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Article updated on May 20, 2024 at 6:00 PM PDT

Best King-Size Mattress for 2024

A king-size bed offers a lot of space with a touch of luxury. Here are the best king-size mattresses to buy right now.

Our Experts

Written by 
McKenzie Dillon,
Taylor Leamey
Our expert, award-winning staff selects the products we cover and rigorously researches and tests our top picks. If you buy through our links, we may get a commission. Reviews ethics statement
McKenzie Dillon Writer
McKenzie, a Certified Sleep Science Coach and proclaimed mattress expert, has been writing sleep content in the wellness space for over four years. After earning her certification from the Spencer Institute and dedicating hundreds of hours to sleep research, she has extensive knowledge on the topic and how to improve your quality of rest. Having more experience with lying on mattresses than most, McKenzie has reviewed over 150 beds and a variety of different sleep products including pillows, mattress toppers and sheets. McKenzie has also been a guest on multiple radio shows including WGN Chicago as a sleep expert and contributed sleep advice to over 50 different websites.
Expertise Certified Sleep Science Coach, Certified Stress Management Coach, Bachelor of English.
Taylor Leamey Senior Writer
Taylor Leamey writes about all things wellness, specializing in mental health, sleep and nutrition coverage. She has invested hundreds of hours into studying and researching sleep and holds a Certified Sleep Science Coach certification from the Spencer Institute. Not to mention the years she spent studying mental health fundamentals while earning her bachelor's degrees in both Psychology and Sociology. She is also a Certified Stress Management Coach.
Expertise Sleep, Mental Health, Nutrition and Supplements Credentials
  • Certified Sleep Science Coach, Certified Stress Management Coach

What to consider

Firmness

Sleeping position

Feel

Construction

Body type

Performance

Company policies

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Mattress Tests
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Testers
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Hours Tested
How we test

With five-plus years of mattress-testing experience, we use our different sleeping position and body type perspectives to offer well-rounded, honest reviews.

Our Picks

$1,599 at Brooklyn Bedding
The Brooklyn Bedding Signature mattress on top of a grey bed frame.
Memorial Day Deal
Best king size mattress
Brooklyn Bedding Signature
View details
25% off sitewide with code:
View details
$1,799 at Nectar
dsc04049.jpg
Memorial Day Deal
Best king size memory foam mattress
Nectar Premier
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Up to 40% off mattresses
View details
$1,999 at WinkBed
The WinkBed mattress on top of a metal bed frame in a bright room
Memorial Day Deal
Best firm king size mattress
WinkBed
View details
$300 off all mattresses
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$2,169 at DreamCloud
DreamCloud mattress on a bedframe in a carpeted bedroom
Memorial Day Deal
Best king size bed in a box mattress
DreamCloud Premier Hybrid
View details
Up to 50% off mattresses
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$467 at Walmart
A close up of the affordable Allswell Hybrid mattress on top of a bed frame
Best affordable king mattress
Allswell mattress
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$3,795 at Saatva
saatva-rx-bed-jg-3.jpg
Memorial Day Deal
Best king size mattress for back pain
Saatva Rx
View details
Take $400 off $1000 or more
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$1,899 at Layla Sleep
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Memorial Day Deal
Best king size mattress for side sleepers
Layla Hybrid
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$200 off + 2 free pillows
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Memorial Day sales are here. If you're looking to spend less on your next mattress, now's the time to snag a premium bed from a well-known brand. Our mattress experts have rounded up all the best Memorial Day mattress deals here.

Memorial day sale image
Best Memorial Day Mattress Deals

Sleep soundly year-round with our mattress deals coverage. And be sure to check out all of our Memorial Day sales coverage for this season’s top sales.

See Memorial Day Mattress Deals

A king-size bed is great for spaces where there's ample room. Whether it's for your master bedroom or for a guest bedroom you want to make super comfortable, a king-size mattress is a wonderful way to add some space and comfort to your nap time. When it comes to buying the best king-size bed on the market, there are a ton of options available. The best king-size bed will add comfort and support based on your sleeping position, firmness preference and more. Whether you prefer memory foam or innerspring, there's a king-size mattress for you. There are also various size options under the king-size umbrella -- regular king, California king, split king mattress and more.

After spending hundreds of hours testing over 200 mattresses, we've put together this list of our top picks. Whether you're buying a new king mattress or replacing an old one, we've got options for you. For this list, we considered the accommodating features (especially for couples), fair price, quality of construction and performance of these mattresses. Read on to find out the best king-size mattress models for your needs. 

What is the best king mattress overall? 

A mattress from Brooklyn Bedding Signature on a nice bed frame in a bright bedroom.

The best king-size mattress overall should check several boxes. It should be accommodating for a wide range of sleeping positions and body types, and have solid edge support and motion isolation for couples who share a bed. The Brooklyn Bedding Signature mattress fits the bill to a tee. Plus, it offers excellent value. 

