california king vs king mattress dimensions illustration

California King vs. King: What’s the Difference?

When it comes to mattress royalty, not all kings are the same. You can choose a standard king or California king, the two most common types. (There are also more exotic options, like Alaskan, Wyoming, or Texas kings.)

If you’re looking for a bed big enough to spread out, comfortably accommodate you and a partner, and provide ample room for kids and furry friends, then both of these types of kings are good options. But, they each have their own pros and cons.

Is a king size mattress or a California king mattress the right mattress size for you? Our California king vs. king guide will help you determine just that.

california king size bed dimensions infographic

California king bed size

A California king mattress measures 72 inches wide by 84 inches in length. It’s 4 inches longer, but also 4 inches narrower, than a standard king mattress.


When would a California king mattress make more sense than a king size bed? Here are the top three reasons to choose a Cal king vs. king:

  • The California king is a good option for taller people because it’s longer than the standard king mattress. Generally, anyone over 6 feet will be best suited by this mattress size as a California king is 7 feet in length.
  • A California king fits well into a longer or narrower bedroom. If you’ve been considering a king size mattress but your bedroom can’t quite accommodate the full width of one, a Cal king may work instead.
  • You’ll have plenty of room for children and pets to pile into your bed. It definitely has that “the more, the merrier” feel. Because a Cal king is slightly less wide than a standard king, though, it’s important to note that you’ll be closer to your partner while you sleep.

Prudence Bailey, founder and principal designer of Prudence Home + Design in Connecticut, concurs with these benefits: “California kings are good if you or your partner is tall, as there is more foot room,” she says. “They’re also good for people with large bedrooms since they are longer—it will fill the space better.”


Of course, the California king has a few drawbacks as well. Here are the three biggest downsides to this mattress size:

  • It doesn’t offer quite as much room as a king. The California king’s narrower width means it affords less room for couples, children, or pets. With a California king, you get 36 inches of space per person, vs. 38 inches per person in a king size bed.
  • It takes up a lot of space. If you have a smaller bedroom, then a California king may not be right for you. At minimum, your bedroom should be 12 feet by 12 feet to comfortably fit a California king.

king size bed dimensions infographic

King size bed dimensions

The standard king mattress measures 76 inches wide by 80 inches in length. It is 4 inches wider, but also 4 inches shorter, than a California king mattress.


To help you decide between a California king vs. king, we’ve rounded up the top four benefits of choosing a standard king size mattress:

  • A king size bed provides more room for couples. “Most people would agree that the biggest advantage in getting a king size bed is more generous room for you and your partner,” says Mary Brennan, interior designer and founder of House of Fine Design in New Jersey. “Not only is it just more comfortable, but in particular, if one person
    is more of a restless sleeper or a light sleeper, the added sleep space
    helps keep disturbing the other to a minimum.”
  • Due to its large size, a king mattress allows plenty of space for children and pets.
  • Its larger size can help fill space in a large-size bedroom.
  • A king offers extra room for other activities besides sleep and sex, such as working or watching TV from bed.


While there are a lot of positives to getting a king size mattress, there are some drawbacks too. Here are the four biggest reasons to not get a king bed:

  • It’s too much work for a solo sleeper. The king isn’t practical for solo sleepers because it’s a lot of bed for one person to have to make up alone. “A king size is a bit more effort when it comes to making and dressing the bed since it is so much larger,” says Brennan.
  • A king size bed takes up a lot of space. It won’t fit in studio apartments or small bedrooms. The ideal bedroom size for a king size bed is 14 feet by 19 feet, although it will technically fit inside a room as small as 10 feet by 12 feet.
  • Since they’re so large, they can be tough to navigate. You may find yourself unable to fit it up stairs or get it through doorways. In this situation, you may want to consider a split king, which is comprised of two twin XL mattresses, as this will be much easier to fit up a narrow staircase.
  • Because a king size bed is the largest bed size, it’s a higher price
    than other mattress sizes—and you’ll have to spend more on things like a headboard and bedding.

Our Best Mattresses That Come in King and Cal King Sizes

Saatva Classic

Our flagship luxury mattress is expertly engineered with coil-on-coil construction for durability, a layer of memory foam for enhanced back support, and a cushiony Euro pillow top for extra comfort.


Loom & Leaf Memory Foam

Premium memory foam, handcrafted in the U.S. with eco-friendly materials. Breathable organic cotton, cooling spinal gel, and layers of high-density support foam assure a cool, comfortable night’s sleep.


Zenhaven Latex Mattress

100% Talalay latex responds to every curve for pressure-free support and responsive comfort. Talalay latex is supple, resilient, and durable, for the ultimate in elevated sleep. (It’s naturally hypoallergenic too.)


Which should you buy?

Now that we’ve reviewed the pros and cons of kings and California kings, you need to decide which one is right for you. Here are a few important points to consider before making your final decision:

  • Room dimensions. If your bedroom is narrower, a California king may be the better option because it provides additional length while being slightly narrower than the standard king.
  • Your and your partner’s height. If either or both of you are on the taller side (over 6 feet), the California king is probably your best bet because of the added length of this mattress.
  • Partner sleep preferences. Are you or your partner a restless sleeper? Does one of you sleep hot? If you like more room away from your partner while you snooze to ensure you get a good night’s sleep, then a standard king size bed might be a better. You can always meet in the middle for a cuddle.

More Great Saatva Mattresses Available in King and Cal King

Saatva Latex Hybrid

This all-natural, organic mattress combines the pressure-free support of Talalay latex with the classic innerspring feel. Handcrafted with pure materials for the ultimate in cool and healthy sleep.



Featuring 50 precise firmness settings on each side of the bed for personal customization. Talalay latex and gel-infused memory foam layers provide luxurious comfort and support.


Saatva HD

Luxury hybrid innerspring engineered to support people weighing between 300 and 500 pounds. Plush upper layers of foam and latex deliver comfort, while a high-durability coil base offers support.


Still not sure which mattress is right for you and your partner? Read our guide to finding the best mattress for couples.