknesses are available?

For security and insulation, external doors are usually thicker than internal doors. Standard thickness of doors is 4.4cm, and anything larger than this is considered to be higher quality and more secure.