Fact checked by Jonathan Eilenberg, CPE
Jonathan Eilenberg, CPE
Jonathan Eilenberg is a Certified Professional Ergonomist who is a Senior Ergonomics Engineer at Casper with over 6 years of experience in occupational injury prevention.
Bed frame dimensions vary based on size and style. The right bed frame depends on its dimensions, design, and the size of your sleep space.
Alas, the best idioms come from board games, not bed frames.1 Nevertheless, they still apply: Oh, how the tables have turned — being put to bed was once akin to a cataclysmic natural disaster, complete with kicking and screaming that could bring even the sturdiest bed frame down.
Now, drifting soundly to sleep is a welcomed occurrence any night of the week. And the foundation of a good night’s rest? It starts from the ground up — that is, from your bed frame up. You might be wondering, then, what’s the optimal bed frame for my sleep setting?
Bed frame dimensions vary based on size and style. The right bed frame for you depends on its dimensions, design, and the spaciousness of your sleep setting. In this comprehensive size guide, we’ll share everything we know about bed frame sizes and styles and how you can use both to optimize your sleep space.
Selecting the perfect fit bed frame is not only a matter of decor — the dimensions and style of a bed frame can impact key elements of your sleep cycle and setup by2:
That said, let’s get back to basics: typically, standard bed frame dimensions match the dimensions of a mattress.2A good rule of thumb is to select a bed frame that corresponds with your mattress size. But keep in mind bed frames can add an extra 2–5” to either side of your mattress, increasing the overall square footage of your sleep setup.
Before you commit to buying a bed frame, review our size chart to determine the best bed frame dimensions for your sleep space:
| Mattress Size | Mattress Width | Mattress Length | Bed Frame Dimensions |
| Twin | 38” | 75” | 38–43” x 77–80” |
| Twin XL | 38” | 80” | 38–43” x 80–83” |
| Full | 54” | 75” | 56–60” x 76–80” |
| Queen | 60” | 80” | 62–67” x 81–85” |
| King | 76” | 80” | 78–82” x 82–85” |
| California King | 72” | 84” | 72–79” x 86–89” |
For more information, check out our detailed mattress size guide.
The foundation for a good night’s sleep is built on two fundamentals: a high-quality mattress, and the right bed frame as the base.
It may sound simple, but there’s science behind the size — a bed frame that’s too large may cause your mattress to move, compromising comfortability, while a bed frame that’s too small can compress your mattress, causing it to warp or bend.2 Ultimately, the perfect fit frame will rock you to sleep by supporting and stabilizing your mattress.
This frame and mattress combination is the most paired-down sleep setup where functionality and size are concerned. With up to 43” in width and 80” in length, a twin bed frame is ideal for single sleepers, bunk beds, and smaller sleep spaces.
It works well beyond the bedroom, too. Are you furnishing a guest room or considering including a day bed in an office or study? Opt for a twin bed frame to save on space without sacrificing comfort.
Explore our twin size mattresses to find the perfect companion to your bed frame.
For single sleepers who desire even more length, the twin XL bed frame provides just that. With an additional 3” in length, the twin XL bed frame allows you to stretch and snore simultaneously.
Shop our twin XL mattresses to complement your bed frame.
With a comfortable range of 56–60” in width and 76–80” in length, a full bed frame is ideal for a single sleeper to roll, splay, and stretch in any direction.
While the full bed frame and mattress can accommodate two sleepers, nights in this frame might feel a little snug. The ultimate partnered sleep experience starts with the Queen bed frame.
Browse our full size mattresses to uncover (see what we did there?) the best fit for your bed frame.
If you and your partner are seeking size and comfort, a queen size bed frame is guaranteed to cradle couples into a deep sleep. The queen frame offers ample room for two at 62–67” in width and 81–85” in length.
It’s perfect for spacious sleep setups, too — a large space may require a large mattress and frame to feel full and balanced. For sizable bedrooms, start with a queen-size bed frame and work up from there.
Check out our range of queen size mattresses to complete your bed setup perfectly.
As the widest available standard-size frame, a king bed is the ultimate choice for large families and living quarters.3
With up to 15” in additional width compared to a queen size bed frame, the king size frame offers maximum personal sleeping space. It can comfortably cradle a whole court of sleepers too, including couples and kids who like to snuggle, to pets who have staked their claim to the throne.
Find the perfect king size mattress to pair with your bed frame in our collection.
Even outside of the Golden State, the California King mattress is aptly named4 — the monarch of mattresses measures 72” wide and 80” long, making the bed frame just as impressive at up to 79” in width and 89” in length.
With vertical length to rival the West Coast, the California king bed frame is the longest available standard bed size, perfect for sleepers who want a little extra legroom.3
But size isn’t the only element to consider when searching for the perfect bed frame. Put away your measuring tape and tap into the aesthetic of your sleep space — when executing your vision, style is paramount.
Discover ideal California King size mattresses to complement your bed frame.
From the teak wood side table to the pinch pleated curtains, to the abstract art on the wall, your bedroom is an extension of your style — and that includes your bed frame.
