Your queen mattress is only 60 inches wide but it is also 80 inches long.
Can you fit a king mattress on a california king frame.
A king bed frame holds a mattress that is 76 inches wide and 80 inches long.
These two mattresses differ in their dimensions.
You can easily spot the difference because it is longer and narrower than a king sized bed.
California king sized bed frames typically measure 72 inches wide and 83 5 inches in length.
This is the difference between a regular and a california king so a king size headboard would be 2 wider on each side but should work.
A regular king sized mattress is 76 wide and 80 long while the california king is 72 wide and 84 long.
Filling the bed frame if your king size bed frame is a headboard with a metal rails type of bed frame then you can accommodate the larger mattress by replacing the king size rails with longer.
It is perfect for those who think that 78 8 inches width of a king bed is too much.
The frame will hold your bed since it s bigger but some of the frame will be sticking out.
The key to making this work is to make it look like it s intentional by turning it into a platform bed.