What Is the Size of a Normal Double Bed?

A normal double bed measures 135cm wide by 190cm long, which is 4ft 6in by 6ft 3in, and that has been the standard British double for decades. The mattress follows those dimensions while the frame adds a little more, so the floor space needed is always a few centimetres greater than the size name implies. This guide sets the double in context against singles, small doubles, kings and super kings, then explains the room dimensions that make it comfortable rather than merely possible. We look at choosing a frame that suits the space, mattress tension and fitted sheet depth, and storage that still functions when the bed fills most of the floor. There is a section on the measuring mistakes that cause the most problems, from ignoring external frame width to forgetting the turn at the top of the stairs, plus guidance on when to size up or down. Read it before ordering a double frame....