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Recommended King Size Mattresses

If you’re considering upgrading to a king-size mattress, then we’ve provided a one-stop guide to help you decide the best mattress to suit you. Below you will find some helpful reviews, comparisons, and ratings of some of the best mattresses on the market.

Last updated: June 2024

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  • Highly supportive with a soft contour
  • Flexible financing options at 0% APR
  • 365 night sleep trial
  • pros365-night trial
  • prosExcellent customer service
  • prosForever lifetime
  • prosMade for all sleep styles
  • consNot ideal for those that prefer a plush mattress
  • consNot the cheapest option
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  • Made by Sealy – America’s Mattress of Choice
  • Proprietary cover dissipates heat
  • 100 night sleep trial
  • pros130 years of experience
  • prosHybrid option available
  • prosInnovative cooling technology
  • consCover is not removable
  • consCover is not machine-washable
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  • Newly released Emma CliMax Hybrid
  • Perfect for plus-sized sleepers and couples
  • 365 night sleep trial
  • prosSupportive while relieving pressure
  • prosSuitable for all types of sleepers
  • prosZero motion transfer
  • consLimited mattress options
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*Featured prices and terms can be updated. Free offers may include additional terms.

Everything to Know about King-Size Mattresses

If you’re used to sleeping on a single or double mattress, before purchasing a king-size mattress you might have to consider some logistical factors. For example, you’ll have to invest in a new bed frame to accommodate a larger mattress. Despite this increased cost upfront, there are plenty of long-term benefits and perks of buying a king mattress too.

How Big Are King Size Mattresses?

One of the first things to take into account when looking at purchasing a king mattress is the size, as this will really affect your entire decision. A king mattress is usually fit for a king, so the standard size will typically stretch to 76 x 80 (W x L) inches.

Since this is much bigger than a standard double bed, you need to consider the amount of floor space you have available. You should also keep in mind the rest of the bedroom furniture, as this may need to be rearranged to make space for your new bed. If you live with your partner, then you should also check there’s enough space in the room to move around freely, so it doesn’t take over the bedroom.

If you’re planning to move into a new house, then this is the ideal opportunity to map out and manage your bedroom space from scratch. So, if you mark out where the king-size mattress would go, then you can work out the available floor space you have left. You can also use these markings to help plan any additional bedroom furniture you’re hoping to buy.

Recommended Mattresses

These are some of the most recommended mattresses that are available in king size:

When Should You Consider Investing in a King Size Mattress?

There are a number of good reasons to consider purchasing a king size mattress. These are some of the most popular motivations behind choosing a larger mattress:

1. You’re looking for more space – The main perk of owning a king bed mattress is that you can enjoy the sheer luxury of so much extra space. If you’re used to a double bed, a king size will finally give you the chance to sprawl without restriction. You can stretch your arms and legs as much as your heart desires. Having so much extra leg-room and elbow room will allow you to have a more comfortable and better-quality sleep too.

2. You’re a restless sleeper – If you’re a restless sleeper, or naturally twist and turn in your sleep, then you might find a double bed constraining. Occasionally, your arms or feet might dangle over the edge of the bed, or you might even fall off completely! So, this is where king bed mattresses can come to the rescue, as there’s enough room to move as freely as heart desires and sleep in any position you feel like. You also won’t bother your partner so much as there’s more than enough room for everyone.

3. You have a health condition – If you suffer from a health condition like joint pains or arthritis, then it might be hard to sleep the whole night in one position. So, the king mattress offers a more spacious option. 

4. You have a family – If you have a growing family or you adore curling up in bed with your pets, then a king-size mattress is the perfect place for everyone to chill. You can all snuggle and relax, on a lazy Sunday morning, or binge-watch movies together in the comfort of one exceptionally large and comfortable bed.

Our top picks for June 2024

king size bed

King Mattresses vs California King Mattresses

When you’re shopping for a king-size mattress, you’ll find that you also have the option to look for a California king mattress size. The difference between California king mattresses and king mattress is the size. The California king mattresses size is usually 72 inches wide by 84 inches long. This means cal king mattresses size is four inches longer than the king mattress size, which is great for taller people. It is also one of the most expansive beds you can find.

Cal king mattresses are therefore a perfect choice if you’re looking for that added extra comfort and space. The price of the cal king and king mattress is usually the same too. The only downside to the cal king mattress size is that you might have to invest in a larger bed frame, new sheets, and covers. However, if you’re upgrading to a completely new sized mattress, then this would be the case anyway.