Whether curling up with your favorite hardcover book or winding down with herbal tea, your bed frame is the centerpiece of your sleep space. To help you understand how to choose a bed frame perfect for your needs, we’ve curated a list of common bed frame styles to consider.
Do you need a box spring to support your mattress? Not necessarily. Different types of platform beds and flat mattress foundation frames curate a modern, minimalist look. They do away with the need for a boxspring and are an effortless solution for a supportive frame.5
At Casper, we’ve redesigned the box spring with our mattress foundation. This easy-to-assemble foundation turns the tall task of choosing the perfect base for your mattress into a no-brainer. Its simple and comfortable design easily integrates into your sleep space and instantly offers a good night’s sleep.
Learn more about the differences between a box spring vs foundation in our guide.
When it comes to its construction, a panel bed frame is a close cousin to the platform frame with one key difference: with this design, we recommend a box spring for additional support.6
Named for the wooden side panels that hold the box spring and mattress, panel bed frames feature wooden slats or metal bars that offer extra support and added airflow.6
Fashioned after American and French design elements that were popular during the 19th century, sleigh bed frames infuse your sleep space with vintage charm, and they’re quite the statement piece, too.6
This bed frame’s features give it its memorable moniker, with scrolled or curved headboards and footboards resembling a sleigh.6
So, what is an adjustable bed frame? An adjustable bed frame comes equipped with an interior motor or remote that allows sleepers to customize their sleeping positions to meet their needs.6
Whether you enjoy reading, watching TV in bed, or require adjustable settings for ultimate comfort, Casper offers a curated collection of adjustable bed frames. A wireless remote allows you to choose between multiple programmable positions so you can restore and relieve your body while you sleep.
A four-poster bed frame boasts an exquisite, ornate design that offers elegance to any sleep space. With four columns rising from each corner, this style is perfect for high ceilings or spacious quarters.6
The ideal space saver in any household, a storage bed frame is equipped with hidden drawers or enclosures that flawlessly blend with the foundation of the bed.6
Storage options typically run the length of the frame and can be found along the sides or the front.6 If your sleep space doesn’t include a closet, a storage bed frame is perfect for stashing away your wardrobe overflow or concealing extra blankets and pillows.
Unfortunately, this bed frame is not the best for adults, but it is the perfect option for growing families or homes with limited sleep space.
Bunk bed frames are available in several styles to suit any child’s needs: from L-shape to desk attachments to bunk beds with stairs, this bed frame is practical and fun.6 Learn more about the bunk bed mattress size in our blog to help inform your bed frame buying decisions.
Not to be confused with the bunk bed frame, the loft bed frame features an open space below the raised bed instead of secondary sleeping quarters.6
Another innovative space saver, the loft bed frame offers versatility to a sleep space with several options for customization: convert the additional space into a second closet, a reading nook, or a study space.
Unique in its design, the trundle bed frame supports two sleep setups, with a second bed that slides out from below the main frame and seamlessly blends into the bed when not in use.6 It’s an ideal frame option for short-term sleepers like friendly guests or familial visitors.
Now that you’re an expert on bed frame styles, let’s talk about materials. There are fewer options where bed frame materials are concerned, but just like the style of your bed frame, the material can alter and elevate the aesthetic of your sleep space.
Whether you’re channeling the coziness of a cottage setting or desire a classic look, wood bed frames are the epitome of craftsmanship. These bed frames are fashioned from a variety of natural materials and washed in an array of delicious finishes from honey to espresso.5
Metal bed frames offer a sleek, contemporary feel to a bedroom. They’re an ideal option to pair with hardwood flooring to add dimension to your sleep space or cool down the warmth of an all-wood look.
Metal bed frames are often more lightweight than wooden bed frames and can be more durable against scratches and daily wear and tear.6
Composite bed frames meet at the crossroads of style, functionality, and sustainability. Composed of several materials like wood fibers and recycled plastics,7 this bed frame is designed to mimic the look and feel of traditional materials and can be a cost-effective alternative to hardwood.7
Fabric-covered bases create a clean, composed look in the bedroom. Often complete with padded headboards and footboards, they exude luxury and comfort at every corner.5
At Casper, you can choose from three custom textiles with our Upholstered Bed Frame. This fabric-wrapped frame offers a warm, cozy feel, while our ledge perimeter provides extra support when sliding in and out of bed.
At Casper, we believe a good night’s sleep is the solution to every problem. Tough day at work? Get some rest. Taking a personal day? Wake up refreshed with waffles in bed. No matter the moment, the fastest route to Slumberland is choosing the perfect bed frame to pair with your mattress.
With the right dimensions, your bed frame will support your mattress and meet the needs of your style and space. But don’t lose sleep worrying about whether you’ve found the perfect bed frame — choose Casper.
From adjustable frames to luxe upholstered bases, our innovatively engineered bed frames focus on optimal sleep support and ultimate comfort. With Casper, you can count on quality while you count sheep. (Now that’s the idiom we were looking for.)
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