King Bed Specs

King Bed Specs provide essential details to help you find the perfect fit for your bedroom and sleep preferences. Understanding the dimensions and specifications of a king bed ensures you make an informed choice, whether you're upgrading your sleep space or furnishing a new home. Explore King Bed Specs to discover the key measurements and information you need to create a comfortable, spacious retreat.

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Sleepy's Basic Adjustable Base

Starting at

$300⁹⁹

FREE with select mattress purchase³.

Sleepy's Basic Memory Foam Firm Mattress

3017

Starting at

$300⁷⁷

$1000⁹⁹

$700 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain;Bed Partner;Temperature;Toss and Turn
Support
Temperature

Sleepy's Signature Platform Frame

Starting at

$190⁹⁹

Sleepy's Basic Innerspring Firm Mattress

8550

Starting at

$220⁹⁹

Firm Comfort, best for

Back;Stomach Sleepers
Temperature;Pain;Bed Partner;Allergies;Toss and Turn

Beautyrest BR800 13.5" Plush Pillow Top Mattress

2709

Starting at

$1500⁹⁹

Plush Comfort, best for

Side Sleepers
Toss and Turn;Pain;Bed Partner;Temperature
Pain
Bed Partner

FREE ADJUSTABLE BASE ³ with code ELEVATE

Tempur-Pedic TEMPUR-Ergo Smart Adjustable Base

888

Starting at

$2899⁰⁰

Calm app 3-month free trial with mattress purchase & registration

Beautyrest Silver BRS900 11.75" Extra Firm Mattress

3202

Starting at

$1700⁹⁹

Extra Firm Comfort, best for

Back;Stomach Sleepers
Temperature;Pain;Allergies;Bed Partner;Toss and Turn;Toss and Turn
Pain
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest BR800 11.25" Firm Mattress

2183

Starting at

$1300⁹⁹

Firm Comfort, best for

Back;Stomach Sleepers
Toss and Turn;Pain;Bed Partner;Temperature
Pain
Bed Partner

FREE ADJUSTABLE BASE ³ with code ELEVATE

Sealy Essentials Sudley 8.5" Firm Mattress

989

Starting at

$500⁰⁰

$1000⁹⁹

$500 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain;Temperature;Bed Partner;Toss and Turn

Tulo Bamboo 10" Medium Green Tea Memory Foam Mattress

5459

Starting at

$890⁹⁹

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain;Bed Partner;Temperature;Allergies;Toss and Turn
Pain
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Tulo Bamboo 12" Medium Plush Green Tea Memory Foam Mattress

5459

Starting at

$1020⁹⁹

Medium Comfort, best for

Back;Side;Stomach Sleepers
Bed Partner;Pain;Temperature;Toss and Turn
Pain
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest BR800 13.5" Medium Pillow Top Mattress

1817

Starting at

$1500⁹⁹

Medium Comfort, best for

Back;Side;Stomach Sleepers
Toss and Turn;Pain;Bed Partner;Temperature
Pain
Bed Partner

FREE ADJUSTABLE BASE ³ with code ELEVATE

Tulo Bamboo 8" Medium Green Tea Memory Foam Mattress

5459

Starting at

$810⁹⁹

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain;Bed Partner;Temperature;Toss and Turn
Pain
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Silver BRS900 11.75" Medium Firm Mattress

1698

Starting at

$1000⁹⁹

Medium Comfort, best for

Back;Side;Stomach Sleepers
Allergies;Bed Partner;Temperature;Pain;Toss and Turn;Toss and Turn
Pain
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Purple Original Mattress

30139

Starting at

$1999⁰⁰

Medium Comfort, best for

Back;Side;Stomach Sleepers
Temperature;Pain;Bed Partner;Toss and Turn;Toss and Turn
Temperature
Allergies

Sleepy's By Sealy Slumber Cushion Firm Mattress

271

Starting at

$560⁹⁹

$2000⁹⁹

$1440 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Bed Partner;Toss and Turn;Pain;Temperature
Toss and Turn
Pain

