I think I have a California king bed frame. Can I put a regular king mattress on it?


If you have a metal, adjustable bed frame, you should be able to use a Cal king or Eastern king mattress (and in some cases, a queen will even work).

However, if you do not have an adjustable frame, a Cal king bed frame needs a Cal king mattress. Cal king bed frames are longer and not as wide, so using a king mattress will cause sagging on the ends, which will end up damaging the mattress.

Updated on December 21, 2017

Original Article:

King vs. California King Mattress Size
By Robin Edmondson