How big is a super king size mattress?

A SUPER KING size mattress is a really big mattress. Its the biggest ‘standard’ size mattress you can get. You can get a bigger mattress size if you get a custom mattress. In the US, you may be looking for a ‘California King’ Mattress. Sizes for the US and UK are listed below.

UK Mattress Sizes:

  • Super King mattress size:
    • 180cm x 200cm
    • 1.8m x 2m
    • 71 inches x 78 inches
    • 6 feet x 6.6 feet

US Mattress Sizes:

  • California King mattress size:
    • 183cm x 213cm
    • 1.83m x 2.13m
    • 72 inches x 84 inches
    • 6 feet x 7 feet