
King vs. Full Size Mattress: Which Mattress Size is Right for You?

- King mattresses offer significantly more sleeping space (76 inches wide by 80 inches long) compared to full mattresses (54 inches wide by 75 inches long). Consider the dimensions in relation to your bedroom size and personal preferences.
- King mattresses are ideal for larger master bedrooms (at least 12 feet by 12 feet) and are suitable for couples or those who want ample space. Full mattresses are a cost-effective choice for single sleepers with smaller bedrooms (around 10 feet by 10 feet) who still desire spacious bedding.
- King mattresses accommodate a broader range of sleepers, while full mattresses are recommended for single sleepers. Consider factors like mattress type (memory foam, latex, innerspring, hybrid) and variations (California king, split king) for personalized comfort.
Most people don’t confuse a full mattress with a king size bed. A full mattress is significantly smaller than a king, offering 2030 fewer square inches of sleeping space.
The king size bed is typically the largest mattress size most companies offer, while a full mattress falls in the middle of the mattress size range.
Neither size is necessarily worse or better than the other. A king mattress is often expensive and heavy, but it provides two people with a wide amount of space and is a great way to upgrade a master bedroom.
A full mattress is good for single sleepers who want a spacious mattress without dominating the bedroom, leaving room for other furniture.
Difference Between King and Full Mattresses
These two mattress sizes are designed to meet the varying needs of different types of sleepers. One option is ideal for single adults, while the other is better suited for couples.
The full mattress is 22 inches narrower and five inches shorter than the king-size mattress, making each size better adapted to specific room dimensions and preferences.
Specifications Comparison
Feature | King Size Mattress | Full Size Mattress |
Width | 76 inches | 54 inches |
Length | 80 inches | 75 inches |
Recommended Room Size | 12 feet by 12 feet | 10 feet by 12 feet |
Comparing Full vs King Mattresses Comfort Levels
The debate between king and full mattress comfort is a nuanced discussion that goes beyond surface area. Comfort isn’t universal—it’s a deeply personal experience shaped by individual preferences for space and support.
For many, the choice between a king and a full mattress hinges not only on the size of the bed but also on how the bed’s dimensions influence relaxation. A king mattress offers generous space, making it ideal for couples or those who enjoy extra room to stretch out.
In contrast, a full mattress, while more compact, delivers a cozy feel that can enhance the sense of comfort for solo sleepers or those with limited bedroom space.
Comfort levels in both king and full mattresses are not one-size-fits-all. While the king provides enough space to minimize disturbances between partners, it can also offer a luxurious sense of freedom for individual sleepers who prioritize roominess.
The full mattress, however, creates a snug sleeping environment, which some find more comforting and restful. The choice between a soft, plush feel and a firm, supportive surface can dramatically impact the perception of comfort in either size.
A king-size mattress, with options ranging from ultra-plush to firm, allows for more customization in sleep experience, particularly with adjustable models that cater to individual preferences.
On the other hand, full mattresses deliver targeted comfort with similar firmness options but in a more condensed form. This makes them an excellent choice for those who prefer a denser, more contained sleeping space.
Factors such as sleep position, body weight, and room size all play a role in determining which mattress offers the best comfort. For example, side sleepers may favor a softer feel, while back or stomach sleepers often lean toward firmer support, regardless of mattress size.
The discussion ultimately highlights the subjective nature of comfort, where each individual’s preferences for firmness, support, and space come into play. The king mattress, with its ample room, provides a luxurious sleep setting that many find synonymous with comfort.
In contrast, a full mattress offers a practical, intimate sleeping experience that can be equally cozy and supportive. It’s clear that comfort is not solely defined by dimensions; it’s about the experience one seeks from a good night’s rest.
Whether it’s the expansive comfort of a king or the inviting snugness of a full, each mattress size brings its unique advantages to the table.
What is a King Mattress?
