Yes, there are several bed sizes that are bigger than a standard king mattress:

• Texas King (80" x 98") — wider +4", longer +18"
• Wyoming King (84" x 84") — wider +8", longer +4"
• Vermont/Alberta King (96" x 96") — wider +20", longer +16"
• Alaskan King (108" x 108") — wider +32", longer +28"
• Family Bed (120" x 80") — wider +44", same length
• Family XL (144" x 84") — wider +68", longer +4"
  

Keep in mind a California King is 72" x 84". It’s 4" longer but 4" narrower than a standard King (76" x 80"), and its total area is actually a bit smaller (6,048 in² vs 6,080 in² for a standard king). So it’s not bigger overall—just longer. Great for tall sleepers or narrower rooms; couples who want maximum shoulder room usually prefer a standard King.

The dimensions for a Casper double size mattress and a full mattress are 53 inches by 75 inches. In this case, both names represent the same kind of mattress. This bed is on the smaller side, but still able to fit two people if needed.

To determine the dimensions of a mattress, measure it from head to foot for the length and from side to side for the width. It may be helpful to measure the depth of the mattress as well, from the bottom where it rests on the box spring to the top.

You will want to use a tape measure and record these three dimensions, in inches, and repeat if necessary if you use a foundation. It’s important to measure your mattress and box spring before buying an encasement or bed.

Now that you know all about the sizes and dimensions of different beds, you should be able to make an informed decision regarding your next mattress. Once you have your sizing figured out, consider an adjustable bed frame for the ultimate comfort or some soft, breathable bedding to outfit your new investment!