What is King Size Mattress? King Size Dimensions Guide
Jessa Taash
March 21, 2024
Are you tired of feeling cramped and restricted in your bed, constantly battling for space with your partner? Do you and your partner feel squished in your bed at night?
Sharing a small mattress, like a full or twin size, can be a recipe for restless sleep. Stealing the covers, getting elbowed, and listening to someone snore—it’s enough to make anyone grumpy in the morning!
If you’re ready to stop the sleep battles and wake up feeling refreshed, then a king-size mattress might be the answer. This larger bed offers plenty of room to stretch out and sleep soundly, no matter how much you toss and turn.
This guide, “What is a king size mattress?” will explain everything you need to know about king-size mattresses. We’ll cover their size and standard dimensions, why they’re comfy for couples and single sleepers, and what to think about before you buy one. So, get cozy and find your perfect path to a good night’s sleep!
Table of Content
What is a King Size Mattress?
Although there are many variants of king-size mattresses, the standard king-size mattress measures 76 inches wide by 80 inches long (that’s about 6 feet 4 inches by 6 feet 8 inches, or 193 cm x 203 cm). It is 16 inches wider than the queen-size mattress.
This standard size provides ample sleeping space for two adults, allowing each person to have the equivalent of a twin XL mattress (38 inches by 80 inches) to themselves. That means that two twin XL mattresses measure the same as the standard king-size mattress (also called a split king mattress).
Standard king bed frames are 78–80 inches wide and 82–84 inches long, allowing the mattress to fit snugly inside. King-size mattresses aren’t just for couples; they’re also great for single sleepers who love to stretch out during the night.
History Of The King Size Mattress
Believe it or not, the king-size mattress we know today isn’t a relic of royalty! For most of the 20th century, Americans primarily slept on twin or double-sized mattresses. While larger options existed, they weren’t widely popular until the mid-1940s.
The concept of a “king-size” mattress emerged in the late 1950s, credited to the Simmons Company (around 1958). They launched the “King Size” mattress, measuring 76 inches wide and 80 inches long, which quickly gained popularity among consumers seeking a more expansive sleeping surface.
Mattress Sizes
Mattresses come in various sizes, each designed to accommodate different preferences and sleeping arrangements. The most common mattress sizes include twin, twin XL, full, queen, king, and California king. It’s important to note that these dimensions can vary slightly between different mattress manufacturers.
Mattress Size Dimensions Chart
Size | Dimensions (Inches) | Dimensions (cm) | Best For |
Twin | 38″ x 75″ | 97 cm x 191 cm | Single sleepers, children |
Twin XL | 38″ x 80″ | 97 cm x 203 cm | Taller sleepers |
Full | 54″ x 75″ | 137 cm x 191 cm | Single sleepers, couples who prefer some space |
Queen | 60″ x 80″ | 152 cm x 203 cm | Most popular size, good for couples |
King | 76″ x 80″ | 193 cm x 203 cm | Couples who desire more space, single sleepers who love to sprawl |
California King | 72″ x 84″ | 183 cm x 213 cm | Taller sleepers, couples who need extra legroom |
Types of King Size Mattress
While the standard king-size mattress (76″ x 80″) is the most common and widely available option, several other variations of king mattresses cater to different preferences and room dimensions. Here are some of the key types:
1. California King Mattress
The California king-size mattress, also known as the Cal King, measures (72″ x 84″), making it 4 inches narrower but 4 inches longer than the standard king. This size is ideal for taller individuals who need extra legroom or couples who prefer a narrower profile but still want ample length.
2. Split King Mattress
The split king mattress (76″ x 80″) offers a versatile option for couples with different sleep preferences or adjustable bed frames. It consists of two twin XL mattresses placed side by side, providing individual comfort and customizable sleeping surfaces
3. Texas King Mattress
The Texas King is the largest standard mattress size, measuring 80″ x 98″). This oversized option provides abundant space, perfect for couples who co-sleep with children, pets, or those who desire an incredibly roomy sleeping surface.