Video: Best king mattress for 2024

Watch CNET Video Producer Owen Poole review the best king mattresses for 2024.

Read more: Best California King Mattresses for 2024

Best king size mattresses of 2024

Memorial Day Deal

Brooklyn Bedding Signature

Best king size mattress

Our take - Kicking off our best king-size mattress review is the Brooklyn Bedding Signature mattress. It fits the bill for your average sleeper looking for a quality king bed that won't cost too much.
Type
hybrid mattress
Firmness
Soft: (3) Medium: (5) Medium firm: (7)
Trial
120 nights
Warranty
10-year limited warranty
25% off sitewide with code:
$1,599 at Brooklyn Bedding
Compare
Memorial Day Deal

Nectar Premier

Best king size memory foam mattress

Our take - It's the best king-size bed for people who want the traditional memory foam feel you can find in a Tempur-Pedic mattress at a more wallet-friendly price. It has a thick memory foam construction, giving it a relieving and slow-responding memory foam feel. It takes a few seconds for your body to activate the foam, but once it does, the memory foam slowly contours around your curves and nestles you into the bed. 
Read full review
Type
memory foam mattress
Firmness
medium to medium-firm or 6
Trial
365 nights
Warranty
forever warranty
Up to 40% off mattresses
$1,799 at Nectar
Compare
Memorial Day Deal

WinkBed

Best firm king size mattress

Our take - WinkBed is an affordable luxury mattress that’s widely accommodating. The steel coils and fluffy pillow top make the WinkBed mattress a standout choice if you’re looking for a supportive and durable bed. 
Read full review
Type
hybrid mattress
Firmness
3 firmness levels | softer: medium-soft (3) | luxury firm: medium (5) | firm: medium-firm (7) | plus: firm (8-9)
Trial
120 nights
Warranty
lifetime warranty
$300 off all mattresses
$1,999 at WinkBed
Compare
Memorial Day Deal

DreamCloud Premier Hybrid

Best king size bed in a box mattress

Our take - The DreamCloud Premier Hybrid is the best king-sized bed in a box mattress. It’s a premium, 13-inch-thick bed that combines layers of gel memory foam and durable coils. The hybrid construction gives the DreamCloud Premier mattress a nice mix of pressure relief and durability, with reinforced edges and reduced motion transfer. 
Read full review
Type
responsive memory foam mattress
Firmness
medium to medium-firm or 5 to 6
Trial
365 nights
Warranty
lifetime warranty
Up to 50% off mattresses
$2,169 at DreamCloud
Compare

Allswell mattress

Best affordable king mattress

Our take - You may not be familiar with Allswell, but you're likely familiar with its parent company Walmart. As its entrance to the bed-in-a-box game, Walmart introduced the affordable Allswell mattress. The Allswell mattress is a good hybrid mattress for the price of a low-budget foam mattress, giving it a well-deserved spot on this best king bed list. 
Read full review
Type
hybrid mattress
Firmness
Medium to medium firm: (6)
Trial
100 nights
Warranty
10-year limited warranty
$467 at Walmart
Compare
Memorial Day Deal

Saatva Rx

Best king size mattress for back pain

Our take - If you live with back pain, you need a king-sized mattress that relieves it, not adds to it. The Saatva Rx mattress was designed to alleviate back pain from chronic conditions like scoliosis or sciatica. 
Read full review
Type
hybrid mattress
Firmness
medium
Trial
365 nights
Warranty
lifetime warranty
Price
$$$
Take $400 off $1000 or more
$3,795 at Saatva
Compare
Memorial Day Deal

Layla Hybrid

Best king size mattress for side sleepers

Our take - In a sea of bed-in-a-box mattresses, brands have to add a little sauce to their designs to make them stand out. The Layla Hybrid is unlike most other hybrid mattresses because it comes with a two-in-one deal. What I mean is that it's flippable, and you can sleep on each side of the mattress comfortably. 
Type
flippable hybrid mattress
Firmness
Medium to medium firm: (6)
Trial
120 nights
Warranty
10-year limited warranty
$200 off + 2 free pillows
$1,899 at Layla Sleep
Compare

Other mattresses we've tested

Brooklyn Bedding Aurora Luxe: Many mattresses make embellished claims about their cooling abilities, but the Brooklyn Bedding Aurora Luxe effectively works to cool. With multiple cooling enforcements including cooling foam, Titan Cool technology and a cooling cover. With three firmness levels to choose from and a strong hybrid construction, it's a versatile mattress that works for any sleeping position and body type.

Purple mattress: There aren't many mattresses out there like the Purple. It's made with a special gel-like material the brand calls its GelFlex Grid. It's squishy and firm at the same time, offering a nice balance of support and pressure relief. It has a medium firmness level that suits all sleeping positions.

