California King vs. King

The difference between California King and King

Mattress size are denoted by twin, full, double, queen, king and California King. You may think that a king-sized mattress is of one size, but that is not the case with the two sizes – King and California King. The California King mattress is designed for those who are taller and the King mattress is designed for those who are bigger.

A California King mattress is narrower than a King, but is longer to accommodate the extra height. The length of this mattress is the same as the Western King with an extra four inches, but the four inches are deducted from the width. This means that the surface area of a King mattress is larger than that of a California King.  A King mattress measures 72 inches wide by 84 inches long. A California King mattress measures 76 inches wide by 80 inches long.

There may be slight differences in the measurements of mattresses made by different manufacturers. You should not take it for granted that all mattresses of these names are the same size, which means you should always ask at the showroom.

The Standard King size mattress can also be known as the Eastern King. There are several other names for the California King – Western King, Cal King, West Coast King and WC King


The following table illustrates the differences in the dimensions of the California King mattress and the King mattress:

Dimension California King King
Length 84 inches2.13 meters 80 inches2.03 meters
Width 72 inches1.83 meters 76 inches1.93 meters
Surface Area 6048 square feet3.9 square meters 6080 square feet3.92 square meters



  • Neil Stu

    Selecting the perfect mattress for you can be very confusing. Doing the right research will allow you to find the best memory foam mattress. I recently bought a comfortable California king sized mattress that adapted to the contours of my body.I’m over 6′ tall so the California king mattress is perfect for me. I was debating because of the price, but it was well worth it. I’ve never had such a wonderful night’s sleep. When you’re looking for a mattress, make sure to test the options. I found an amazing site that lists different California King Mattress, as well as other mattresses at great prices. They have honestly helped me find the perfect bed and they have all the expert information I needed to find a wonderful night’s sleep. I would definitely recommend them.

  • Rob Bonham03

    This deffinitley make buying a bed a lot easier. There is a lot of good articles I’ve found comparing king vs cal king

  • travis