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FAQs About California King Mattresses

FAQs About California King Mattresses

California king mattress
Choosing a mattress size is important when shopping, but it affects more than how far you can sprawl out. Since the 1960s, the California king has reigned as the largest mattress on the market. But is it the best mattress for you and your family? Keep reading for the answers to the most frequently asked questions about California king mattresses.

California king mattress

FAQs about California Kings:


How big is a California king mattress?

A California king mattress is 72 inches wide and 84 inches long. These beds are perfect for singles and couples alike. If two people are sharing this bed, you’ll each have almost a twin size mattress to yourselves. That leaves plenty of room for kids, cats, or dogs to share the space and get some quality time!

California King Mattress Width Length Area
Inches 72 84 6048
Centimeters 183 213 38979



What is the difference between a king-size bed and a California king?

Because California king mattresses are meant for people who are taller than average, they’re 4 inches longer than a standard king, but they’re also 4 inches narrower. If you need more width than length, a regular king mattress may be better for you.


What are Western king and Eastern king mattresses?

Western king is just another name for California king, and Eastern king is another name for a standard king. You may see either name used when you are shopping online for mattresses.


Why would I need a California king instead of a regular king?

California kings are perfect for big families who love to pile into one bed. You’ll be able to snuggle up with the whole family on a cozy Saturday morning. You would even have room for a pet or two to curl up on the bottom of your bed. And if you or your significant other are on the taller side, a California king may be just the right fit.


Can I use regular king sheets on a California king mattress?

No, these sheets aren’t interchangeable. The extra 4 inches of length would make it difficult to put on regular king sheets. Similarly, you couldn’t use California king sheets on a regular king mattress because you’d be left with too much sheet. If you decide to get a California king mattress, you’ll also need to buy California king bed sheets.


Do you use a box spring with a California king?

Because California king mattresses are so big, they need a box spring for support. These box springs typically come in a set of two and are slightly thinner than a twin-size box spring. Using a box spring will keep your large bed from sinking in the middle over time.


Can a California king mattress fit a king bed frame?

A California King mattress is 72 inches wide and 85 inches long, while a standard king-size mattress is 76 inches wide by 80 inches long. Because a California King is 4 inches narrower and 5 inches longer, it’s best stick to a California king bed frame.

If you have a tall significant other or plenty of kids and pets who love to jump on your bed, a California king is the perfect fit for you. If you’re considering a bed size besides a California king, don’t worry. We’ve got all the information you need in our Bed Size Fact Sheet.