So you’re in the market for a new mattress and interested in pursuing your options. It’s time to consider an upgrade. There are so many sizes of beds and several names that it can be overwhelming to make a choice, along with all of the other factors to consider.

Because of their luxurious nature, one of the more popular customer considerations is between a California King Bed and King Bed. But before you start swiping your credit card, it’s helpful to know the difference between these types of mattresses.

It’s a common misconception that a California King Bed is larger than a King Bed, but that’s not necessarily the case. So what exactly is the difference between the two?

California King vs. King: A Comparison Chart

Dimensions California King Size Bed King Size Bed
Width 72 inches (6 feet) 76 inches (6 feet, 3 inches)
Length 84 inches (7 feet) 80 inches (6 feet, 6 inches)
Surface Area 6,048 square inches 6,080 square inches
Recommended room size 12’ x 12’ – 14’ x 12’ 10’ x 12’ – 12’ x 13’

Basically, California king mattresses are longer, but 4 inches narrower than the King mattress. A standard king size bed has a larger surface area.

Feet of father, mother and four children in colorful knitted socks on white bed

Which One Should I Buy?


Ultimately, both a California King size and king-size bed are worthy, spacious and comfortable choices. So the final decision will really be based on your personal preference, body size, room dimensions and budget. But you can’t go wrong with either one!