What Is a Double Bed Width?

A UK double bed width is 135cm, or 4ft 6in, and this guide explains why that single figure decides both how the bed sleeps and whether the room works. We look at what 67.5cm per person really means next to a 90cm single mattress, how much different frame constructions add to the external width, and why an upholstered double can occupy the same footprint as a slim king. There is detailed guidance on planning a room around 135cm, including walking space, drawer clearance and wardrobe door swing, plus when a 120cm small double or two linked singles is the better answer. We also cover ottoman and drawer storage bases, correct mattress fit, and a simple masking tape test that catches layout problems before you order....