4. Wyoming King Mattress
Similar in dimensions to the Texas King, the Wyoming King mattress measures (84″ x 84″). It is a genuinely expansive square sleeping area. This size is often favored by taller individuals or couples who value maximum space and freedom of movement.
5. Alaskan King Mattress
As the name suggests, the Alaskan King is a colossal mattress size, measuring 108″ x 108″—9 feet by 9 feet. While not a standard size, it is available from some specialty manufacturers for those seeking an ultra-luxurious and spacious sleeping experience.
How to Maximise Bedroom Space with a King-Size Mattress?
While a king-size mattress offers luxurious sleeping space, it can pose challenges when fitting into your bedroom. However, with some strategic planning and utilization of space, you can seamlessly fit a king mattress into various room configurations. Here are some tips for maximizing your bedroom space:
Square-shaped bedroom
Square bedrooms often provide the easiest layout for fitting a king-size mattress. Centre the bed along one of the walls, leaving enough space for nightstands on either side and a walkway around the bed. Consider using lower nightstands and a headboard that won’t visually crowd the room.
Rectangular-shaped bedroom
Rectangular rooms offer more flexibility for larger beds, like king-size mattresses. In a rectangular bedroom, position the king-size mattress with the headboard against the shorter wall.
It will create a sense of balance and leave ample space for dressers, chairs, or other furniture along the longer walls.
L-Shaped Bedrooms
L-shaped bedrooms offer an opportunity to create distinct zones. So, place the king-size mattress in the longer section of the room. It will nicely leave the shorter area for a seating nook, home office, or dressing area.
Use room dividers, curtains, or strategically placed furniture to define the spaces while maintaining an open flow.
Uniquely Shaped Bedroom
Get creative with your furniture placement for bedrooms with angled walls, alcoves, or other unique architectural features.
Consider using a headboard that fits snugly into a nook or placing the king mattress diagonally to create visual interest and maximize floor space. Built-in storage or custom cabinetry can also help maximize every inch of available space.
What to Consider when Choosing a Mattress Size?
Choosing the right mattress size involves considering various factors such as height, sleep position, bedroom size, budget, and compatibility with bed frames.
Although a king-size mattress is suitable for ample space, it is more expensive than other mattress sizes. Here are each of these factors to help you make an informed decision:
Height
If you’re taller than average, you may find a standard mattress too short, leaving your feet hanging off the end. In such cases, opting for a more extended mattress size, like a California king or Texas king, can provide the necessary legroom for a comfortable sleeping experience. If you are
- Under 5’9″: A twin or twin XL mattress (75″ or 80″ long) might be sufficient.
- 5’9″ to 6’2 “: Most mattress sizes, including full, queen, and king, will provide ample legroom.
- Over 6’2″: Consider a king-size (80″ long) or California king (84″ long) mattress for maximum comfort.
Sleep Position
Your sleep position is vital in determining the ideal mattress size for you. For example, if you sleep alone and prefer to spread out or move around during sleep, a larger mattress size, like a queen or king, may be more suitable.
On the other hand, if you sleep in a more confined position or share the bed with a partner, a full or queen size may be sufficient.
Bedroom Size
The size of your bedroom is an essential consideration when choosing a mattress size. Measure the available space in your room to ensure that the chosen mattress will fit comfortably.
In smaller bedrooms, a twin or twin XL size may be more appropriate, while larger sizes, such as queen, king, or California king, require more space.
Budget
Larger mattress sizes generally come with a higher price tag. While a king or California king mattress offers ample sleeping space, it may strain your budget.
Consider your financial constraints and prioritize comfort and quality over size if necessary. Alternatively, explore options like a queen-size or full-size mattress for smaller spaces and more budget-friendly choices.
Compatibility with Bed Frames
Ensure your chosen mattress size matches your existing bed frame or the one you plan to purchase. Standard bed frame sizes may not accommodate larger mattress sizes like the Texas King or Alaskan King.
If you’re considering these oversized options, you may need to invest in a custom-made bed frame or platform bed to ensure a proper fit.
Tips for shopping for a king-size mattress
Investing in a king-size mattress is an important decision that can significantly impact your sleep quality and overall well-being.