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How we test king size mattresses

CNET editors pick the products and services we write about based on editorial merit. When you buy through our links, we may get a commission. 

Testing a king mattress is similar to how we test most of our mattresses, and we pay attention to a handful of important factors. 

  • Firmness: The measure of how firm or soft a mattress feels is an important factor in deciding if a bed is suitable for you or not. Firmness, a lot of the time, indicates how pressure-relieving or supportive a mattress feels. Side sleepers usually like a softer mattress because it offers more give, and thus, more pressure relief around the hips and shoulder areas. Back and stomach sleepers, on the other hand, tend to sleep better on firm beds that keep the spine properly supported. We test firmness by using our judgment and deliberating amongst team members. It's easier to test firmness when you have 100 different mattresses to compare it to.
  • Construction and features: We take a close look at the construction of a mattress, which is a good tell on how it feels and how supportive it is for certain body types. We also consider any extra or special feature a mattress might have to stand out from the rest of the competition. Is it cooling? Does it have a special cover made with Celliant fabric or cashmere? Does it have an extra durable construction? We take all of this into consideration when testing mattresses and delegating best list picks. 
  • Performance: This refers to motion isolation, temperature regulation and edge support abilities. How well does a mattress perform when we put it to the test? We test motion isolation by having couples judge how it sleeps, or placing a glass of water at the end of the bed to see how much it shakes when we move. Edge support is tested by laying on the sides, bouncing and checking how sturdy it feels. Personal experience is also how we test temperature, with the help of a thermometer gun. 
  • Feel: Feel is a separate topic from firmness. This refers to how a mattress' materials are perceived. Is it dense and morphy like memory foam, neutral and soft like neutral foam, or supple and bouncy like latex foam? We like to describe the feel as best we can since you're unable to feel it through your computer screen. 

Read more on how we test mattresses.

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What to look for in a king mattress

When looking for the best mattress, you should take in some key considerations. You should follow the same guidelines when looking for a king-size bed, with the same considerations. 

  • Hybrid vs. foam: The more you weigh, the more supportive your mattress should be. Hybrid beds are best for all body types, including those over 230 pounds, while foam beds are typically ideal for people under 230 pounds. 
  • Firmness is a key indicator of how accommodating a bed will be. One of the first things to think about while looking for the best king mattress is firmness. Are you a side sleeper, back sleeper or stomach sleeper? Side sleepers typically need softer mattresses, while back and stomach sleepers benefit from a firmer mattress because having a firm bed will help support the spine, decreasing back pain. Medium beds right in the middle are perfect for combination sleepers. 
  • Key features like cooling tech, edge support reinforcements and Celliant covers can help you decide if a bed fits your lifestyle and circumstances. Strong edge support is great for couples who share a mattress, while beds with Celliant covers are perfect for people with active lifestyles. 
  • Price matters when looking for a king bed. The bigger the bed the more expensive it is. King beds are often more than $1,000, but there are budget options like Allswell to consider if you're looking for maximum savings. 

Check out our size guide to compare mattress sizes. If you're looking to upgrade your whole sleep setup, we have suggestions for sheetspillows and other sleep essentials

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Who is a king mattress best for?

Not everyone needs a king-size bed, but it is mighty convenient and comfortable during these situations:

  • Couples who want more space than a queen size offers
  • Taller people who don't want to feel cramped (queen beds are about 6.6 feet long)
  • Sleepers who share a bed with their kids (king beds are wider than California king beds)

King and California king mattresses are the most popular of the king variety, but a host of beds are technically classified as king. Here's an overview of the different types of king beds if you're looking for something a little different. 

King-size mattress types

TypeDimensions
Standard king (aka Eastern king) 76 x 80 inches
California king 72 x 84 inches
Split king Two twin beds (36 x 80 inches)
Split California king Two twin XL beds (36 x 84 inches)
Alaskan king 108 x 108 inches
Wyoming king 84 x 84 inches
Texas king 80 x 98 inches
Show more

King-size mattress FAQs

What is a good price to pay for a king size mattress?

The average king mattress costs around $1,000 or more, depending on how premium of a mattress you're looking to buy. More affordable options are available for around $500 for budget shoppers who are looking to pay a little less.

How big are king mattresses?

A king-size mattress measures 80 inches long by 76 inches wide and 4 inches thick. Compared to a queen-size mattress, it offers the same length but with 16 additional inches in width.

What's the best king mattress on the market?

Typically, the best king-size mattress is a bed that's able to accommodate two sleepers because it's the most popular size among couples. Some of the best king beds have pocketed coils and reinforced edge support, can isolate motion well and/or have a breathable design. Some of CNET's picks include:

  • Brooklyn Bedding Signature
  • Winkbed
  • Nectar Premier 
  • Layla Hybrid
  • Allswell