how big is a king size mattress dimensions
Like other kinds of mattress sizes, a âkingâ will vary. The standard king size measures 76â x 80â, but a king size mattress in the UK is roughly the same size as an American queen size mattress. Then there is the California King mattress which is 72â x 84â. In the UK there is also a âsuper king sizeâ mattress, which measures about 72â x 78â.