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Double Bed Size: How Big Is a Double Bed?

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Creating the perfect sleep environment for yourself is top priority. In addition to selecting a mattress type and bedding materials that suit your needs, you'll need to carefully choose your bed size.

If the standard sizes include twin, full, queen and king, you might be left wondering where a double bed fits in. How big is a double bed, and is it the right size for your needs and preferences?

Keep reading for answers to these questions, along with tips and considerations for buying a bed that’s right for you.

How Big Is a Double Bed?

A double bed is 54 inches wide and 75 inches long, which is the same size as a full bed. This size is larger than a twin and smaller than a queen, making it suitable for single adults and some couples. But bear in mind double bed dimensions refer to the mattress, as bed frame sizes vary slightly.

mattress size guide

Full vs. Double Bed Sizes

A double bed is the same size as a full bed: 54 x 75 inches. "Full" and "double" are often used interchangeably, but in the U.S., we most often use “full.” That's why when you shop for a bed frame, mattress or bedding, you'll see options listed as full-size, between twin (or twin XL) and queen.

In hotels, double rooms often have two full-size beds rather than one king. This might be where some of the confusion comes from, but when you see either bed size listed, you can assume they're the same thing.

See our blog on Full Size Bed Dimensions for more info.

Pros and Cons of a Double Bed

Double bed dimensions are generally suitable for single adults, as well as some couples who like to cozy up while they sleep. However, this bed size is 5 inches shorter than a queen, so it might not be long enough for some taller people.

Due to the relatively compact size, a double bed will fit in most small and mid-size bedrooms, making it a good choice for many adult rooms, guest rooms and kids' rooms. This bed size is also one of the more affordable options in terms of a frame, mattress and bedding.

Pros of a double bed:

  • Good size for single adults and some couples

  • Fits in small and mid-size rooms

  • Relatively affordable

Cons of a double bed:

  • Shorter than a queen

  • Too small for some couples

Check out our Mattress Size and Dimensions Guide for a deeper dive into the different mattress sizes and what to consider when buying one.

Double Bed Size: What to Consider When Buying a Double Bed

When buying a double bed, you'll want to think about how it compares to other sizes, how it'll fit in your bedroom, whether it's a good fit for your body, whether you sleep with a partner, what size pillows and bedding to get and finally, the price.

Double Bed vs. Other Mattress Sizes

The mattress dimensions of a double are right in between a twin and a queen. Here's a breakdown of how it compares to other standard bed sizes.

Double vs. Twin

A twin bed is 38 inches wide and 75 inches long. This makes it the same length as a double but 16 inches wider.

Double vs. Twin XL

A twin XL (short for extra-long) bed is 38 inches wide and 80 inches long. It's the same width as a regular twin, only 5 inches longer. This makes it 16 inches wider than a double but 5 inches longer.

Double vs. Queen

How big is a double bed compared to a queen? Queen beds are 60 inches wide and 80 inches long, so they're 6 inches wider than a double and 5 inches longer. These extra few inches in width and length make queens a slightly more suitable choice for most couples.

Double vs. King

How big is a double mattress compared to a king? King mattresses are 76 inches wide and 80 inches long. This makes them 22 inches wider than doubles and 5 inches longer.

Double vs. California King

A California king (or Cal king) bed is 72 inches wide and 84 inches long — 4 inches narrower and 4 inches longer than a regular king. This size mattress is 18 inches wider and 9 inches longer than a double.

Need more pointers? See our Decision-Making Guide for Buying the Right Mattress.

Bedroom Size

Is a double bed size a good fit for the bedroom you're furnishing? Make sure there's not only space for the bed but also for people to walk around it and access other furniture. Generally speaking, a bedroom should be at least 10 x 9 feet to fit a double bed.

Bed Frame Size

Keep in mind that double bed dimensions refer to the mattress size. A bed frame will add a few inches on all sides, so be sure to account for the entire bed and frame when figuring out whether it'll fit in the bedroom.

Not sure what type or style to choose? Here's How to Choose the Best Bed Frame for Your Room.

Sleeper Height and Body Size

Your bed should also be large enough to accommodate your height and body size. Doubles work for many single adults, but they may not be long enough for taller people.

Number of Sleepers

If you sleep with a partner, you’ll want to make sure your bed is wide enough to comfortably fit both of you. Double mattresses work for some couples, but others may prefer a queen or even a king.

Pillow and Bedding Size

Double beds usually call for two standard pillows, which is why double bedding sets come with two pillowcases. As noted, you'll typically see the size listed as full rather than double when you shop for bed linens in the U.S.


A double bed is a relatively affordable option compared to queens and kings. That said, price shouldn't be the only consideration when choosing a bed size. More importantly, your bed should comfortably fit the room and the sleeper.

Frequently Asked Questions About Double Bed Dimensions

Find answers to frequently asked questions about double bed dimensions below.

Is double the same as full?

Yes, double bed dimensions are the same as full beds. Both measure 54 x 75 inches.

How big is a double bed compared to a queen?

When comparing a double bed versus a queen-size bed, the latter is 6 inches wider and 5 inches longer. Doubles are 54 x 75 inches, and queens are 60 x 80 inches.

How long is a double bed?

A double bed is 75 inches long. It's the same length as a twin and 5 inches shorter than a queen. While doubles work for some adults, taller people might need a bigger size.

Can two people sleep in a double bed?

In some cases, two people can sleep comfortably in a double bed. However, couples who prefer a bit more space may prefer a queen or even a king. And for some adults, a double may simply be too short.

Which is bigger, a double or twin bed?

A double bed is bigger than a twin bed. Also referred to as a full, doubles measure 54 x 75 inches, while twins are 38 x 75 inches. While the two sizes are the same length, a double is 16 inches wider.

Is a double bed OK for a guest room?

A double bed size can be a great choice for a guest room, especially when there's limited square footage. The only potential concern is whether it’s too short for the average guest or not big enough to accommodate a couple staying over in your home.

High-Quality Bedroom Essentials From Parachute

Looking for high-quality, sustainably made bedroom essentials? Parachute carries one of the best mattresses available today, the naturally sourced Eco Mattress, along with several handcrafted bed frames. When you browse the selection, you'll find other tasteful bedroom furniture, as well as bedding and pillows for all sleeping styles.

If you need assistance designing your sleeping quarters, an experienced stylist at Parachute is here to help. Schedule your free design consultation today!