A king size mattress is unofficially the gold standard of mattress sizes, providing ample space for couples and a balanced, aesthetically pleasing look to a bedroom, thanks to its near-perfect square shape. By definition, king size mattresses have dimensions 76 inches wide by 80 inches long. They’re spacious, kid- and pet-friendly, and widely available from a variety of mattress manufacturers.
King size mattresses have certain advantages over queen and full size beds, namely the extra space. However, the average price-point for king size mattresses is higher than that of smaller sizes available, but the emergence of online-only mattress brands has made them available at lower prices.
If you’ve already made the personal decision to invest in a king size mattress, the next question is obvious: what are the best king size mattresses, and which one should you buy? In this review, we’re sharing our top 10 picks for king size mattresses. You’ll also find a shoppers’ guide for purchasing a king size mattress, including what to look for, the size’s pros and cons, who they’re best for, and the different types available online.
MATTRESS NERD’S TOP PICKS
The Puffy is constructed with gel memory foam and temperature-resistant polyfoam layers, and the 12” Puffy Lux features three pressure-relieving comfort layers and a medium-firm feel that’s great for all sleepers. Both Puffy mattresses are known for producing minimal noise and having excellent motion isolation.
Minimal motion transfer for couples
Sleeping with a partner has it’s advantages to be sure, from snuggles and pillow talk to other unmentionable things that occur in bed. However, once the lights are out, sleep can be hard to achieve with a partner who snores or moves excessively throughout the night. If you’re a light sleeper with a partner, we recommend the Puffy or the Puffy Lux. Minimal motion transfer is a major benefit of this mattress, in addition to its competitive pricing and comfortable feel. All Puffy mattresses are sold with a 101-night sleep trial, free shipping in the contiguous U.S., and a lifetime, non-prorated warranty.
Made from high-density memory foam, the Nectar is designed for long-term support and conformity. It’s a mid-level firm mattress that has great motion isolation, comfort, and much more at a more affordable price than similar quality beds in the market.
Comfort, durability, and more at an affordable price
Young newlyweds who want to upgrade to a king size mattress can often experience sticker shock at the price tag. The Nectar offers a budget-friendly option for singles, recent grads, and couples who want the experience of a king bed without draining their savings accounts. Not only is the baseline mattress price attractive, but Nectar goes beyond expectations, using quality memory foam materials that are both conforming and temperature-regulating. Every Nectar mattress comes with a generous 365-night sleep trial, a lifetime warranty, and free shipping in the contiguous U.S.
The Tuft & Needle mattress is simple but mighty, featuring just two layers. The top layer is three inches of adaptive foam, which feels like a marriage between memory foam and latex. The bottom layer is seven inches of a high-density support foam.
All-foam yet sleeps cool
If you want an all-foam mattress but tend to sleep hot with or without a partner, this mattress’ open cell foam will keep you cool and comfortable throughout the night, featuring graphite and gel beads for temperature regulation. The Tuft & Needle is also our pick because of the price. On Amazon, a King currently costs just $750 and is Amazon prime-eligible. It’s also great for sleepers of any size; the more pressure you put on the bed, the more it reacts to support you. The medium-firm feel is also suitable for sleepers of all positions, most notably combination sleepers. For its versatility, price, and high online ratings, this is our Editor’s Pick king size mattress. Every T&N mattress comes with free shipping in the contiguous U.S., a 100-night sleep trial, and a non-prorated 10-year warranty.
One of Simmons Beautyrest’s innerspring collections, the Beautyrest Black line includes innerspring mattresses that are available in multiple firmness ratings. The Tatiana, Sonya, Natasha, Calista, Desiree, and Katarina Pillow Top range in price point and features, but all include pocketed coils and layers of foam.
Available in soft, medium, and firm
Luxury king with something for everyone
Beautyrest Black is the highest luxury line from Simmons, so if you’re set on a luxury king sized model, we recommend looking into this line. Black mattresses come in a variety of firmness options and price points. Generally, the thicker the mattress, the more expensive it is. Sought after luxury mattress features, like a pillow top for extra cushioning, are available in some models. All Black line mattresses feature a cooling cover layer, top comfort layers in various materials and thicknesses, bottom comfort layers for pressure point relief, and support layers made of an advanced pocketed coil system that cradles the spine. The trial period depends on the retailer, as does the shipping, but all Simmons Beautyrest Black beds come with a 10-year warranty.
