Puffy king mattress dimensions are enough to make you stare at four shapes with a tape measure. You’ve already done the hard part, so don’t panic. The King and Split King cover the same floor, and the Cal King gives up only 32 square inches.
Pick wrong, and you get sheets that don’t fit, a base that won’t work, or tall feet hanging off the end like a diving board. A king is a king, right? Sort of.
Before a 70 to 132 lb king lands on your porch, take the quiz. It takes about a minute, asks about the tallest sleeper’s height, your room, your base, and kids or pets, then names the Puffy king that fits.
So which of those four belongs in the bedroom?
The Standard King fits most couples. The Cal King suits tall sleepers or long rooms. The Split King belongs on an adjustable base where each side moves alone.
Key Takeaways
- A King and a Split King share the exact same 76″ x 80″ footprint, so the choice is really about how many pieces the mattress comes in.
- The Cal King trades 4 inches of width for 4 inches of length, which adds legroom for tall sleepers and suits long, narrow rooms.
- King and Cal King cost the same on every Puffy model, so price won’t make this decision for you.
- A Split King is two Twin XLs side by side and priced as two, so it always costs more than a standard King.
- Puffy mattress heights run from 10 inches on the Cloud to 16 inches on the Monarch and Legacy, and that changes your sheet pocket needs.
- Every Puffy king option is covered by the same 365-night trial, so you get a full year to see if you picked the right shape.
| King | Cal King | Split King | Split Head King | |
|---|---|---|---|---|
| Inches (W x L) | 76 x 80 | 72 x 84 | 2 x 38 x 80 | 76 x 80, one piece |
| Centimeters | 193 x 203 | 183 x 213 | 2 x 96.5 x 203 | 193 x 203 |
| Feet | about 6’4" x 6’8" | 6′ x 7′ | 6’4" x 6’8" total | 6’4" x 6’8" |
| Surface area | 6,080 sq in | 6,048 sq in | 6,080 sq in total | 6,080 sq in |
| Best for | Most couples, kids or pets joining | Tall sleepers, long and narrow rooms | Adjustable bases, each side moves separately | Raising the head on each side |
| Puffy Lux price* | $1,749 | $1,749 | $2,198 | $2,249 |
| See the Lux in a King | See the Lux in a Cal King | See the Lux in a Split King | See the Lux in a Split Head King |
*On puffy.com at the time of writing.
Puffy King Mattress Dimensions at a Glance
The Puffy King measures 76 inches wide by 80 inches long, which is the widest Puffy you can get. The other three options are close, so this table makes the differences easier to see.
| Size | Inches (W x L) | Centimeters | Feet | Surface area | Best for |
|---|---|---|---|---|---|
| King | 76 x 80 | 193 x 203 | about 6’4″ x 6’8″ | 6,080 sq in | Most couples, kids or pets joining |
| Cal King | 72 x 84 | 183 x 213 | 6′ x 7′ | 6,048 sq in | Tall sleepers, long and narrow rooms |
| Split King | 2 x 38 x 80 | 2 x 96.5 x 203 | 6’4″ x 6’8″ total | 6,080 sq in total | Adjustable bases, each side moves separately |
| Split Head King | 76 x 80, one piece | 193 x 203 | 6’4″ x 6’8″ | 6,080 sq in | Raising the head on each side |
The King is the widest, and the Cal King is the longest, so neither one simply wins. If you think in king size mattress dimensions in feet, a King is about 6’4″ by 6’8″. A Cal King stretches to a full 7 feet but gives up 4 inches across.
Width and length are standard across brands, so king size mattress dimensions stay predictable. Height is the part that changes with whichever Puffy model you choose.
Which Puffy King Size Mattress Is Right for You? Take the Quiz
Not sure which shape fits your space and sleeping crew? In about a minute, you’ll get a clear Puffy king pick based on the tallest sleeper, your room, your base, and any kids or pets, so you can stop second-guessing.
Puffy Standard King: 76 x 80 for Couples Who Want Width
How big is a king size mattress? The Puffy King is 76 by 80 inches, or about 6’4″ by 6’8″. That gives each of you 38 inches of width, the same as having your own Twin XL side by side, without a seam in the middle.
If a dog or a kid with a nightmare habitually claims the center, you’ll be glad for every inch of that width. The Puffy king size mattress is sold in all five models, from the all-foam Cloud to the made-to-order Legacy.
The only real downside is length. A King is 80 inches, or 6’8″, and a Cal King adds 4 more inches of legroom, a full 7 feet. Most people won’t notice, but tall sleepers often do.
