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King Memory Foam Mattresses

All mattresses

16 king memory foam mattresses from Novilla, Nectar, Sweetnight and more. Most cost $260 to $2,799, and half cost less than $450.

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 (4)

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
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
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, 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.
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
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
Sealy

King, Memory Foam, 11 to 12 in

−Cooling not listed: 23 of the 33 here list one
$749.00
as of 11/04/2026 02:36 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 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 FoamMedium Firm11 to 12 inn/a$1,695.00
as of 11/03/2026 22:20 PST - Details
KingMemory FoamFirm11 to 12 inn/a$3,799.99
as of 11/04/2026 05:39 PST - Details
KingMemory Foam11 to 12 inn/a$191.00
as of 11/03/2026 23:45 PST - Details
KingMemory Foam11 to 12 inn/aNo current price
KingMemory Foam11 to 12 inn/aNo current price
KingMemory FoamMedium11 to 12 inn/a$449.99
as of 11/04/2026 05:36 PST - Details

Before you buy

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