The Complete Guide to King Size Bed Dimensions: Everything You Need to Know

When it comes to buying a new bed, one of the most important factors to consider is the size. And if you’re looking for a spacious and luxurious option, a king size bed is the way to go. But before you make your purchase, it’s crucial to understand the dimensions of a king size bed. In this guide, we will provide you with everything you need to know about king size bed dimensions, so you can make an informed decision.

Standard King Size Bed Dimensions

A standard king size bed is also known as an Eastern King and is the most common type of king size bed available. The standard dimensions for a king size bed are 76 inches wide by 80 inches long. This makes it wider than a queen-size bed by 16 inches and offers plenty of space for couples who prefer more room while sleeping.

California King Size Bed Dimensions

If you’re taller or prefer extra legroom, then a California King size bed might be the better option for you. Unlike the standard king size bed, the California King offers more length but sacrifices some width. The dimensions for a California King size bed are 72 inches wide by 84 inches long. This makes it narrower than a standard king-size bed but provides an additional four inches in length.

Split King Size Bed Dimensions

For those who have different sleeping preferences or want greater flexibility in arranging their bedroom furniture, a split king-size bed can be an excellent choice. A split king consists of two twin XL mattresses placed side by side on separate adjustable bases, allowing each sleeper to customize their side of the mattress according to their needs. Each twin XL mattress has dimensions of 38 inches wide by 80 inches long.

Other Considerations for King Size Beds

In addition to understanding the basic dimensions of a king size bed, there are a few other factors to consider before making your purchase. One such factor is the height of the bed. The height can vary depending on the design and style of the bed frame and mattress combination. It’s essential to ensure that the height of the bed is comfortable for you to get in and out of without any difficulty.

Another consideration is the size of your bedroom. Before investing in a king size bed, it’s crucial to measure your room to ensure that there will be enough space for other furniture and easy movement around the bed. Additionally, consider doorways, hallways, and staircases that may affect the delivery and installation process.


When it comes to choosing a new bed, understanding king size bed dimensions is crucial for making an informed decision. Whether you opt for a standard king, California king, or split king-size bed, knowing the dimensions will help you determine if it fits your needs and space requirements. By considering factors like height and room size in addition to dimensions, you’ll be well-prepared to find the perfect king size bed for a comfortable night’s sleep.

This text was generated using a large language model, and select text has been reviewed and moderated for purposes such as readability.