Quick Answer: A king bed with a mattress costs from $897 at Mattress Miracle: a $470 Elysian platform and a $427 foam mattress. A Beaudoin Level with a Sleep In Whitney is $2,109. The mattress is 76 by 80 inches, per the Better Sleep Council. Platforms need no box spring, and an Ontario order of $500 or more delivers free.
10 min read | Updated November 3, 2026
A king bed is the whole set: a 76 by 80 inch mattress, the frame or base under it, and often a headboard. At Mattress Miracle in Brantford you can price all of it on one floor. Our 40 king bed frames run from $470 to $1,990, and 41 king mattresses run from $302 to $4,315, prices checked November 3, 2026.
A king bed set means a mattress and a base bought to work together, and the mattress warranty decides which base it allows.
Dorothy Balicki, Mattress Miracle: "I always tell customers that the bed frame and the mattress are two separate investments with different lifespans. Your mattress should be replaced every 7 to 10 years. Your bed frame can last 15 to 20 years or more. A Beaudoin frame will outlive two or three mattresses. That is why I suggest customers think about the frame as the permanent piece and the mattress as the replaceable one."
How much does a king bed and mattress cost?
A king bed and mattress cost $897 to about $4,200 as a set at Mattress Miracle, before king sheets and a protector. The table uses real king listings, checked November 3, 2026. Each frame has its own slatted or solid platform, so no pairing needs a box spring.
King bed and mattress sets, priced
| King set | Frame (king) | Mattress (king) | Set price |
|---|---|---|---|
| Lowest-priced set | Elysian Velvet Platform, $470 | C.J. Mulholland Series 4000, 6-inch foam, $427 | $897 |
| Two-piece platform, flippable mattress | Beaudoin Level, $845 | Sleep In Whitney, two-sided, $1,264 | $2,109 |
| Upholstered bed, hybrid mattress | Beaudoin King Chelsea, $1,990 | SleepKing Husky Natural Life, tight top, $2,215 | $4,205 |
Add a king mattress protector from $49, and a box spring only if your mattress and frame call for one ($279.99 in king).
Cheap king bed with mattress: the $897 set
The Elysian Velvet Platform costs $470 in king, the least of any frame we list: a velvet bed with a diamond-tufted headboard on a platform base. Add the C.J. Mulholland Series 4000, a 6-inch foam mattress at $427 in king, and the set is $897. We would put it in a guest room or a first apartment, and spend more on the mattress for a bed two adults sleep on every night.
What a king size mattress costs on its own
King mattresses at Mattress Miracle start at $302, a 5-inch foam model made for RVs and bunk beds, and top out at $4,315 for the Restonic Revive St Charles and Elizabeth in copper latex. The median of our 41 king mattresses is $1,264, the price of the Whitney. The SleepKing Husky Natural Life hybrid in the top row of the table is our most consistent seller right now, at $2,215 in king with a tight top and $2,415 with a pillow top.
King bed frame prices by maker
Our 40 king frames split into two groups. IFDC makes 11, priced $470 (Elysian) up to $1,695 (Lethbridge, a storage bed). Beaudoin makes 29, and 28 of those are upholstered beds between $1,740 and $1,990. The Beaudoin Level platform bed is the exception at $845. Beaudoin's home page says its beds are "entirely conceived and manufactured in Canada." Our king bed frame buying guide covers centre support, weight ratings and the five frame types.
What goes under a king mattress?
A king mattress sits on a platform frame, a box spring on a frame, an adjustable base, or a pair of split king pieces. Foam and latex mattresses usually want a slatted or solid platform. Innerspring and many hybrids are built to sit on a foundation, and our box springs come in king and split king for them.
Mattress bases compared: platform, box spring, adjustable
| Base | Box spring needed? | King price at Mattress Miracle | Best with |
|---|---|---|---|
| Platform frame | No | 33 king platform beds, $470 to $1,990 | Foam, latex, hybrid, flippable |
| Box spring on a frame | Yes | King box spring $279.99; split king $310 | Innerspring and many hybrids |
| Adjustable base | Never | King from $799; split king from $2,100 | Mattresses the maker approves for adjustable bases |
| Beaudoin Level (two halves) | No | $845 | Foam, latex, hybrid and pocket coil, per our listing |
Platform beds: no box spring needed
A king platform bed carries the mattress on slats or panels, so nothing goes between frame and mattress and the bed sits lower. Our king platform beds include the Elysian and the Level from the set table. Beaudoin builds its king Level as two 39 by 80 inch platforms side by side, 78 inches across, rated at 1,200 lb and 13 inches tall on Beaudoin's spec page. Two halves also make the Level easier to carry up a narrow stair.
