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King Memory Foam Mattresses

All mattresses

33 king memory foam mattresses from Novilla, Nectar, Sweetnight and more. Most cost $270 to $3,799, and half cost less than $467.

King mattresses whose title says memory foam: foam throughout, no coils.

We do not pick by hand: a mattress is here because its listed specs pass the checks.

Top brands: Novilla (9)

Tempur-Pedic

King, Memory Foam, Medium, 11 to 12 in

+King size fits larger beds and two sleepers
+All memory foam construction
+Medium firmness suits many sleep preferences
$2,799.00-7%Was: $2,999.00
as of 11/04/2026 05:39 PST - Details
Novilla

King, Memory Foam, 13 in and up

+CertiPUR-certified memory foam
+Ships boxed for easy home delivery
+Cooling design with gel memory foam
−Heavier than thinner king mattresses
$365.48-21%List: $459.99
as of 11/04/2026 00:28 PST - Details
Novilla

King, Memory Foam, Medium Firm, 13 in and up

+King size fits two sleepers comfortably
+CertiPUR-US certified foam
+AiryFlow cooling system for cooler sleep
$467.48-15%List: $549.99
as of 11/04/2026 00:28 PST - Details
Serta

King, Memory Foam, Firm, 11 to 12 in

+CertiPUR-US certified foam for a material standard
+Ships boxed for easier delivery to a home
+King size for couples or extra sleeping room
$506.88-5%Was: $535.49
as of 11/04/2026 02:37 PST - Details
Mlily

King, Memory Foam, Medium Firm, 11 to 12 in

+Full 12 inch thickness for deep support
+CertiPUR-US certified memory foam
+Copper gel infused foam
−Medium firm feel may not suit those wanting softer support
$489.99
as of 11/03/2026 22:48 PST - Details
Novilla

King, Memory Foam, 11 to 12 in

+CertiPUR-certified memory foam
+Ships boxed for easy home delivery
+Cooling design with gel memory foam
−Heavier than thinner king mattresses
$369.99
as of 11/04/2026 00:28 PST - Details
Purple

King, Memory Foam, Soft

+King size for a roomy two-person sleep surface
+Split King option for separate adjustable bed setups
+Memory foam construction with GelFlex Grid
−Soft firmness may feel too yielding for some sleepers
$4,598.00
as of 11/04/2026 00:47 PST - Details
Generic

King, Memory Foam, Medium, 8 to 10 in

+King size fits a large bed frame
+CertiPUR-US certified memory foam
+Cooling gel memory foam construction
−Thicker than an 8-inch mattress, which may need deeper sheets
No price recorded yet.
Nectar

King, Memory Foam, Medium Firm, 13 in and up

+King size for larger bedrooms and couples
+Split King option for adjustable bases
+Contouring memory foam construction
−Heavy king size is difficult to move alone
$3,036.00
as of 11/04/2026 00:21 PST - Details
Novilla

King, Memory Foam, 13 in and up

+CertiPUR-certified memory foam
+Ships boxed for easy home delivery
+Cooling design with gel memory foam
−Heavier than thinner king mattresses
$449.99
as of 11/04/2026 00:28 PST - Details
Casper

King, Memory Foam, Medium Firm, 11 to 12 in

+CertiPUR-US certified foam
+King size gives room for two sleepers
+Medium firm feel suits back and stomach sleepers
−Memory foam can trap heat compared with hybrid designs
$1,695.00
as of 11/03/2026 22:20 PST - Details
Tempur-Pedic

King, Memory Foam, Firm, 11 to 12 in

+King size fits larger beds and two sleepers
+Cooling cover for hot sleepers
+All memory foam construction
−Firm feel may not suit side sleepers seeking softness
$3,799.99
as of 11/04/2026 05:39 PST - Details
Bhxwry

King, Memory Foam, 11 to 12 in

+King size fits larger bedrooms and couples
+Memory foam contours to the body
+Green tea gel infused foam
−Memory foam can trap heat compared with springs
$191.00
as of 11/03/2026 23:45 PST - Details
Generic

