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What size is a Super King mattress in the UK?
In short
A UK Super King mattress is typically 180 cm wide by 200 cm long (about 6 ft × 6 ft 6 in). That is roughly two UK Singles side by side in width, with King-length depth.
More detail
Super King suits couples who want near-Single width each. It needs a larger room than King. Emperor sizes (often ~200 × 200 cm) sit above Super King and are non-standard marketing sizes.
Related searches: super king size cm · super king mattress dimensions
Updated 2026-08-03. All answers