King-Size Bed Dimensions: How to Know If It Will Fit in Your Bedroom – CNET

Not getting enough sleep can have serious repercussions. It can affect your mental health, prematurely age your brain and even affect how long you live. 

Part of getting the right amount of sleep is having the right mattress. But before you can buy your new bed, you need to know the right mattress size for your room. A king bed gives a ton of space for sleep and makes room for sleeping partners, but it also demands a lot of space in your bedroom. 

If you are thinking about buying a new king bed for your bedroom, this is what you need to know before you go shopping.  

King-size bed dimensions

The standard king bed measures 76 by 80 inches with a surface size of 6,080 square inches. It can also be made from two twin mattresses pushed together, with each twin bed typically measuring 38 by 80 inches. It makes a king a bit longer than a California king bed but not as wide. In comparison, a California king measures 72 by 84 inches. Meanwhile, a queen bed is the same length as a king bed but not as wide, measuring 60 by 80 inches. When deciding between a king vs. queen bed, it all has to do with how wide you want your bed to be. If you are taller, a California king will give you the extra length to comfortably fit your height.  

However, it is important to note that measurements can vary slightly based on the manufacturer, so be sure to check the measurements before you buy.

To see how a king bed compares, this is an overview of mattress measurements by size

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What are the dimensions of a king mattress?

A king-size bed is 6 feet, 4 inches in width and 6 feet, 8 inches in length.

What are the measurements for a king-sized bed frame?

No, a California king mattress does not fit a king frame. A king mattress is wider, so you will have a few inches hanging over the side of the frame.  

How big is a California king compared to a king?

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