Puffy California King Mattress: 72 x 84 for Tall Sleepers
The California king mattress dimensions are 72 by 84 inches, so you’re getting a full 7 feet of length. That’s the whole point. Compared with a King, you add 4 inches of legroom and give up 4 inches of width.
If the tallest person in your bed runs long, those extra inches keep feet from hanging off the end. If your bedroom is long and narrow, the Cal King also tends to fit the room’s proportions better.
This is where the king vs california king choice stops being abstract. Puffy makes the price part easy: it costs the same as a King on every model.
The shape really comes down to what your body and room need. Just keep two things in mind. The Cal King is narrower, so a couple plus a sprawling dog has noticeably less real estate.
Cal King bedding is different from King bedding. Pull out that old set of king sheets you’ve had for years, and they won’t fit.
Puffy Split King: Two Twin XLs for Adjustable Bases
A Split King is two separate Twin XL mattresses, each 38 by 80 inches, pushed together to make the same 76 by 80 footprint as a King. That means the split king mattress dimensions aren’t a different shape. They’re a different arrangement.
Puffy sells the Split King as two Twin XLs, which means you’ll see a seam down the middle and pay two Twin XL prices rather than one King price. The split king vs king question comes down to one thing: do you want each side to move independently?
The Split King doesn’t require an adjustable base. It’ll sit on any flat surface like any other Puffy. But it’s built for one.
If you want a Puffy split king adjustable base, the Serenity is a great fit. It comes in King and Split King at the same price, and both are two Twin XL bases with a sync cable.
Connect the cable and both sides move together. Leave it off, and one of you can sit up while the other lies flat.
For sheets, a Split King takes two Twin XL fitted sheets rather than one King fitted. A standard King fitted sheet will not fit snugly over two separate mattresses. Puffy’s own guidance is two Twin XL fitteds plus a king flat sheet.
Split King vs Split Head King
The Split Head King is a different animal. It’s one mattress whose head section is divided, so each side can raise the head while the bottom stays one piece.
Puffy makes it to order, ships in about 7 business days, charges $500 more than a King, and doesn’t sell it on the Legacy.
How Tall Is Each Puffy King? Height and Weight by Model
The width and length never change, but height depends entirely on which Puffy you order. All of these arrive rolled in boxes around 18 or 19 inches square and 42 to 45 inches tall.
| Model | Height | King weight* | Cal King weight* | Split King weight* (total) |
|---|---|---|---|---|
| Cloud | 10″ | 70 lb | 69 lb | 72 lb |
| Lux | 12″ | 115 lb | 109 lb | 114 lb |
| Royal | 14″ | 125 lb | 120 lb | 126 lb |
| Monarch | 16″ | 132 lb | 129 lb | 134 lb |
| Legacy | 16″ | 128 lb | 127 lb | 150 lb |
*Puffy’s published figures. A delivery team or two strong friends is a good idea either way.
A 10-inch Cloud is pretty easy to move and doesn’t demand much from your sheets. A 16-inch Monarch or Legacy is a different story, and you’ll want deep-pocket fitted sheets that can actually reach under the corners.
For most people, the 12-inch Lux hits the sweet spot, while the 14-inch Royal gives you a little more presence. If you’re torn between those two, here’s Puffy Lux and Royal compared.
Will a Puffy King Fit Your Room, Frame and Sheets?
For the room, a good rule of thumb from the Sleep Foundation’s mattress size guide is to leave about 24 inches around each side of your bed. That gives you room to walk, change sheets, and open drawers without shimmying sideways. Go much tighter and the room feels like a hotel closet.
If you’re not sure a king fits, you can work out the right bed size for your room with a few measurements.
For the base, Puffy says its mattresses work on almost any flat surface, from slats to box springs, adjustable bases or the floor. Puffy says to keep slats closely spaced.
Puffy’s own king-size options include the Midnight Foundation at $279 and the Serenity adjustable base at $2,198, at the time of writing on puffy.com. The Midnight comes in King and Cal King but not Split King.
The Serenity comes in King and Split King but not Cal King. Puffy’s bed frames come in King and Cal King, not Split King. Puffy rates King and Cal King mattresses for 350 lb on each side.
If you’re pairing a Split King with a base, make sure the whole setup can support your sleepers and the mattress before you commit. You can check the weight limit you need to see if it all works.
For sheets, the main thing is pocket depth. If you’re buying a 14-inch Royal or a 16-inch Monarch or Legacy, check the pocket depth against your model’s height.
Puffy only publishes dimensions for its Twin XL sheet set, and that pocket is 17 inches. Check the pocket depth on any sheets against your model’s height.