After getting to know “what is a king size mattress?” Well, it’s time to make the right choice for a mattress. Here are some essential tips to keep in mind when shopping for a king-size mattress:
Consider the Room Size
Before you decide on a king-size mattress, measure your bedroom carefully. A king mattress that measures 76 inches wide by 80 inches long can take up considerable floor space.
Our experts recommend having at least 2 feet of clearance on each side of the bed for easy movement and accessibility. If your room is smaller, a king-size mattress may feel cramped and leave little room for additional furniture.
Your Home Shifting Activities
King-size mattresses are notoriously heavy and bulky, making them challenging to move through narrow hallways, stairs, or tight corners.
If you foresee frequent home shifts or plan to move the mattress frequently, consider the logistics of maneuvering such a large item. Alternatively, you could opt for a split king mattress, consisting of two separate mattresses that can be moved more quickly and joined together on the bed frame.
Sleeping Activities
Consider your sleeping habits and preferences when choosing a king-size mattress. If you tend to sleep alone or prefer ample personal space, a king-size bed can provide the luxury of stretching out without feeling confined.
However, consider the movement level and potential disturbance if you co-sleep with a partner, children, or pets. In such cases, selecting a mattress with motion isolation technology or opting for a split king can help minimize disruptions caused by movements on the other side of the bed.
Pros of a King Size Mattress
Investing in a king-size mattress can be a game-changer for your sleep quality and overall well-being. Here are some notable pros of opting for this luxurious mattress size:
Ample Space
The most apparent advantage of a king-size mattress is its expansive size (typically 76″ x 80″). This gives you a luxurious amount of room to sprawl out, starfish freely, or curl up in a cozy cocoon—whatever sleep style suits you best.
No more feeling confined or battling for covers—a king-size bed offers a sleep experience fit for royalty.
Good for Co-Sleeping
A king-size mattress provides the ultimate solution for a peaceful night’s sleep together. Forget about elbow battles, stolen covers, or feeling like you’re rolling into your partner.
The generous space allows for individual comfort and movement, minimizing sleep disruptions and fostering a more restful night for both partners.
You Can Move Easily
Are you a restless sleeper who frequently changes positions throughout the night? A king-size mattress offers the freedom to move around without feeling restricted.
Whether you’re a side sleeper who needs ample legroom or a back sleeper who loves to sprawl out, the extra space allows for uninhibited movement and a more comfortable sleep experience.
A Long-Term Investment
King-size mattresses are often constructed with high-quality materials to provide lasting support and comfort. While the initial investment might be higher, the durability of a king-size mattress can translate to years of blissful sleep.
Considering its extended lifespan and enhanced sleep quality, a king-size bed can be a wise long-term investment in your overall well-being.
Cons of a King Size Mattress
While a king-size mattress offers undeniable sleep benefits, there are a few considerations before you crown it the king of your bedroom. Here’s a peek at the potential downsides:
Big Room
With 76 inches wide and 80 inches long, a king mattress can easily dominate a smaller room, leaving little space for additional furniture or walking areas.
If your bedroom is on the smaller side, a king-size mattress may not be the best choice, as it could leave you with limited space for dressers, nightstands, or other necessary furniture.
Price
Due to the increased materials and construction required, king mattresses typically cost more than their twin, full, or queen counterparts. King-size bed frames, headboards, and bedding sets (such as sheets, comforters, and mattress protectors) are often more expensive than those designed for smaller sizes.
FAQs: What is a King Size Mattress?
Is a king-size bed worth it?
A king-size bed can be the worth the investment for many people, but it depends on your specific needs and circumstances.
If you have the bedroom space to accommodate a king-size mattress (76″ x 80″), prefer ample room to stretch out, frequently co-sleep with a partner or pets, or simply value the luxurious sleeping experience, then a king-size bed is likely worth the added cost.
However, if you’re working with a smaller bedroom, have a tighter budget, or don’t require as much sleeping space, a smaller mattress size, like a queen, is more practical and economical.
Ultimately, considering factors like your sleeping habits, room dimensions, budget, and the comfort of a king-size bed justifies the investment for your particular situation.
