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The Ultimate Mattress Size Chart and Bed Dimensions Guide

CEO Khai Intela
Choosing the right mattress size can be more complicated than you may think. With factors like bedroom space and leg room to consider, finding the perfect fit for you and your bedroom can be a...

Choosing the right mattress size can be more complicated than you may think. With factors like bedroom space and leg room to consider, finding the perfect fit for you and your bedroom can be a daunting task. That's why we've put together a comprehensive guide to help you make an informed decision when selecting your mattress.

Common Bed Size Dimensions Comparison

Small Single Bed (Cot) Dimensions

Illustrated image of Small Single Cot Dimensions Image: Small Single Cot Dimensions

A small single bed, also known as a cot, is the size of a crib mattress. It measures approximately 30" wide and 75" long. This size can also serve as a toddler bed once your baby outgrows the cot. If you're looking for a crib mattress or a toddler bed, check out our Best Crib Mattresses here.

Twin Bed Dimensions

Illustrated image of Twin size bed dimensions in inches Image: Twin Size Bed Dimensions

A typical twin bed measures 38" wide and 75" long. This size is ideal for children who have outgrown cribs and toddler beds. It's also great for those who sleep in tight quarters or share a room with a sibling or roommate. Twin beds are commonly used as day beds, bunk beds, dorm room beds, and in guest rooms.

Twin XL

Twin XL Bed Dimensions Illustration Image: Twin XL Bed Dimensions

The Twin XL is a subcategory of double beds. It measures approximately 38" wide and 80" long, providing extra length compared to a standard twin bed. This size is perfect for adults who want to save space without compromising comfort. If you're interested in learning more about the differences between Twin XL and Twin mattresses, check out our Twin XL vs. Twin guide.

Can I use a Twin XL mattress on a King Size Bed Frame? The answer is yes! You can use two twin XL beds in a king frame. This can be a helpful solution for couples who have different firmness preferences. Explore the best Twin XL beds available in the market.

Full Bed Dimensions

Illustration of full size bed dimensions in inches Image: Full Size Bed Dimensions

A full-size mattress, also known as a standard double, measures 54" wide and 75" long. It offers more room than a twin bed and is suitable for adults who need extra space. However, if you're sharing the bed with a partner, the fit might be snug. Consider a wider option if you have a pet or child that sleeps next to you. We recommend the Helix Kids and WinkBeds Original for great full-size mattress options.

Full (Double) XL

Double Bed XL measures in inches Image: Full (Double) XL Bed Dimensions

The full XL measures 54" wide and 80" long, providing an additional 6 inches of leg space compared to a standard full-size bed. If you don't need extra width but want more room for your legs, this is the perfect option. For an in-depth comparison between double and full mattresses, check out our Double vs. Full mattress comparison guide.

Queen Bed Dimensions

Image showing a queen size bed dimensions in inches Image: Queen Size Bed Dimensions

Queen size mattresses are 60" wide and 80" long. They offer ample space for most sleepers and are great for couples, children, or pets who share the bed. Consider the size of your bedroom, as queen beds and larger take up more room. If you have a larger bedroom, a queen-size mattress might be perfect for you. We recommend the DreamCloud Original and Nectar Original for great queen-size mattress options.

Olympic Queen

Image showing the size of an Olympic Queen type Image: Olympic Queen Bed Dimensions

Olympic Queen mattresses measure 66" wide and 80" long, providing slightly more width compared to a standard queen bed. If you don't want to upgrade to a king-size bed but need more width, an Olympic Queen is a perfect choice.

King Bed Dimensions

King Bed Dimensions Illustration Image: King Size Bed Dimensions

A standard king-size mattress measures 76" wide and 80" long. It's recommended to have a room size of at least 12x12 square feet to ensure sufficient space around the bed. King beds are perfect for couples who sleep with their kids or pets and want extra room. If you prefer to compare king-size mattresses to other options, a king is equivalent to two twin XL beds. We suggest the Saatva Classic and Nolah Evolution for great king-size mattress options.

California King Bed Dimensions

Illustrated image of California King measurements Image: California King Bed Dimensions

A California king-size mattress measures 72" wide and 84" long, making it one of the largest options available. This size is perfect for active sleepers, tall individuals, and couples with kids or pets. Although it provides extra length, it's narrower compared to a standard king-size bed. Ensure that you have a room size of at least 12x12 square feet to accommodate a California king mattress. For an in-depth comparison between California King and King mattresses, check out our California King vs. King mattress size guide.

What to Have in Mind When Choosing the Right Mattress Size

Bedroom Size

Before choosing a mattress, consider the size of your bedroom. Ensure that the mattress will fit comfortably without obstructing movement within the room. Here are some illustrations to help you visualize how certain mattress sizes will fit in your room.

Conclusion

When selecting the right mattress size, there are several factors to keep in mind. First, know the dimensions of your current bed to avoid choosing the same size unintentionally. Second, measure the room you'll be sleeping in, especially if you're moving. Ensure that the size of the mattress is suitable for the available space. Finally, consider who will be using the bed. If you're sharing the bed with a partner, children, or pets, opt for a larger size such as a queen or king. Now that you have a better understanding of mattress sizes, explore our guides on different mattress styles and brands to find your perfect match.

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