The best king size mattress 2024: with full reviews

The best king size mattress can offer you a huge amount of sleep space — measuring at 76x80 inches — and its roominess means it's a great size for couples. However, it can be difficult to search for the best king size mattress for you, especially when budget and comfort preferences impact your decision making. That’s why our team of sleep product experts have rigorously tested a wide range of king size beds to collate a concise, narrowed-down list of the very best king size mattresses of the year. In addition to our in-house test data, we have also drawn on a wider testing panel and trawled through hundreds of verified consumer reviews. 

While all of our beds in our general best mattresses guide are available in king size, there’s lots to think about before buying a new king size mattress: your sleep position and body type, any physical ailments or injuries that need to be supported, and the sleep and health needs of anyone you share a bed with. Different materials have different benefits and drawbacks, so our roundup of the best king size mattresses include hybrid, organic and memory foam options. 

Plus, as the price of a king size bed is more important than ever right now, we've included the best budget-friendly options, too. Prices start from less than $500, which is an excellent price for such a large mattress. Presidents’ day is also fast approaching, so our best king size mattress picks are set to be even cheaper thanks to the upcoming Presidents’ Day mattress sales in February. Here are our recommendations for this year’s top-rated king size mattresses, as tested by our team of experts…

Best king size mattress: Quick list

The best king size mattresses, tested by experts

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Our team has tested a wide range of king size mattresses to find this year's top rated models. Not all of the mattresses we have reviewed have made it into this guide, so the following picks are our top recommendations based on in-house testing and thorough consumer research.

Best king size mattress overall

Best king size mattress image shows the Saatva Classic on a beige bedframe overlooking the ocean

(Image credit: Saatva)
America's top rated king size mattress

Specifications

Type: Innerspring hybrid
Firmness (1-10): 3, 5-7, or 8
Height: 11.5 or 14.5"
Trial: 365 nights
Shipping: Free in-home delivery; $99 returns fee
Warranty: Lifetime
Price bracket: Premium

Reasons to buy

+
Custom firmness and height
+
Cool, supportive, and responsive
+
Industry-leading perks

Reasons to avoid

-
Costs $99 to send back
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Some motion transfer

The Saatva Classic tops our list as the best king size mattress for most people and is also our highest-rated bed overall. This innerspring hybrid is available in three firmness levels – plush soft (3), luxury firm (5-7). or firm (8) – and two height profiles (11.5 or 14.5 inches) so it can be tailored to suit nearly any type of sleeper. (The WinkBed at #4 on our list comes in four firmness levels but only a 13.5-inch height.) Inside the Saatva Classic, you'll find a dual layer of coils and a foam encasement along the perimeter for stable edges. The middle third features a thin memory foam layer coupled with a higher concentration of 14.5-gauge recycled steel coils for targeted lumbar support. Everything is capped by a luxe 3-inch Euro pillow top. 

What it's like to sleep on: review notes

This design yields a cool, responsive sleep surface that keeps everything well-aligned. Although it lacks the sink-in comfort of an all-foam bed, we felt the queen luxury firm Saatva Classic mattress we tested delivered outstanding pressure relief. 

Price, trial and warranty

Frequent Saatva mattress sales mean you'll hardly ever pay the MSRP, but even after discounts this mattress often remains in the premium price bracket. However, keep in mind that each Saatva Classic mattress is handmade to order in the USA and comes with a one-year trial, a lifetime warranty, and free in-room delivery with optional mattress removal. With this bonafide all-rounder, you certainly get what you pay for. 

King size Saatva Classic: $2,495$2,121 at Saatva

King size Saatva Classic: from $2,495 $2,121 at Saatva
There’s currently a 15% off Saatva mattress sale on orders of $1000 and more, taking the price of a Saatva Classic king down to $2,121. That means a saving of $374, which is a pretty decent deal. However, we have seen prices drop by as much as 40% . If you can wait, it might be worth holding out to see what President's Day mattress deals pop up in February. 

Best king size mattress for couples

Best king size mattress image shows the DreamCloud Luxury Hybrid mattress in a light bedroom, with colorful bedding

(Image credit: DreamCloud)
A luxury king size hybrid that could save you from a sleep divorce

Specifications

Type: Hybrid
Firmness (1-10): 8
Height: 14"
Trial: 365 nights
Shipping: Free shipping and returns
Warranty: Lifetime
Price bracket: Mid-range

Reasons to buy

+
Luxe feel at a mid-range price
+
Best for back and front sleepers
+
Low motion transfer

Reasons to avoid

-
Too firm for some side sleepers
-
Edge support could be better

If the premium Saatva Classic is beyond your budget, the DreamCloud is a sound alternative. The lofty, 14-inch DreamCloud is a seven-layer hybrid mattress consisting of individually-wrapped innersprings and multiple types of foam. 

What it's like to sleep on: review notes

Our hands-on experience with a twin DreamCloud mattress revealed impeccable pressure relief and robust support, particularly for those dealing with joint or back pain. It has a firmer feel that's ideal for back and stomach sleeping; side sleepers and those who are lighter will prefer something softer like the all-foam Nectar at #3 on this list.

The DreamCloud also excels at isolating motion so you and your partner are unlikely to disturb each other with your movements at night. However, we found the edges to be lacking, so be aware if you tend to roll toward the sides while sleeping or sit on the edge to get in and out of bed. (In that case, we recommend the Avocado Green at #5 on this list for its tremendous edge support.)

Price, trial and warranty

This luxury hybrid costs less than $1,000 in a king during DreamCloud mattress sales. It also comes with a one-year trial and a lifetime warranty – but minus the return fees that Saatva charges. White glove delivery is an extra $199; otherwise, the DreamCloud ships free in a box for you to unravel and set up