Most people are familiar with a handful of standard mattress sizes: twin, full (also called a “double”), queen and king. Crib mattresses, which double as toddler bed mattresses, are a standard size in the U.S. as well. Each of these has specific dimensions that are uniform across the country:

• Crib/Toddler: 27″ by 52″
• Twin: 38″ by 75″
• Full/Double: 53″ by 75″
• Queen: 60″ by 80″
• King: 76″ by 80″

While these sizes are by far the most common, they’re by no means the only mattress sizes available in the U.S. In fact, there are some beds that aren’t even rectangular. If you’re considering a non-standard mattress size, there are a few factors to consider:

• Will it fit in your room? Measure and make sure that it will work with your space, and leave room for essentials like nightstands, dressers and other furniture.
• Can you get it into your house? Sure, a massive bed that takes up most of your bedroom might seem like a dream come true, but it can quickly become a nightmare when you’re trying to navigate stairs and doorways to actually get it inside.
• Will sourcing bedding be a problem? If you have a non-standard bed, you can’t just run down to the nearest department store for a new sheet set. Custom bedding will have to be special-ordered, and it can get expensive.

With these considerations in mind, let’s check out a few non-standard mattress options.

Oversize Mattresses

Twin XL is a slightly longer version of the regular twin mattress that’s common in college dorm rooms. They’re 80 inches long, compared to 75 inches for a standard twin mattress. Bedding is easy to find for this size in college towns and in big box stores around the start of the school year.

California King is a specialty size that’s not too hard to find. It’s a little more narrow than a standard king, at 72 inches as opposed to 76 inches, but it’s also a bit longer at 84 inches, making it a good option for really tall people. A Grand King comes in at a whopping 80 by 98 inches.

Custom Mattresses

Probably the biggest customer base for custom mattresses is people with antique beds. That’s because, prior to the turn of the 20th century, there weren’t standard bed sizes. People either made their beds themselves or had them custom-made. They were tailored to fit the sleepers and the space. While antique beds can sometimes be resized to accommodate modern, standard mattresses, some owners opt to have a custom mattress crafted to fit the bed. Custom mattress companies will also make specialized beds for spaces like RVs and boats, as well truly odd creations like heart-shaped beds.

¾ Size Mattresses

A “standard” three-quarter sized mattress is 48 by 74 inches. They’re commonly used in RVs, boats, and day beds. They also fit some antique bed frames, and they’re enjoying increasing popularity thanks to the tiny house movement.

Round Mattresses

Circular beds have never exactly been a design staple. Frankly, they’re impractical, taking up a lot of floor space without providing much actual sleeping area, and like the other entries on our list of non-standard mattress sizes, they require hard-to-find specialty sheets and bedding. However, these curvaceous pieces of furniture are a 1960s icon, probably best known to today’s generation due to their “shagadelic” appearance in the Austin Powers movie. The LA Times reports that round beds are making a comeback today thanks to the wild popularity of all things mid-century.

Do you have a non-standard or oddly-sized mattress? Love it or hate it? Share with us in the comments!