Our #1 Choice
Hot Sleepers
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Edge Support
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DreamCloud now offers three luxury mattress models instead of just one! The DreamCloud is 14″ tall, 5-layer luxury hybrid mattress that offers premium support, luxury, contouring, and coolness. Their more premium model is the DreamCloud Premier, which is 15″ tall, 6-layer premium hybrid mattress with a contouring Euro Top and glorious cashmere blend cover. And their latest luxurious offering is the DreamCloud Premier Rest mattress, which, standing at 16” tall, is one of the highest mattresses on the market, plus it has a unique cashmere Pillow Top.
Pros & Cons
pros iconHigh quality materials
pros iconSuitable for couples & heavier builds
pros iconPremium edge support for people with limited mobility
pros iconCombines comfort & support
cons iconLimited sinking
cons iconHeavy & difficult to move
Hot Sleepers
Side Sleepers
Motion Isolation
Edge Support
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Nectar makes mattresses that are designed for people with all kinds of sleep preferences. No matter which side you sleep on, the mattress offers optimal comfort. Nectar provides a lifetime warranty and a 365-day sleep trial for their mattresses.
Pros & Cons
pros iconFirm foam with reliable support
pros iconTemperature control cooling properties
pros iconLifetime warranty & 365-night sleep trial
cons iconMade overseas
cons iconLimited variety

Types of King Size Mattresses

As soon as you’ve decided between a king mattress or a California king mattress, then the next step is to choose the type of mattress to suit your needs. There are a few mattress types to choose from, and we have included some recommendations for you to take into consideration.

Memory Foam King Mattresses

Memory foam mattresses are a good option if you’re looking for a comfortable king mattress that can support every kind of sleep position. The foam will contour to the shape of your body. Foam mattresses are also ideal as they provide targeted support to any injured areas and they can help relieve pressure points. This type of mattress will hug your body more, so it will have less bounce than other styles.

memory foam

The Nectar memory foam king mattress offers a few layers of support to find the right balance of softness and firmness. It also features a cooling gel foam layer, to enhance airflow and breathability. A king mattress and a California king mattress from Nectar usually costs $1,398. They also have special offers. The current offer for the king mattress sale and the California king mattresses sale is $999.

Latex King Mattresses

If you’re on the lookout for a natural and sustainably sourced alternative to foam, then latex would be an ideal option. The latex material has numerous benefits, including being naturally antibacterial and naturally hypoallergenic. It can also offer a similar, comfortable and snug sensation as memory foam. If you’re eco-conscious, these mattresses are a great choice, but they are sometimes pricier than other options.

If you decide on this type of king mattress, then PlushBeds offers natural latex mattresses. The regular price for a latex king-size mattress and a latex California size mattress is $2,899. They also regularly have special deals. The current offer for the king-size mattress and the California size mattress is $1,699.

Hybrid King Mattresses

With a Hybrid king-size mattress, you can get the best of both worlds. These mattresses are typically formed with layers of memory foam and gel foam for enhanced airflow, cooling, and pressure relief and coil springs for added support and lift.

Casper offers a great range of popular hybrid king mattresses. The regular price for a king mattress and a cal king mattress is $2,995. They also have seasonal deals. The current king mattress sale price and the cal king mattress sale price is $2,696.

Luxury King Mattresses

If you’re looking to upgrade to a king-size mattress, then it makes sense that you’ll want a luxurious sleeping experience. So, a luxury king mattress will offer all that and more. Luxury mattresses feature premium-quality materials for comfort and durability. Many also offer a hybrid combination of advanced coil and foam technology. Plus, luxury mattresses usually come with either a pillow top or a Euro top surface, for a smooth and luxurious feel and extra cushioned comfort.

Saatva offers a range of luxury king-size mattresses. Their flagship classic mattress is a luxury hybrid innerspring mattress, which has been approved by chiropractors for its comfortability, support, and durability. The king-size mattress and California mattress costs $1,599.


When choosing the right sized mattress for you, there are many factors to consider. First, of course, is to keep in mind what size are king size mattresses and whether they can fit in your home. If you’re looking for a spacious and comfortable place to rest your head, then a king-size mattress is a worthy investment. These mattresses are ideal for people who love to sprawl out and sleep in a range of positions. Another benefit is that they are perfect for those with families or pets. The main downside is that you’ll have to ensure you have enough space. The best advice is to do some research before you make your decision, and you can explore our reviews and recommendations for more information.

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