Best King Size Mattresses (April 2024) - Rated by CherryPicks' Experts

King Size Mattress: Things You Should Know Before You Buy!

Hold your horses. Before we delve into the best of the best, here are some key things you should know. The wrong mattress can have some significant side effects on your health, so take note!

How Big is A King Size Mattress?

A king size mattress is 76 inches wide by 80 inches long, which is just a couple of inches shorter than putting 2 twin XL mattresses together.

To give you a little perspective:

• Full: 54 by 75 inches.
• Queen: 60 by 80 inches.
• King: 76 by 80 inches.
• Cal King: 72 by 84 inches (many people mistakenly think it’s as wide as a king mattress, but it isn’t. It’s taller but thinner).

To fill a king-size mattress, you and your partner would need to be something like 2 meters tall (6 foot 8 inches) and be as wide laying down as a single bed. That’s pretty wide.

Know more about different mattress sizes, click here.

Mattress Size & Dimensions

• Crib Mattress: 22"x 52"(in Inch) = 56 x 132cm (in Centimeters)
• Small Single: 30"x 74"(in Inch) = 76 x 188cm (in Centimeters)
• Twin Mattress: 38" x 75" (in Inch) = 96.5 X 190.5cm (in Centimeters)
• Twin XL Mattress: 38" x 80" (in Inch) = 96.5 X 203cm (in Centimeters)
• Full Mattress: 53" x 75" (in Inch) = 134.5 X 190.5cm (in Centimeters)
• Full XL Mattress: 54"x 80"(in Inch) = 137 x 203cm (in Centimeters)
• Queen Mattress: 60" x 80" (in Inch) = 152.5 X 203cm (in Centimeters)
• Olympic Queen Mattress: 66"x 80"(in Inch) = 168 x 203cm (in Centimeters)
• King Mattress: 76" x 80" (in Inch) = 193 X 203cm (in Centimeters)
• California King Mattress: 72" x 84" (in Inch) = 183 X 213cm (in Centimeters)

What Mattress Types do King Size Mattresses Come in?

This is the important part. Different mattress types are better for different sleepers and sleeping positions! Don’t worry if this is going over your head a little. We’ve made it easy for you by letting you know what each mattress is suitable for in our mini-reviews below.

King mattresses can be:

Innerspring – at a basic level, an innerspring mattress is full of metal coils surrounded by padding and sealed in the mattress case. Of course, the industry has developed a lot over the years and you’ll now find all sorts of coil systems, metal types and spring layers used by mattress makers to create a better feel. These mattresses tend to offer a good bounce but can be noisy, so look for noise insulating foam layers too.

Foam (Memory Foam) – foam layers, usually a mid-layer and top layer at least, remember your body shape and let you sink into your mattress. This type tends to offer the best support for side sleepers, although there are firm foams that can help back and stomach sleepers too.

Latex – a natural product made from rubber that’s entirely biodegradable! It’s great as a more resistant foamy feel and often combined with other natural materials to create eco-friendly mattresses, if you’re into that kind of thing.

Hybrid – this is the most common type of king mattress or any large mattress size. To keep the large surface springy and to prevent natural sagging at the center, a mix of foam, latex, and innerspring layers are used to create a sturdier mattress.

How Can I Clean This Gigantic Mattress Size?

Because king size mattresses are so huge, you want to keep the cleaning to the minimum. Double up on mattress sheets that you can wash if something is spilled on it, and then all you’ll need to do is spot clean if the actual mattress beneath gets dirty. A sponge, hot water and washing powder are all you need to scrub out stains.

For odors and all-over cleaning, you can use baking soda. Sprinkle it over the mattress to let it absorb odors then get ready with the vacuum cleaner. It might be easier on your back to lift the mattress vertically against a wall for this.

How Much Should I Expect to Pay for a King Size Mattress?

Price points vary widely but you should always expect to pay more for a king mattress than a smaller size!

The cheapest king size mattresses on our list are around $800.

The most expensive king size mattresses are around $3000.

The average is about $1900.

All these price averages are at the time of writing this article – don’t expect them to stay the same! As eco-materials become more popular and new mattress types are developed, prices could go either up or down.

Delivery AND Returns Are Important to Check!

• 1. Novilla King Size Mattress, 12 Inch Gel Memory Foam King...
• 2. Signature Design by Ashley Chime 12 Inch Medium Firm Memory...
• 3. Vibe Gel Memory Foam Mattress, 12-Inch CertiPUR-US Certified Bed-in-a-Box, King,...
• 4. Olee Sleep 10 inch Aquarius Memory Foam Mattress - King,...
• 5. ZINUS 12 Inch Green Tea Cooling Gel Memory Foam Mattress...
• 6. PrimaSleep Wave Gel Infused Memory Foam Mattress, 10'' H, King,...
• 7. LINENSPA 8 Inch Memory Foam and Innerspring Hybrid Mattress –...
• 8. Olee Sleep 13 inch Galaxy Hybrid Gel Infused Memory Foam...
• 9. Sweetnight King Size Mattress, 10 inch Gel Memory Foam Mattress...
• 10. Flash Furniture Capri Comfortable Sleep 12 Inch Hybrid Pocket Spring...

Top 10 King Size Mattresses Brands on Amazon

Here is the list of top-rated brands that were evaluated by CherryPicks.

• Novilla
• Signature Design by Ashley
• Vibe
• Olee Sleep
• Zinus
• PrimaSleep
• Linenspa
• Sweetnight
• Flash Furniture
• COOL GEL

Related King Size Mattresses Guides

For more personalized King Size Mattresses guides, Check those pages,

Finally, the last thing you should know about buying the best king size mattress online is… sometimes you can’t tell if it’s the best or not until you’ve spent a few nights sleeping on it. That’s why checking the details of the trial policy is especially important. Read our reviews below to find out whether returns are accepted and how delivery is dealt with by each brand.

Top 10 King Size Mattresses Sellers: CPR Seller Rank List

CPR sellers rank is based on CherryPicks-AI bestselling ranking system that helps us analyze each seller's sales trends. The List of top seller ranks is our in-house data, essential for our product ranking to help you make the right shopping choice.