Box spring and split king box spring
A king box spring is a wood-and-steel foundation the full size of the mattress. Ours is the Sleep In standard box spring, $279.99 in king in 2, 5 or 7 1/2 inch heights. As a split king it is $310 in two 38 by 80 inch halves. Our listing notes that most people step into bed comfortably when frame, box spring and mattress together reach 24 to 27 inches.
Dorothy Balicki, Mattress Miracle: "I always check what foundation a customer plans to use before recommending a mattress. A great mattress on the wrong foundation is like good tires on bent rims. The performance just is not there."
Adjustable base and split king
An adjustable base replaces frame and box spring with a motorised deck that raises the head and feet. The lowest-priced of our king adjustable beds is the Ergomotion Quest 1.0 at $799. A split king puts two 38 by 80 inch mattresses on two linked halves, so each person sets their own side, from $2,100. Check that your mattress maker approves it for an adjustable base, and if you are buying one for a health reason such as reflux or snoring, ask your doctor first.
King bed frame with headboard, or a headboard on its own
A king bed frame with a headboard is one piece of furniture; a headboard on its own fixes to a frame you already own. Our king headboards are 11 Beaudoin designs from $600 to $800. The Ennis upholstered headboard is $600 in king and measures 78 inches wide by 46 inches tall, per our listing. Check the brackets on your frame before you order, and bring the measurements in if you are unsure.
Some people want the whole room to match. The King Charlotte bedroom set sells its pieces separately: a king bed frame in a driftwood grey finish, with a matching chest, dresser and mirror, and nightstands. For a bed made to order, our Lakewood bedroom sets take 8 to 12 weeks; the Style 4100 king bed complete is $2,547.
King bed room size: the floor, the door and the stairs
A king bed needs room for the whole set, and the headboard wall fills up first. The mattress is 76 inches wide, but the frame is wider: the Beaudoin Level is 78 inches, and the Ennis headboard is 78 inches. Add two 20-inch nightstands and the headboard wall needs 118 inches, just under 10 feet, before anyone walks past. A 12-foot wall leaves 26 inches to spare, 13 on each side. Our average bedroom dimensions guide shows which Canadian bedrooms take a king comfortably.
Brad Grose, founder, Mattress Miracle, family owned in Brantford since 1997, with 40+ years in the mattress industry: "We've been in Brantford since 1997, and on West Street since 2010, so we know Brantford's housing stock pretty well. The most common mistake we see is people buying a king for a bedroom that's really a comfortable queen room. They get it home, it fits, technically, but there's no room to walk around it and the room feels like a mattress storage unit. Five minutes of measuring beforehand would have pointed them to a queen and a much more livable room."
Then check the way in. In Ontario a bedroom door may be just 760 mm wide, a little under 30 inches, the minimum in Table 9.5.5.1 of the building code as the City of Oshawa's code guide sets it out. A mattress flexes enough to tilt through that. A rigid king box spring cannot, so for a tight stair or door order the split king box spring, two 38 by 80 inch halves for $310. The Better Sleep Council tells king buyers to measure the corridors, doors and stairwells the mattress has to pass through.
Storage beds help in a tight room, since drawers under the mattress can stand in for a dresser; leave clear floor about as deep as a drawer to open them. The Allison, at $675, is the lowest-priced of our king bed frames with storage, with two drawers at the foot.
King bed dimensions in Canada, in brief
The Better Sleep Council lists a king mattress at 76 by 80 inches (about 193 by 203 cm), about 16 inches wider than a 60 by 80 inch queen. Our king listings, such as the Series 4000 and the Whitney, give the same 76 by 80 inches. A California king is 72 by 84 inches, and none of our king frames comes in that size today. Our full king size mattress dimensions guide has the metric chart and a way to measure your room.
Choosing the best king bed with mattresses for two
The best king bed with mattresses for two people gives each sleeper enough room and enough quiet. A king gives each person 38 inches of width, the Better Sleep Council notes, about what each would have on a twin bed; a queen gives each person 30. Our split king vs king guide for couples covers the next choice, one mattress or two.
Couples sharing a king bed: the movement research
Sharing a bed adds movement. In a 1994 paper in Sleep, Pankhurst and Horne of Loughborough University followed 46 pairs of bed partners over 8 nights with wrist actimeters. Roughly one movement in three was matched by the partner inside the same 30-second slice of the night, and people sleeping with a partner moved more than matched people sleeping alone. Female partners said they were disturbed more often than male partners did, yet most participants slept better with their partner present. The study never compared bed sizes, so it cannot show that a wider bed cuts disturbance.
General buying information only, not medical advice. For sleep trouble that lasts, see your doctor.