Beautyrest BR800 12" Plush Euro Top Mattress

692

Starting at

$1400⁹⁹

Plush Comfort, best for

Side Sleepers
Toss and Turn;Pain;Bed Partner;Temperature
Pain
Bed Partner

FREE ADJUSTABLE BASE ³ with code ELEVATE

Bedgear StretchWick Mattress Protector

137

Starting at

$130⁹⁹

Temperature;Pain;Bed Partner;Allergies;Toss and Turn
Temperature

Sleepy's By Sealy Slumber Medium Mattress

158

Starting at

$2300⁹⁹

Medium Comfort, best for

Back;Side;Stomach Sleepers
Bed Partner;Toss and Turn;Pain;Temperature
Toss and Turn
Pain

FREE ADJUSTABLE BASE ³ with code ELEVATE

Sealy Essentials Winter Green 12" Medium Euro Top Mattress

603

Starting at

$1380⁹⁹

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain;Bed Partner;Temperature;Toss and Turn
Allergies
Temperature

Tulo Bamboo 6" Firm Green Tea Memory Foam Mattress

5462

Starting at

$232⁹⁹

$730⁹⁹

$498 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain;Bed Partner;Temperature;Toss and Turn
Pain
Temperature

Beautyrest Silver BRS900 12" Plush Mattress

1087

Starting at

$1700⁹⁹

Plush Comfort, best for

Side Sleepers
Temperature;Pain;Bed Partner;Toss and Turn;Toss and Turn
Pain
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Tulo Upholstered Platform Bed Frame

112

Starting at

$280⁹⁹

Tulo Traditional Metal Platform Bed with Headboard

Starting at

$250⁹⁹

Sealy Essentials Spruce 5.5" Firm Mattress

1370

Starting at

$950⁹⁹

Firm Comfort, best for

Back;Stomach Sleepers
Pain;Temperature;Bed Partner;Toss and Turn

Sleepy's Deluxe Mackenzie Headboard

167

Starting at

$489¹⁶

King Bed Specs

A king bed is the ultimate expression of spacious comfort, designed for those who value room to stretch out, share the bed with a partner, or even accommodate little ones and pets who like to snuggle in. Measuring 76 inches wide by 80 inches long (193 cm by 203 cm), a standard king-size mattress is the widest of all mainstream mattress sizes, offering each sleeper the generous equivalent of a twin XL bed. This extra width transforms the sleep experience, making it a favorite for couples who want to minimize motion transfer, enjoy their own personal space, or simply indulge in a luxurious sleep environment. The king bed’s expansive surface area is also ideal for those who love to read, watch TV, or work from bed, providing ample room to spread out with books, laptops, or breakfast trays. When considering a king bed, it’s important to ensure your bedroom is large enough to accommodate its dimensions—a minimum room size of 12 by 12 feet is generally recommended for comfortable placement and easy movement around the bed. The frame itself will add a few more inches to the footprint, depending on style and design, with typical frames ranging from 79 to 87 inches wide and 85 to 101 inches long. For those seeking a sturdy and reliable foundation, a King Bed Steel Frame offers excellent support and durability, helping to preserve the integrity of your mattress and extend its lifespan.

King beds are often selected for master bedrooms, newlyweds setting up their first home together, or families who enjoy weekend mornings piled under the covers with kids and pets. They also make thoughtful gifts for milestone occasions such as anniversaries, housewarmings, or significant birthdays, especially when comfort and restful sleep are at the top of someone’s wish list. During the winter months, the allure of a king bed grows even stronger; picture curling up under plush blankets with a cup of hot cocoa as the February chill lingers outside. The king bed’s generous size makes it easy to layer on extra bedding and pillows, creating a cozy retreat from the cold. For those who value versatility, the king bed’s dimensions are identical to two twin XL mattresses placed side by side, which can be a practical option for couples with different firmness preferences or for use with adjustable bases. When selecting a king bed, consider not only the mattress but also the bedding and accessories needed to complete your sleep sanctuary—king-size sheets, comforters, and pillows are all designed to fit these larger dimensions, ensuring a seamless and inviting look. Whether you’re upgrading for more space, outfitting a guest suite for visiting family, or simply seeking a touch of everyday luxury, a king bed offers the perfect blend of style, comfort, and functionality for a restful night’s sleep.