Mattress size guide
Shop by mattress size
Start with the dimensions that fit your room and your routine. Once you pick a size, you can still narrow results by comfort, brand, price, and everything else that matters before checkout.
Where the sizes differ
Room check
Put the bed in your room, to scale.
Type your room's width and length. The mattress goes against the head wall, and the drawing measures the floor left on each side and past the foot.
In a 12 ft x 12 ft room, a Queen leaves 42 in. on each side and 64 in. past the foot.
- Grid squares are 1 ft. Mattresses and room share one scale.
- Mattress only. A bed frame, headboard or footboard adds to it.
- Sizes as Sealy's size guide prints them. A finished mattress can run up to half an inch short of these; Serta lists its Queen at 60 x 79.5 in. Sources: Sealy, Serta
- For reference, Purple's size guide says to leave at least two feet around the mattress. Source
Mattresses priced in Queen
The first 8 in the Queen collection, in the order it lists them. Each price is for that size today.
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Jamison
Jamison Vista Tight-Top Mattress
$299 Queen
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Jamison
Jamison Wellington 8" Pillowtop Mattress
$399 Queen
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Nectar
Nectar Classic Memory Foam Mattress
$699 Queen
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Nectar
Nectar Premier Mattress
$999 Queen
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Sherwood by Sealy
Sherwood Moonlite Pillowtop Mattress
Sold out in Queen
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Purple
Purple® Mattress
$1,599 Queen
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Jamison
Jamison Hudson Bay Cooling Pillowtop Mattress
Sold out in Queen
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Sealy
Sealy Posturepedic®13" Medium Mattress
$1,199 Queen
Browse faster
Pick your size first, then narrow everything else.
Each card opens the mattress collection with that size already selected, so you keep native filters, native sorting, and a cleaner path to the right bed.
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Twin 38 x 75 in.Small spaces
The smallest of the six.
A compact fit when the room is doing a lot of work and you still want a real mattress, not a compromise.
Who it suits Kids, bunks, tighter guest rooms
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Twin XL 38 x 80 in.Extra legroom
5 in. longer than a Twin, same width.
Ideal when you need the narrow footprint of a Twin but extra length for a taller sleeper.
Who it suits Teens, college, taller solo sleepers
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Full 54 x 75 in.Room saver
16 in. wider than a Twin, same length.
The middle ground for solo sleepers who want more room than a Twin without moving all the way to Queen.
Who it suits Solo adults, teens, compact primary rooms
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Queen 60 x 80 in.Most popular
6 in. wider and 5 in. longer than a Full.
The go-to fit for most households because it works in a wide range of bedrooms and sleep styles.
Who it suits Couples, guest suites, primary bedrooms
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King 76 x 80 in.Maximum width
16 in. wider than a Queen, same length.
Choose this when personal space is the priority and the bedroom can handle the wider footprint.
Who it suits Couples, co-sleepers, larger rooms
A split King is two Twin XL mattresses side by side, 76 x 80 in. together. There is no split King collection, so shop two Twin XL. Source
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Cal King 72 x 84 in.More length
4 in. narrower and 4 in. longer than a King.
A longer shape for taller sleepers who want more reach at the foot of the bed.
Who it suits Tall sleepers, larger primary suites
Still comparing sizes? Visit our Kentucky locations to try them in person, then come back online to finish narrowing by brand and comfort.
Shopping online but planning to visit later? Every filtered result still supports the same brand and comfort filters you use across the site, so you can start broad, save time, and keep your shortlist tight.