A king size mattress is the largest size most mattress brands offer, measuring 76 inches wide and 80 inches long. They’re an excellent way to complete a master bedroom at least 12 feet by 12 feet. Couples often choose a king size mattress to share, but single adults can enjoy the luxurious amount of space a king bed offers.
Who Would Get a King Mattress?
A king-size mattress is an excellent choice for couples who value extra room while they sleep, particularly if they share their bed with children or pets.
The added space allows everyone to stretch out comfortably, reducing disturbances and preventing anyone from accidentally ending up at the edge of the bed.
If you tend to change positions frequently during the night, a king mattress offers enough space to shift around without the risk of rolling off. This additional room supports a restful, undisturbed sleep by allowing each sleeper the freedom to move as needed.
For those living in open-plan spaces, a king-size mattress can serve as a luxurious focal point. Without the limitations of smaller bedrooms, a king mattress adds style and functionality, bringing an inviting, expansive feel to the room.
Variations on a King
Because the traditional king mattress is a popular size, it’s not surprising that there are numerous variations with different dimensions.
There’s the California king size mattress, which is 4 inches longer and 4 inches narrower than a standard king. The Cal king mattress is sometimes referred to as the Western king, and in turn, a standard king is sometimes called an Eastern king. The extra length of a California king bed can offer tall people greater comfort than a traditional king mattress.
A split king has the same dimensions as a traditional king mattress. The mattress is cut in half, with each side equal to a twin XL size mattress. This design choice allows each side to move independently on an adjustable bed or choose their preferred sleeping position on an adjustable bed.
Many mattress companies allow you to choose a different firmness on each side, making it easier for couples with different sleeping styles to share a mattress comfortably. You can read our split king vs. king mattress guide for more information.
There are also split California king beds, although these are harder to find than a standard split king size mattress. Split California king beds require specialized bedding, as do regular split king beds.
Although uncommon, there’s also oversized king mattresses. Most mattress companies do not carry these sizes, so if you want one, you may have to special order it from a custom mattress maker.
Benefits of a King Size Mattress
1. Excellent for Couples
A King Size Mattress offers ample space, making it an ideal choice for couples.
Each person has plenty of room to sleep comfortably without disturbing one another, reducing any accidental elbowing or jostling for space during the night.
2. Great for Family Bonding
It’s also a wonderful option for parents with young children who occasionally share the bed.
The extra room is perfect for family bonding, reading bedtime stories, or simply enjoying quality time together before sleep.
3. Wide Range of Bedding Options Available
With its popularity, finding bedding and accessories for a King Size Mattress is easy.
You’ll have a broad selection of sheets, duvets, comforters, and other bedding items, making it simple to personalize and enhance your bedroom’s aesthetic appeal.
Drawbacks of a King Size Mattress
1. May Overwhelm Smaller Bedrooms
To fit a King Size Mattress comfortably, a spacious bedroom is recommended. In smaller rooms, the King’s large footprint can dominate, leaving little space for essential furniture or free movement.
2. Challenging to Move and Handle
King Size Mattresses are heavy and can be difficult to move, especially in spaces with narrow hallways or tight staircases. Shifting or transporting this size usually requires extra assistance and some careful planning.
3. Higher Cost
With the luxury of size comes a higher price. King Size Mattresses are typically more expensive, both in terms of the mattress itself and the accessories.
It’s essential to consider your budget when opting for a King Size bed, as it represents a significant investment.
Oversized Mattress Name | Dimension |
---|---|
Super king/Grand king/Athletic king/Texas king | 80 inches by 98 inches |
Wyoming king | 84 inches by 84 inches |
Alberta king | 96 inches by 96 inches |
Alaskan king | 108 inches by 108 inches |
What is a Full Mattress?
A full size mattress usually measures 54 inches wide and 75 inches long. This makes the size an expansive option for single sleepers with smaller rooms.
Full size mattresses are sometimes called double beds, which name came from the time when they were popular for couples. Once queen and king size mattresses were introduced in the 1950s, full beds grew less popular with people who wanted to share a mattress.