Then choose the set by how you sleep. A flippable two-sided mattress like the Sleep In Whitney gets flipped and rotated to spread the wear. A heavy latex or hybrid mattress wants a frame with a published weight rating, and couples who sleep at different angles are the case for a split king. Every eligible mattress carries our 60-Night Comfort Guarantee, one exchange with no exchange fee, counted from the delivery date.
Bed frame and mattress delivery in Ontario
A king bed set delivers in Ontario only, because bed frames, headboards and box springs check out for Ontario addresses. Mattresses ship free. Furniture orders under $500 pay $80 delivery, and when the whole order reaches $500, delivery is free. Buying the frame and the mattress together is the simple way past that line.
Buying a king bed and mattress together from Brantford
Order online and white glove delivery and setup is free on most orders, anywhere up to 200 km from Brantford, including Paris, St. George, Stoney Creek, Milton, London, Toronto and Peterborough. Longer drives may carry a small distance fee, confirmed when you book. Old mattress removal is $20, arranged with delivery.
- Elysian frame alone ($470): under $500, so delivery is $80.
- Elysian frame plus Series 4000 mattress ($897): delivery is free.
- King box spring alone ($279.99): $80. Add it to a mattress order and it rides free.
Outside Ontario, the frame cannot ship from us, but some king mattresses can. Our mattresses that ship across Canada go rolled by courier.
King Bed and Mattress FAQs
What is a fair price for a king size mattress?
A fair price depends on the build. At Mattress Miracle a 6-inch king foam mattress starts at $427, and a two-sided flippable pocket coil like the Whitney is $1,264. Our king hybrids start at $980, and latex models reach $4,315.
What is the average price of a king size mattress?
Across our 41 king mattresses, the median price is $1,264, checked November 3, 2026. Thirteen cost under $1,000 and twelve cost $2,000 or more.
Do bed frames need a box spring?
Platform frames do not; the slats or panels hold the mattress. A frame of side rails and a couple of cross supports needs one, and adjustable bases never take one. Your mattress warranty has the final say, and our guide to whether you need a box spring in Canada goes through each mattress type.
What is the best bed frame for a king mattress?
One that holds up the middle of a 76-inch span and suits your mattress. For foam, latex and flippables, a platform with close slats or two halves, like the Beaudoin Level, works well. An innerspring built for a foundation needs a frame that takes a box spring.
Is it cheaper to build or buy a bed frame?
A homemade king frame can cost less in lumber, but it still has to carry a 76-inch span with centre support. Our lowest-priced king frame is $470 with a stated size and support. If you build, give it centre legs to the floor and check your mattress warranty for the widest slat gap it allows.
Which brand king size bed is best?
Judge a brand by what it publishes: sizes, weight ratings and warranty terms. Beaudoin lists a 1,200 lb rating for its king Level, and our Beaudoin model-by-model review compares its other beds. For mattresses we carry Sleep In, Restonic, Restonit, C.J. Mulholland and SleepKing in king, and you can lie on them in our Brantford showroom.
What's the best king size mattress for the money?
For many couples it is a two-sided mattress, because flipping and rotating spreads the wear over both sides. The Sleep In Whitney is $1,264 in king, the median price of our king range, and an advisor will show you others near that price.
What are the exact dimensions of a king bed in Canada?
A standard king mattress is 76 by 80 inches (about 193 by 203 cm), and the frame around it is wider, such as 78 inches for the Beaudoin Level. A California king is 72 by 84 inches.
What's the best king bed frame for a small condo?
Choose one of our king storage beds with drawers so the bed can stand in for a dresser. Measure the elevator and hallway too: a two-piece platform or a split king box spring is easier to bring up than one long piece.
How much does a good king bed frame cost?
Our king frames cost $470 to $1,990, and most Beaudoin upholstered king beds sit between $1,740 and $1,990. Adjustable king bases begin at $799, and a made-to-order Lakewood king bed complete starts at $2,547.
Can a king bed set be delivered outside Ontario?
Our bed frames, headboards and box springs deliver in Ontario only. Several king mattresses ship rolled across Canada by courier, so call (519) 770-0001 and we will tell you which ones reach your address.
See King Beds in Our Brantford Showroom
Mattress Miracle
441 1/2 West Street, Brantford
Phone: (519) 770-0001
Hours: Mon-Wed 10-6, Thu-Fri 10-7, Sat 10-5, Sun 12-4
Come in with the width of your stairwell and the size of your room, and an advisor will price a king mattress and frame together with you. Our team does not work on commission. Parking is free, right at the store, and there is a wheelchair entrance on the side; call ahead and someone will let you in. If you cannot get to Brantford, call during store hours and an advisor will walk the floor with you by phone.