Question: How big is an emperor bed or mattress in the UK?

Answer: a standard UK emperor size mattress is 215cm wide and 215cm long, or 7' by 7'.

We sell all sorts of emperor size bed frames, mattresses, bed linen, and bedding in this size - it is our most popular by far. We also make different length emperor beds and mattresses, so you can have the same width but 200cm (6'6), 205cm (6'9), or 220cm (7'3) long. Beware - some retailers sell Emperor Size as 6'6" by 6'6" (200cm by 200cm) - they may also call this 'small emperor'. Check the actual size of the bed linen you are buying before you commit to buy!

Width x Length	6’6” / 200cm	6’9” / 205cm	7’ /215cm	7’3” / 220cm
Single	3' x 6'6" 90 x 200 cm	3' x 6'9" 90 x 205 cm	3' x 7' 90 x 215 cm	3' x 7'3" 90 x 220cm
Prince	4' x 6'6" 120 x 200 cm	4' x 6'9" 120 x 205 cm	4' x 7' 120 x 215 cm	4' x 7'3" 120 x 220cm
King	5' x 6'6" 150 x 200 cms	4' x 6'9" 150 x 205 cm	4' x 7' 150 x 215 cm	4' x 7'3" 150 x 220cm
Super King	6' x 6'6" 180 x 200 cms	6' x 6'9" 180 x 205 cm	6' x 7' 180 x 215 cm	6' x 7'3" 180 x 220cm
Eastern King	6'6" x 6'6" 200 x 200 cms	6'6" x 6'9" 200 x 205 cm	6'6" x 7' 200 x 215 cm	6'6"" x 7'3" 200 x 220cm
Emperor	7' x 6'6" 215 x 200 cms	7' x 6'9" 215 x 205 cm	7' x 7' 215 x 215 cm	7' x 7'3" 215 x 220cm
Caesar	8' x 6'6" 245 x 200 cms	8' x 6'9" 245 x 205 cm	8' x 7' 245 x 215 cm	8' x 7'3" 245 x 220cm