Is there a bed bigger than a King?
Yes, there are bed sizes larger than a standard king mattress.
While the king-size (76″ x 80″) is one of the most popular and widely available larger mattress options, even bigger sizes are available. These include the California king (72″ x 84″), the Texas king (80″ x 98″), the Wyoming king (84″ x 84″), and the massive Alaskan king (108″ x 108″ or 9′ x 9′).
These oversized mattresses provide an exceptionally spacious sleeping surface, ideal for very tall individuals, couples who greatly value personal space, homes with large master bedrooms, or those who desire an ultra-luxurious sleeping experience.
However, these mattress sizes beyond King are specialty or custom options so they can be more challenging and significantly more expensive than standard mattress dimensions.
Are King beds bad for relationships?
No, king-size beds are generally not bad for relationships. Many couples find that a king-size mattress (76″ x 80″) can benefit their relationship by providing ample personal space and reducing disruptions from a partner’s movements during sleep.
The extra room of a king bed can help minimize feelings of being crowded or disturbed, leading to better sleep quality for both individuals.
However, our experts at Sleep Advisory suggest that a considerable sleeping surface could create emotional distance in a relationship if couples drift too far apart.
Ultimately, the choice depends on the couple’s preferences, sleeping habits, and bedroom size. With open communication and compromise, most couples can make a king bed work well for their relationship.
Do 2 Twins make a King?
No, two standard twin beds won’t create an actual king-size mattress. Here’s why:
Standard twin dimensions: A twin mattress is 38 inches wide and 75 inches long.
King-size dimensions: A king-size mattress is 76 inches wide and 80 inches long.
While two twins offer the same width as a king (76 inches), they fall short in length by 5 inches (75 inches vs. 80 inches).
However, if you use two twin XL mattresses (each 38 inches wide and 80 inches long), they can be placed side-by-side to create the exact dimensions of a standard king-size mattress.
What equals a king-size mattress?
A king-size mattress is 76 inches wide by 80 inches long. However, there are a few different combinations of individual mattress sizes that can be used to equal the full king size:
Two Twin XL Mattresses
The most common way to achieve king-size dimensions is to place two twin XL mattresses side by side. Each twin XL measures 38 inches wide by 80 inches long, so when put together, they create the full 76 inches by 80 inches of a standard king.
Three Twin Mattresses
Another option is to use three twin mattresses, two side by side and one at the end. Since each twin is 38 inches wide by 75 inches long, lining up three twins results in dimensions of 76 inches wide by 75 inches long, making it just 5 inches shorter than a true king.
California King Split
While not precisely equaling a standard king, two twin XL mattresses placed side by side can create the dimensions of a California king (72 inches wide by 84 inches long). This “split” California king setup provides the width of a king with some extra length.
Two Double Mattresses
In some cases, two double mattresses (each measuring 53 inches wide by 75 inches long) can be pushed together to roughly approximate king-size dimensions. However, the width ends up being 106 inches, which is significantly wider.
Is king-size or queen-size bigger?
Yes, The King size is bigger than the queen size.
- A king-size mattress is typically 76 inches wide by 80 inches long.
- A queen-size mattress generally is 60 inches wide by 80 inches long.
That means a king-size mattress is 16 inches wider than a queen-size mattress, offering significantly more sleeping space.
Conclusion: What is King Size Mattress?
Ultimately, what is a king size mattress? A king-size mattress is a spacious, comfortable bedding option that provides ample room for individuals or couples to sleep soundly.
With its dimensions of approximately 76 inches wide and 80 inches long, a king-size mattress offers generous space to stretch out and move freely during sleep۔
While the investment in a king-size mattress may be higher than smaller options. The benefits of improved sleep quality, reduced motion transfer, and the ability to accommodate co-sleepers or pets can make it a worthwhile long-term investment for many households.
However, it’s crucial to consider the room dimensions and ensure that the king-size mattress fits comfortably without overwhelming the space.
So, if you’re ready to trade restless nights for sound sleep, a king-size mattress might be your perfect match. Sweet dreams!
