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What You Need To Know Before Buying A King-Size Bed

Written by Andrew | Last Updated 2019-10-31

About Andrew

Not only a home designer, Andrew is also the founder of BFA. He always have full enthusiasm for the industry and his job, and he enjoys to share some new ideas to others. His professional advice can help you choose furniture better and home style which fits you.
What You Need To Know Before Buying A King-Size Bed

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Beds and mattresses tend to be expensive and can take up a significant amount of the average person’s budget. Due to this fact, and the fact that beds and mattresses tend to be long-term durable items that you only buy once every 10 years or so, it would be worth your while to do a little research into the different types of beds and mattresses out there on the market, determine what you need, can afford, and what would work best for you based on your budget, home, and tastes, and then go ahead and make a purchase.

In this article, we have put together all of the most important information you need at hand before purchasing your next King-size bed.

King-Size Bed Basics

King Size 


First off, it is important to make a distinction here. King-size beds actually come in two sizes: King, and California King.

A King-size bed is usually 76 inches by 80 inches and is perfect for an adult and pets or children, and can even fit two adults with a large pet or a child.

A California King measures 72 inches by 84 inches, meaning it is shorter than a King-size bed but is 4 inches wider. California King beds can hold an adult along with multiple pets or children, or two adults along with multiple pets or children.

With these measurements in mind, it is easy to see that a King-size bed gives you 16 inches of additional width as compared to a Queen bed, making King-size beds very popular with couples. As such, King-size beds are very often found in large master bedrooms.


The pros of King-size beds are:

Great for couples

Provides more room than a Queen bed

The perfect size for larger or plus-sized individuals

Just right for couples who share their bed with their pets or young children

Exactly the same size as two Twin-size beds pushed together, meaning King-size adjustable beds actually use two Twin-size mattresses on them

You can avoid bumping into your partner while asleep

More space for your pets and kids

More space for family time, such as sitting together and watching movies

It is comforting just to know that you have a great, big bed you can crawl into

More space for adult activities

The more space that your bed takes up in the room, there will be that much less space that you need to vacuum

If you are tall, King-size is the only way to go

King-size is also one of only a few options if you are very heavy


There are, however, a few cons with King-size beds, including the following:

They do not fit easily into smaller rooms

They tend to be very heavy and difficult to maneuver

Even at 80 inches in length, they are not always perfect for taller individuals

If you do not already have a foundation for a King-size mattress, you will have to get one

Mattresses, sheets, and bedding accessories are more expensive for King-sized beds as compared to smaller sizes

Might make it harder to cuddle if you are so far from your partner and cannot subtly break the ice

Large beds tend to make small rooms look even smaller

It might be hard to get rid of, sell, or give away your old mattress, even if it is brand new

Once you upsize to a King bed, it can be difficult to go back to a smaller size

More On Size

As noted above, King-sized beds are 16 inches wider than Queen-sized bed. This provides you with a major upgrade in terms of sleeping area. Since it is equal to two Twin-sized beds, King-sized beds provide ample room for couples who share their bed and should provide ample space to adequately reduce motion transfer between the two sides of the bed. This is an important consideration if you or your significant other is a light sleeper.

Although King-sized beds don’t provide extra legroom as compared to Queen-sized beds, the extra width makes a big difference. Also, since the bed can come in a split design (equal in size to two Twin-sized beds), King beds in these models can be purchased by couples who want to use an adjustable bed or couples who have very different preferences in terms of mattress firmness, comfort, and support.


For single sleepers, King-sized beds are definitely too much in terms of space. If you have a Queen-sized bed, you will already have more than enough room for yourself, and the extra 16 inches of space that come with a King-size bed will give you way more room than you could possibly need as an individual.

However, the extra size of a King-size bed is extremely valuable to couples. This is especially true if you are an active sleeper or often find yourself sharing your bed with your pets or young children. A King-size bed is also perfect if you are a light or restless sleeper and need space of your own to be able to sleep peacefully throughout the night.

Fit For Room

King-sized beds are ideal for rooms that are 10 feet by 12 feet or more. However, everything depends on how much leftover space and storage room you would like to have in your bedroom once your bed is set up. If you have a narrow room, you might find King-sized beds do not allow you to easily move around your bed.

When To Replace Your Old Mattress

We have so far talked about various factors you should keep in mind when you want to buy a new King-size bed or mattress. However, there are still a few things you should keep in mind before you even arrive at that decision.

Before you set out to buy a new King-size bed or mattress, think about the following:

Is your mattress more than seven years old?