Who Would Get a Full Mattress?
Full mattresses are perfect for single sleepers or couples who enjoy close quarters while sleeping.
This size is also ideal for young adults, teens, and older children as they transition into larger bed sizes, providing ample space for one person to stretch out comfortably.
Full mattresses are a popular choice for guest rooms, studio apartments, and dorms. They offer enough sleeping area for one person while leaving additional floor space for furniture.
For those with limited space, a full bed strikes a balance between comfort and functionality.
If you’re taller but don’t need extra width, consider a twin XL instead of a full mattress.
Twin XL beds offer five additional inches of length, providing more legroom without increasing the mattress’s width. This can be a practical option for taller individuals seeking a more personalized fit.
Variations on a Full
A full size mattress doesn’t have as many variations as a king mattress. There’s the full XL mattress, which features 5 more inches of legroom than a traditional full bed. A full XL mattress is great for single sleepers over 6 feet and 2 inches tall, but it’s not a standard size and may need to be custom ordered from a mattress manufacturer.
While not a variation, a full bed is often compared to a queen size mattress, which is 6 inches wider and 5 inches longer than a full mattress. They’re fairly close in size, and many loose bedding items like comforters are sold with the “Full/Queen” label. Half a foot may not seem like much, but the extra width is enough to make a queen bed the better mattress for couples.
Advantages of a Full Size Mattress
1. Ideal for Solo Sleepers
If you sleep alone, a Full Size Mattress is an excellent option. It provides a cozy and ample sleeping area, perfect for one person.
It’s not so large that it feels overwhelming, and it allows you to stretch out, switch positions comfortably, or add extra pillows for an inviting sleep experience.
2. Perfect for Compact Bedrooms
For those with limited space, a Full Size Mattress is a true space-saver. Larger mattresses like Queens or Kings can overwhelm a smaller room, making it challenging to fit other furniture.
A Full Size Mattress offers the luxury of a bigger bed without taking over your room, leaving more space for additional essentials.
3. Budget-Friendly Choice
If you’re cost-conscious, a Full Size Mattress is a wallet-friendly option.
Not only is the mattress itself typically more affordable, but bedding and accessories like sheets and comforters are also usually less expensive than those for larger sizes. This can lead to considerable savings over time.
4. Easier to Move and Handle
Full Size Mattresses are much more manageable when moving, whether it’s from room to room or between homes.
You won’t need a large team to navigate it through narrow hallways or staircases. Its lighter weight and smaller size make it easier to transport without stress.
Disadvantages of a Full Size Mattress
1. May Feel Short for Taller Individuals
If you’re over 6 feet tall, a Full Size Mattress may feel a bit restrictive, with your feet possibly hanging off the edge, leading to discomfort.
Taller sleepers may find a Queen or King mattress more accommodating and restful.
2. Less Room for Couples
For couples, a Full Size Mattress might feel a bit cramped, particularly if one or both are active sleepers.
With limited space to share, you may find yourself frequently competing for room, which could lead to disrupted sleep and a less comfortable experience.
Factors To Consider When Choosing Between a Full vs King Mattresses
Three main things differentiate a king mattress from a full bed:
- Mattress dimensions and suggested room size
- Price
- Who should sleep on one?
You should also consider the following factors when asking yourself which is the best mattress for you.
1. Dimensions of Your Bedroom
A full size mattress is 22 inches narrower and 5 inches shorter than a standard king mattress. These dimensions allow a full bed to fit into smaller bedrooms, leaving room for a dresser and other bedroom furniture.
The smaller size also makes it easier to lift, helpful when moving the mattress and changing sheets.
While a full mattress is a great way to complete a bedroom roughly 10 feet by 10 feet (or about 100 feet of space), we can’t recommend a king mattress for anything smaller than 12 feet by 12 feet. If you have a large master bedroom, a standard king size mattress is an excellent choice. Otherwise, you’re probably better off with a full mattress.