King, Memory Foam, 11 to 12 in

+King size fits a large bed frame
+CertiPUR-US certified memory foam
+Open-cell foam designed for breathability
−Thick 11 to 12 inch profile is taller than standard mattresses
No price recorded yet.
Generic

King, Memory Foam, Medium Firm, 8 to 10 in

+King size for wide sleeping space
+Charcoal infused memory foam
+Cooling feature for a cooler sleep surface
−Under 10 inches thick, thinner than some memory foam options
No price recorded yet.
Generic

King, Memory Foam, Medium Firm, 8 to 10 in

+King size fits two sleepers or a larger frame
+Memory foam conforms to the body
+Charcoal infusion with cooling feature
−Memory foam can trap heat unless cooling feature works
No price recorded yet.
Generic

King, Memory Foam, Firm, 8 to 10 in

+King size fits two sleepers or a larger frame
+Memory foam conforms to the body
+CertiPUR-US certified foam
−Firm feel may feel hard for side sleepers
No price recorded yet.
Generic

King, Memory Foam, Soft, 8 to 10 in

+CertiPUR-US certified foam for a certified material standard
+Soft feel for sleepers who prefer cushioning
+Boxed for delivery to a doorway
−Soft feel may not suit sleepers who want firm support
No price recorded yet.
Generic

King, Memory Foam, 11 to 12 in

+Cooling green tea gel memory foam
+CertiPUR-US certified memory foam
+Fiberglass free cover
−Extra firm feel may be too hard for many sleepers
No price recorded yet.
Generic

King, Memory Foam, 8 to 10 in

+Cooling gel memory foam listed for a cooler sleep
+Carbon cooling feature listed in the product name
+10 inch thickness is a common comfortable profile
−Narrow king dimensions differ from a standard king mattress
No price recorded yet.
Sweetnight

King, Memory Foam, Medium, 11 to 12 in

+Cooling feature listed for warmer sleepers
+CertiPUR-US certified foam
+5-zone ergonomic support design
$449.99
as of 11/04/2026 05:36 PST - Details
Novilla

King, Memory Foam

+CertiPUR-certified memory foam
+Cooling design for warmer sleepers
+King size fits larger beds
$309.99
as of 11/04/2026 00:28 PST - Details
Opoiar

King, Memory Foam, 8 to 10 in

+King size fits two sleepers or a larger bed frame
+CertiPUR certified foam for lower chemical emissions
+Green tea gel memory foam with cooling feature
No price recorded yet.
Generic

King, Memory Foam, 13 in and up

+King size fits couples or larger sleepers
+Memory foam contours to the body
+Certified by CertiPUR-US for foam content
No price recorded yet.
Signature Design by Ashley

King, Memory Foam, Medium Firm, 11 to 12 in

−Cooling not listed: 23 of the 33 here list one
$449.99
as of 11/04/2026 02:41 PST - Details

Compare specs

mattressSizeTypeFirmnessThicknessSpec scorePrice
KingMemory FoamMedium11 to 12 inn/a$2,799.00
as of 11/04/2026 05:39 PST - Details
KingMemory Foam13 in and upn/a$365.48
as of 11/04/2026 00:28 PST - Details
KingMemory FoamMedium Firm13 in and upn/a$467.48
as of 11/04/2026 00:28 PST - Details
KingMemory FoamFirm11 to 12 inn/a$506.88
as of 11/04/2026 02:37 PST - Details
KingMemory FoamMedium Firm11 to 12 inn/a$489.99
as of 11/03/2026 22:48 PST - Details
KingMemory Foam11 to 12 inn/a$369.99
as of 11/04/2026 00:28 PST - Details
KingMemory FoamSoftn/a$4,598.00
as of 11/04/2026 00:47 PST - Details
KingMemory FoamMedium8 to 10 inn/aNo current price
KingMemory FoamMedium Firm13 in and upn/a$3,036.00
as of 11/04/2026 00:21 PST - Details
KingMemory Foam13 in and upn/a$449.99
as of 11/04/2026 00:28 PST - Details

Before you buy

Spec scores, pros and cons, and prices are explained in the How it works section of the About page.