The Leesa Hybrid, formerly known as the Leesa Sapira, has comfort layers of polyfoam, memory foam, and transitional polyfoam. The support core features pocketed coils, and it’s reinforced with high-density polyfoam.
Firm while accommodating a variety of sleeping positions
If you’re looking for a firm king size mattress, the Leesa Sapira Hybrid is a great place to start. It suits a variety of sleepers, including back, stomach, and combination sleepers, and provides temperature regulation for hot sleepers. While it costs more than other Leesa models, it provides more support and can be supportive enough for individuals weighing more than 250 pounds. While supportive, the feel remains comfortable, but it certainly isn’t what we’d describe as plush. The Leesa Sapira Hybrid king size comes with a 100-night sleep trial, free shipping to all 50 states, and a 10-year, non-prorated warranty.
The Casper Essential is a mixed-foam king size mattress constructed with a top layer of polyfoam and a bottom layer of memory foam in the comfort system, and the support core is made with high-density polyfoam.
Affordable comfort in a streamlined design
If you’re looking for an affordable firmer king size mattress, we recommend the Casper Essential. It provides consistent body conforming and pain and pressure relief for all sleeper types, but it’s particularly great for sleepers at average and heavy weights. It’s marketed as a ‘firm’ mattress, but it’s important to note that the more affordable price point also means somewhat lower quality foams, meaning that they’ll degrade and soften up quicker than other models. So, ‘firm’ might become ‘medium’ in a year or two’s time. The Casper Essential comes with a 100-night sleep trial, free shipping in the contiguous U.S., and a 10-year, non-prorated warranty.
Tempur-Pedic’s ProAdapt comes in an all-foam version, with HD polyfoam, memory foam, and convoluted base foam, and a hybrid version, which features pocketed coils with a memory foam encasement. Both are 12” thick, and the all-foam version comes in three firmness options, whereas the hybrid comes in just one firmness option: medium.
Available in soft, medium, and medium firm
Choose your firmness setting and mattress style
The ProAdapt offers the most versatility of Tempur-Pedic models, including three firmness settings and all-foam and hybrid options. This mattress also features a dual-layer SmartClimate cover for added coolness. While some mattress brands and models cater to specific sleeper weights, positions, and firmness preferences, the ProAdapt has an option for every sleeper. If you have a relatively large shopping budget, tend to sleep hot, and your partner wakes you easily with movement, we recommend the ProAdapt. Like all Tempur-Pedic beds, this mattress comes with a 90-day sleep trial, free white glove shipping in the contiguous U.S., and a 10-year non-prorated warranty.
The Brooklyn Aurora is a hybrid with a profile of 13.5” that comes in soft, medium, and firm options. Its top layer is made with phase-change material for conformity and temperature regulation, and it also features polyfoam and memory foam comfort layers, a pocketed coil support core, and a high-density polyfoam base.
Offered at three firmness levels
The thick, multi-layer support system minimizes motion transfer
All of Brooklyn’s products have earned recognition for their ability to suit a variety of sleepers with different weights and preferred sleeping positions. The Aurora is our favorite hybrid king size, however, because it simply checks so many boxes. It’s thick, durable, motion isolating, responsive, conforming, and temperature neutral, among other things. The thick, multi-layer support system absorbs and reduces motion transfer to a significant extent. The Brooklyn Aurora comes with a 120-night sleep trial, free shipping, and a 10-year, non-prorated warranty.
The Nest Alexander Signature Hybrid includes a comfort layer with four components, a support core of zoned pocketed coils, and a cover made of rayon and polyester. It’s available in three firmness options: Plush, Medium, and Luxury Firm.