Puffy King Mattress Price by Model
A Puffy king mattress isn’t one price. The shape matters, but the model changes the number more than anything.
| Model | King | Cal King | Split King | Split Head King |
|---|---|---|---|---|
| Cloud | $1,249 | $1,249 | $1,498 | $1,749 |
| Lux | $1,749 | $1,749 | $2,198 | $2,249 |
| Royal | $2,749 | $2,749 | $2,998 | $3,249 |
| Monarch | $3,849 | $3,849 | $3,898 | $4,349 |
| Legacy | $6,299 | $6,299 | $7,998 | not sold |
*Prices on puffy.com at the time of writing.
King and Cal King cost the same on every model, so tall people aren’t paying a tall tax. The Split King is priced as two Twin XLs, so it costs more on every model.
The gap runs from $49 more on the Monarch to $449 more on the Lux, and $1,699 more on the Legacy.
The Puffy Lux king at $1,749 is the one I’d point most people toward.
Which Puffy Model Should You Get in a King?
Here’s the quick version of each option in a King.
Puffy Lux Hybrid
The Puffy Lux Hybrid is the pick for most side and combination sleepers because it's plush pressure relief over supportive coils.
- Strong pressure relief for side sleepers
- Good motion isolation for couples
- NapLab's top-scoring Puffy mattress
- Not firm enough for stomach sleepers
- Softer than back sleepers usually want
- Costs more than the Cloud
The Puffy Lux Hybrid king is 12 inches tall. It’s the one that suits most side and combination sleepers and couples.
Puffy Cloud
The Puffy Cloud is the budget-friendly pick for lighter side sleepers, with a 10-inch all-foam build that's medium-firm.
- Lowest price in the Puffy lineup
- Good motion isolation for couples
- Suits lighter side sleepers under 230 pounds
- Not for hot sleepers
- Weak edge support
- Not thick enough for heavier sleepers
The Cloud is the budget pick at $1,249 for a King. It’s 10 inches tall and all-foam, so it suits lighter bodies or a guest room you don’t want to overthink.
Puffy Royal Hybrid
The Puffy Royal Hybrid suits people who want zoned support and extra height, with a 14-inch build that's two inches taller than the Lux.
- Five-zone support system
- Two extra inches of height
- Plush comfort on a taller build
- Off-gassing can linger for weeks
- Weaker motion isolation than Lux
- Not always a better bed than Lux
The Royal is for back and combination sleepers who want zoned support. It’s 14 inches tall and feels a little more substantial under you.
Puffy Monarch Hybrid
The Puffy Monarch Hybrid is the luxury pick, and it's a 16-inch latex, memory foam, and alpaca wool bed that testers rate as the softest Puffy.
- Softest Puffy by testers' numbers
- Luxury materials like alpaca wool
- 16 inches of plush comfort
- Off-gassing can linger for weeks
- No Twin or Full size
- Too soft for stomach sleepers
The Monarch is the deepest cushion of the reviewed models at 16 inches tall. The Legacy is also 16 inches, made to order at $6,299 for a King, and too new for independent reviews.
If you want a deeper dive, my guide to how the four main Puffy models differ goes layer by layer.
Frequently Asked Questions
How much does a Puffy king size mattress cost?
A king ranges from $1,249 for the Cloud to $6,299 for the Legacy.
What is the difference between a king and a split king mattress?
A King is one 76 by 80 inch mattress, while a Split King is two 38 by 80 inch Twin XLs side by side. Both cover the same floor space. A Split King lets each side move independently on an adjustable base.
Is a split king the same as 2 twin XL?
Yes. A Split King is exactly two Twin XL mattresses, each 38 by 80 inches, making 76 by 80 inches together. Puffy prices its Split King as two Twin XLs.
What are the dimensions of a California King mattress?
A California King is 72 inches wide and 84 inches long, or 4 inches narrower and 4 inches longer than a King. On Puffy models, the height still depends on which mattress you pick.
Is a king mattress equal to two twins?
No. Two Twins are each 38 by 75 inches, so together they’re 76 by 75 inches, which is 5 inches shorter than a King. Two Twin XLs at 38 by 80 inches do match a King’s 76 by 80 inches.
Final Thoughts: Which Puffy King Should You Buy?
For most couples, the standard Puffy king mattress is the one. It gives each person 38 inches of width, and Puffy says its mattresses work on any flat base.
If someone in your bed is tall, take the Cal King and its 84 inches of length. If you’re getting a split adjustable base, the Split King is the obvious play, since each side can move without arguing.
And if you want one unified mattress but independent head positions, the Split Head King does that.
Whatever you pick, you’ve got up to 365 nights to change your mind, and returns open after 30 nights. That’s the safety net that makes this whole thing feel a lot less final.