2. Number of People Sharing the Bed
The number of people sharing the bed is an important consideration. For single sleepers or couples who enjoy close proximity, a Full mattress might be adequate.
It provides cozy sleeping space without feeling too cramped, especially if both individuals are comfortable with limited space.
However, if you have a partner who moves around a lot or if you occasionally share the bed with family members or pets, a King mattress may be a better fit.
The extra room can prevent disturbances from movements and provide a more restful sleep environment for everyone.
3. Future Plans and Lifestyle
Thinking about your lifestyle and future goals can help guide your decision. If you’re currently single with no immediate plans for family expansion, a Full mattress might meet your needs for years to come. It’s a practical choice that works well in the present.
Conversely, if you’re in a committed relationship or plan to start a family soon, investing in a King mattress may be a wise choice.
It provides more space and flexibility, potentially saving you from the future expense and inconvenience of upgrading to a larger bed as your household grows.
4. Budget and Affordability
Your budget is another key factor when deciding between a Full and a King mattress. Full mattresses are generally more affordable, making them a practical option for those with limited funds.
This affordability extends to accessories and bedding, which are typically less expensive for Full sizes.
For those with a higher budget, a King mattress can be a worthwhile investment, offering added luxury and space.
Since mattress prices vary by brand and model, it’s essential to explore different options to find a mattress that balances quality with affordability, providing the best value for your budget.
5. Temperature Regulation Needs
If you tend to sleep warm, you may want to think about how mattress size can impact temperature regulation. In a Full mattress, where the sleeping area is smaller, body heat may build up more quickly, which could be uncomfortable for hot sleepers, especially in warmer climates.
Additionally, for couples, sharing a Full mattress may lead to increased warmth due to close proximity.
A King mattress, by contrast, offers more space, which can allow for better airflow and cooler sleep. With the extra room, there’s less direct body contact, which can help reduce heat buildup.
If temperature regulation is a priority, a King may be a better choice for a comfortable sleep environment.
6. Maintenance and Mattress Lifespan
Different mattress sizes also come with unique considerations for maintenance and durability. A Full mattress, being smaller, may be easier to rotate and handle, which can extend its lifespan by ensuring even wear.
This is particularly useful for single sleepers who may use only one side more frequently. Regular rotation helps maintain comfort and prevents sagging over time.
A King mattress, though heavier and more challenging to maneuver, can still be kept in great shape with regular care. The additional sleeping surface means weight is distributed across a larger area, which may prevent wear and tear from being concentrated in one spot.
However, you may need assistance when rotating or cleaning a King mattress due to its size.
Other Mattress Sizes
Mattress Size | Dimensions (IN) |
---|---|
Twin | 38 inches by 75 inches |
Twin XL | 38 inches by 80 inches |
Full | 54 inches by 75 inches |
Queen | 60 inches by 80 inches |
King | 76 inches by 80 inches |
California King | 72 inches by 84 inches |
Most mattress brands carry the six standard mattress sizes. Twin and twin XL size mattresses are the only bed sizes we haven’t discussed yet.
Both of these mattress sizes are excellent options for single sleepers who want to make the most of a smaller bedroom. Many parents choose a twin size mattress for a toddler that’s outgrown their crib, while other parents choose a twin XL mattress for a young child to accommodate a teenager’s last growth spurt.
A small guest room may also contain a twin bed, while many college dorm rooms contain a twin XL mattress to accommodate most students. However, some colleges use full mattresses instead of twin beds, so it’s a good idea to double-check with the administration before buying any bedding.
Mattress Types to Consider
Most types of mattresses come in full and king sizes, so it’s not as if you’ll have more options if you choose one size over the other. Once you’ve decided what size you’re looking for, you should consider the best type of mattress for your needs. For example, people with a chronic pain condition may want a mattress focused on pressure relief.