Four top comfort layers make it exceptionally soft
The Nest Alexander Signature’s four top comfort components make it exceptionally soft, especially for side sleepers and back sleepers. You’ll find memory foam, polyfoam, cooling, copper-infused gel polyfoam, and transitional polyfoam — and that’s just in the comfort layer. The Nest Alexander also sleeps cool regardless of your size, meaning that, even if you and your partner vary dramatically in weight or height, you’ll both find a cool night’s sleep in this bed. It’s also a nice option for sleepers who want a soft feel but find themselves sinking too much in other models. The Alexander is thicker than average, which combats that problem. The Nest Alexander Signature Hybrid comes with a 100-night sleep trial, free shipping, and a lifetime warranty. White glove and international delivery are also available
Finding a new mattress can be a confusing, frustrating process, even if you’ve narrowed down the size bed you want to purchase. Choosing the best king mattress requires the same considerations when choosing a mattress in general, including taking into consideration material composition, price, and much more. Here’s an overview of what to look for in a king mattress, with both general mattress purchasing considerations and factors that apply specifically to a king size:
A bigger mattress can solve issues of disturbances like snoring, turning, tossing, and cover-stealing from a partner. If you’ve decided that a king bed is what you need, you’ll need to decide on the exact type of king you’re after. Here are the details and dimensions of the most common king size mattresses.
One size larger than a queen, a traditionally sized king provides sleepers with an additional 16 inches of width. A standard king measures 76 by 80 inches, which is the same as two twin XL mattresses pushed together.
An eastern king is simply a synonym for a standard king, and it also measures 76 inches wide by 80 inches long.
The only difference between a California king and a standard/eastern king is in the width and length. California kings measure 84 inches long by 72 inches wide, so they’re best for especially tall individuals and those who enjoy extra space.
A split king, otherwise known as a dual king mattress, comes in two pieces rather than one. Each piece is roughly the same size as a twin mattress. Creating a king bed out of two separate mattresses allows each partner to have their own space, which is often customized for firmness or adjustable, while still sharing closeness with their partner.
King size mattresses not only offer space but things like health benefits, and solving for insomnia is just one of them. Here are some of the benefits of king mattresses:
It’s hard to imagine that a larger, more spacious bed could have downsides, but they do exist. Here are some of the drawbacks of king mattresses:
Individuals and couples considering a king are most often battling between a king vs. a king, so that’s what we’ll consider here. Which one is right for you and your needs? Understanding the core differences between them will help you make an informed choice.
A queen measures 80 inches long by 60 inches wide, whereas a king measures 80 inches long by 76 inches wide. A queen requires a room, at a minimum, that measures 10 by 12 feet, and a king requires a room that measures at least 10 by 14 feet, not accounting for other bedroom furniture. In general, queens work well for single sleepers and for couples who don’t need much sleeping space. Kings are typically preferred for couples who want the maximum amount of personal sleeping space.
If price is a concern, keep in mind that while a king does generally cost more than a queen, affordable options are available. Both a king and a queen are widely available in a variety of styles at many price points, so it isn’t a decisive factor you should worry about.
As mentioned, room size becomes a major factor when couples realize that a king is more than a foot wider. Leaving two feet of space on three sides of your room is recommended by interior designers, but that’s the minimum. If you want to include a wardrobe, nightstands, and other pieces, you’ll need more room.
At the end of the day, the choice between a king or a queen mattress is a matter of personal preference. If you sleep alone, a queen size is a great choice and will save you room space. If you’ve been sleeping with a partner for several years in a queen and find that your sleep is compromised for whatever reason, upgrading to a king might pave a path to more restful sleep and better overall wellness for the two of you.
If you’re on the hunt for a king size mattress, you’re already well on your way to better comforter and better sleep. Most owners of king size mattresses would tell you that the extra expense is worth it. With extra space, you’re less likely to feel your partner’s motions throughout the night, and a bedroom space, especially a master, simply looks better in a larger bedroom. Investing in a king mattress is an important step toward guaranteeing restful sleep, so we hope you’ll use this guide to the best king mattresses to get you there.
If you still need guidance in your mattress buying journey, check out our ultimate mattress buying guide here.
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