Do you toss and turn or during the night or wake with aches and pains?

Does your current mattress have deep indentations or significant sagging?

Has your body shape or weight change significantly since you first bought your current mattress?

Perhaps you just want an upgrade!

If the answer to any of the questions above is a resounding yes, then you should look for a new mattress. However, you need to think about what kind of mattress you want. Some mattresses are durable, such as latex and airbed mattresses. They are also less susceptible to wear and tear. You may have to buy your mattress based on your sleeping habits. Do you plan to use the mattress regularly (such as in the main bedroom), or less so (such as in a guest room)?

Here is how you should choose a new mattress.

Choosing a New Mattress

When you are out to buy a new mattress, you need to consider the kind of sleeper you are, as well as the different features available in marketplace mattresses. If you consider your sleeping qualities while looking at the different types of mattresses available on the market, you will be able to narrow down your options considerably.

Your sleeper profile is determined by the following:

1.Sleep position: We all have our favorite sleeping position. Different positions require different things in terms of support, comfort, and give, so the ideal mattress for you will depend on whether you are a back, side, stomach, or combination position sleeper. Very generally, stomach and back sleepers tend to prefer firm mattresses that provide less body contouring, and softer, more conforming mattresses are better suited for side sleepers.

Weight: Heavy sleepers usually sleep hotter than others and they also tend to experience more sinking on softer mattresses as compared to light sleepers or those sleeping on firmer mattresses. Light sleepers usually prefer softer mattresses. Heavy sleepers tend to prefer firm mattresses. Heavy sleepers tend to prefer supportive mattresses that do not conform much, such as innerspring mattresses or hybrid options.

Sleeping Hot or Cool

Depending on your mattress, you may sleep warmer or cooler. Softer and more conforming mattresses usually restrict the airflow around your body and they tend to trap more heat than firmer mattresses, making you sleep hotter as a result. Depending on the material of your mattress, it can also retain heat. Consider a hybrid mattress or even an innerspring system if you want better temperature regulation for your mattress.

Mattress Materials

Most mattresses on the market are made of one (or a combination) of the materials listed below.

Innerspring mattresses use steel coils to support the comfort layer made of polyfoam. This type of mattress is popular as well as widely available. It is supportive as well and comes in a range of firmness levels depending on your needs. However, these mattresses have shorter lifespans than the alternatives and come with below-average motion isolation. The springs can also start to make noise with time.

Foam mattresses are either made of pure polyfoam or a combination of polyfoam for support and memory foam. They are quite affordable and come with great motion isolation and conform closely to the contour of your body, but they sometimes come with smell or off-gassing and can retain heat. They can also be difficult to move on or over.

Latex mattresses are usually made with either latex or high-density polyfoam for support core, alongside a comfort layer made of natural or synthetic latex. These mattresses are generally durable and you can even buy mattresses made of natural latex. They also conform to your body very well but they can be expensive and hard to find. They can also have chemical odors and provide limited edge support.

Hybrid mattresses use 2 or more inches of memory foam or latex for comfort and they also have pocket coils for support. These mattresses conform well and provide ample support. They also come in a wide range of firmness levels and provide great temperature regulation, but they can be expensive and heavy.

Airbed mattresses use air chambers that are either inflated or deflated to achieve the user’s desired level of firmness or softness. They can be easily adjusted to suit your firmness or softness needs, thereby helping you with the likes of back or muscle pain. You can also purchase airbeds in a split-bed setup. However, these are the most expensive types of mattresses available, are very costly to repair, and can be very noisy.

Making a Choice

King Size 


Using the guidelines above, it should be pretty easy to choose the mattress that best suits your sleeper profile within the budget, size, comfort level, longevity, and type that suits you best. King-size mattresses can be purchased in all of the types outlined above, from hybrid and air to latex and foam. You can also find mattresses with different warranties, delivery options, coverage offers, and more, depending on whether you buy online or in-store.

These are important considerations since, as outlined at the beginning of this article, mattresses and beds are big-ticket items that can eat up a large portion of the average person’s budget, so take the time to look into mattress details, read the fine print, and save where you can on the likes of coverage, delivery (which can easily be $100 or more even for delivery over short distances or in-city), and add-ons such as pillows, frames, sheets, and other accessories which you will need for your new King bed but may not have budgeted for as yet while you make the initial purchase of the bed and/or mattress itself.

King-size beds can give you the space, comfort, support, long-lasting use, and peace of mind that you need for your bed. Go over the different types and varieties outlined above, narrow down what you like and what works for you and go with the option you like best.

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