Memory foam mattresses conform to a sleeper, cushioning joints and providing full-body support and pressure relief. Traditional memory foam tends to retain body heat, letting it build up and disturb a sleeper’s rest. Many manufacturers have improved the traditional recipe for better heat dispersion, such as mixing in cooling gels to create gel foam.
People hunting for a budget mattress that doesn’t skimp on quality often gravitate toward memory foam beds. They’re usually quite affordable, with many quality memory foam mattresses costing under $1000.
Latex foam is a contouring material similar to memory foam, though it may feel slightly firmer and cooler. Many eco-conscious shoppers choose a natural latex mattress over a memory foam bed, although budget shoppers may have to pick another mattress type.
A traditional innerspring mattress is inexpensive and bouncy, with thin comfort layers sandwiching a coil support system. Many people have moved away from sleeping on an innerspring mattress because they enjoy the pressure relief a more cushioning mattress provides.
Hybrid mattresses mix innerspring coils with a conforming foam top. The design relieves more pressure on the body than a traditional innerspring mattress while also feeling more buoyant than a foam mattress.
However, some sleepers choose another mattress type because hybrids tend to have high price tags.
Choose the Right Mattress for Your Sleep Needs
For couples who appreciate a spacious sleeping area, especially if children or pets are involved, a king-size bed offers the perfect solution. On the other hand, a full-size bed is well-suited for single adults, teens, or those with smaller bedrooms.
Getting sufficient, quality sleep is crucial for your overall well-being, so selecting a mattress that allows you to sleep comfortably should be a priority.
If you’re finding it challenging to get restful sleep due to limited space, it might be time to consider a larger mattress.
Consult one of our Sleep Specialists or explore our collection online to find the perfect mattress size for a peaceful, rejuvenating night’s sleep.
Frequently Asked Questions
Do two full size mattresses make a king?
No, pushing two full size mattresses together won’t add up to another mattress size. It would create a sleeping space about 108 inches wide and 75 inches long.
You can create a king mattress by pushing two twin XL beds together. This is called a split king, and it may be done to give couples more customization choices when it comes to mattress firmness and adjustable bed positions.
Are there longer full size beds?
The full XL size mattress is designed to offer 5 more inches of sleeping space than a standard double bed. This makes the mattress a good fit for any single sleeper over 6 feet and 2 inches tall.
However, since full XL beds aren’t considered a standard mattress size, it might be better to shop for a queen size mattress, which is the same length as a full XL with 6 extra inches of width.
Should I get a Cal king or a king?
While similar, king and California king mattresses often suit different kinds of sleepers. A king mattress is good for couples who want to share a bed without overcrowding their partner. A California king mattress is also good for that, but its narrower and longer dimensions make it an excellent fit for taller sleepers.
To learn more about which is the best mattress for you, check out our California king vs. king mattress guide.
Is there a bed bigger than a California king?
Yes, a traditional king size bed is technically larger than a California king. Though they share the same perimeter, a king mattress has 6080 square inches of space, while a California king only offers 6048 square inches.
There are also oversized king mattresses, such as the Texas king, Wyoming king, and Alaska king. These extra-large mattresses usually must be special ordered from a manufacturer.
What size bed do most couples have?
Most couples share a queen size mattress because it’s more affordable and fits in smaller bedrooms than a king mattress. That’s not the same thing as a queen mattress being the best mattress for couples. Many sleepers love the amount of personal space a king size mattress offers.
Do you want to share a mattress with someone? We strongly recommend against buying a full size mattress. While the bed is also known as a double, two people often feel cramped and confined on a full mattress.
Conclusion
King mattresses and full beds usually suit different types of sleepers, so it shouldn’t be hard to decide which is the better mattress for you. A king mattress is well-suited for anyone with a large budget and bedroom who wants to share with a partner, while a full mattress is excellent for single sleepers who want to stretch out in a smaller bedroom.
Of course, if neither of these options is what you’re looking for, you can consider other mattress sizes like a queen size bed.