Whether you are a self-builder, niche housebuilder or developer of unique apartments, making sense of the different standard size doors available for your project can often be confusing. We hope using the door size conversion guide on this page will assist in selecting the most relevant door size for each location and maybe even inspire some unique sizing possibilities during the design process.
Standard door sizes in the UK can be divided into two main categories, Imperial or Metric. A typical ‘Imperial’ door size used in most high-end residential properties is 33 x 78 inches and often in the industry, we refer to this imperial standard using millimetres 838 x 1981. For newer buildings, it is becoming increasingly popular to use ‘Metric’ standards where door widths increase in 100mm increments i.e. 626, 726, 826 x 2040 high, a list of these standards are listed below.
Doorsan produces every interior door to order, meaning you are not restricted by the standards shown below and each door can be created to any custom or odd size that you desire.
Quickly turn millimetres to inches and vice versa, using this online measurment convertor.