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King Mattresses for Standard Bed Frames Mattress Selector

King mattresses measure 76" × 80" — the widest standard size, giving each partner the same personal space as a twin. They're the top choice for couples who want maximum room, families who co-sleep, and larger master bedrooms. Compare every king option below by brand, feel, and price.
These mattresses are built for a standard bed frame, box spring or platform bed rather than an adjustable base — solid, no-flex support for a classic setup. Shopping by feel or build instead? Browse by comfort (plush, medium, firm) or by type (memory foam, hybrid, pocket coil, traditional). Using an adjustable base? See our adjustable-bed-compatible mattresses. Every order includes a 365-night sleep trial and free delivery across Canada.
King Mattresses for Standard Bed Frames Mattress Selector
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  • National Mattress Orthopedic Classic 8-inch firm tight-top mattress, all-white quilted cover with dark piping NM Logo
    • Double Tempered Bonnel Coil with Edge Guard
    • Firm BioComfort™ Foam
    • Center & Lumbar Support
    • Dual Sided Cotton Support Quilt
    • 5 Year Warranty
    • Made In Canada
    King In stock for fast delivery $251
    Compare at $599
    Online availability icon In-Stock Only 6 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Sep 7
    Pickup available icon Only Pickup available to
    M5H 2N1
  • NM Orthopedic PLUS 10" Extra-Firm Euro Top Mattress
    BEST IN CLASS BEST SELLING TOP RATED
    National Mattress 10-inch extra-firm euro-top mattress, white damask-print top, black zigzag border band NM Logo
    • Double Tempered Bonnel Coil with Edge Guard
    • HD+™ High Density Foam
    • Center & Lumbar Support
    • Cotton Support Quilt
    • 10 Year Warranty
    • Made In Canada
    King $388
    Compare at $799
    Online availability icon Backorder Available
    In-Store availability icon On Display:
    Estimated delivery icon Estimated free delivery to M5H 2N1 on Tue, Sep 22
  • Springwall Chiro Medic 8-inch firm tight-top mattress, white damask top, black sides, grey piping Springwall Chiromedic Mattress Logo
    • 700 Continuous Coil
    • Bio-Foam Comfort Foam
    • Bio Comfort Quilted Stretch knit surface
    • SpringWALL Edge System
    • Pressure Balancing Design
    King In stock for fast delivery $391
    Compare at $899
    Online availability icon In-Stock Only 1 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Sep 7
    Pickup available icon Only Pickup available to
    M5H 2N1
  • NM Orthopedic 9.5" Firm Euro Top Mattress
    BEST IN CLASS TOP RATED TRENDING
    National Mattress 9.5-inch firm euro-top mattress, white diamond-quilted top with black quilted sides NM Logo
    • Double Tempered Bonnel Coil with Edge Guard
    • Center & Lumbar Support
    • Bio Foam Comfort Layers
    • 5 Year Warranty
    • Made In Toronto, Canada
    King In stock for fast delivery $396
    Compare at $699
    Online availability icon In-Stock Only 3 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Sep 7
    Pickup available icon Only Pickup available to
    M5H 2N1
  • Springwall Chiro Medic 8.5-inch medium-firm euro-top mattress, white quilted top, dark sides, silver piping Springwall Chiromedic Mattress Logo
    • 700 Continuous Coil
    • Bio-Foam Comfort Foam with Gel
    • Bio Comfort Quilted Stretch knit surface
    • SpringWALL Edge System
    • Pressure Balancing Design
    King $428
    Compare at $899
    Online availability icon Backorder Available
    In-Store availability icon On Display:
    Estimated delivery icon Estimated free delivery to M5H 2N1 on Tue, Sep 22
  • Springwall Chiro Medic 9.5-inch plush euro-top mattress, tall profile, white top, deep black quilted sides Springwall Chiromedic Mattress Logo
    • 700 Continuous Coil
    • Bio-Foam Comfort Foam with Gel
    • Bio Comfort Quilted Stretch knit surface
    • SpringWALL Edge System
    • Pressure Balancing Design
    King In stock for fast delivery $457
    Compare at $999
    Online availability icon In-Stock Only 1 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Sep 7
    Pickup available icon Only Pickup available to
    M5H 2N1
  • National Mattress Orthopedic Supreme 13-inch firm tight-top mattress, white top, grey-black diamond sides NM Logo
    • Double Tempered Bonnel Coil with Edge Guard
    • HD+™ High Density Foam
    • Center & Lumbar Support
    • Dual Sided Cotton Support Quilt
    • 10 Year Warranty
    • Made In Canada
    King In stock for fast delivery $587
    Compare at $1,099
    Online availability icon In-Stock Only 4 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Sep 7
    Pickup available icon Only Pickup available to
    M5H 2N1

7 Items

How the Mattress Selector Works

The selector asks the questions a good salesperson asks in the first two minutes — who the bed is for, your sleep position, your body type, where you ache, how warm you sleep, the feel you prefer, whether you want a pillow top, and (optionally) your budget — then uses your answers to narrow the range down to a shortlist. It draws on the same mattresses you can browse by hand, including Beautyrest, Serta, Sealy, Springwall, Tempur-Pedic and Stearns & Foster.

Answer the feel question honestly rather than aspirationally — if you’ve slept well on firm beds your whole life, say firm. Side sleepers generally need more give at the shoulder and hip, back and stomach sleepers want less sink so the spine stays neutral, and body weight changes how deeply any mattress compresses — which is why two people can lie on the same bed and honestly call it soft and firm. Whatever the selector suggests is a starting point, not a verdict: you can lie on the result at any of our seven Ontario showrooms, and every mattress it recommends carries the 365-night sleep trial.

A Filter, Not an Oracle

It narrows the full mattress range to a shortlist using what you tell it about how you sleep — treat the result as a starting point for browsing, not a verdict.

Matched to How You Sleep

Sleep position drives support needs: side sleepers generally need more give at the shoulder and hip, while back and stomach sleepers usually do better with less sink.

Protected by the 365-Night Trial

No form can know how a bed feels after three weeks — the 365-night sleep trial covers that part. Every mattress it recommends carries the trial, clearance and discontinued stock excepted — that’s sold as-is.

No Commission, No Steering

Our sleep experts aren’t paid commission — they earn the same whichever mattress you pick, and the same whether you buy today or not.

Frequently Asked Questions About the Mattress Selector

What does the mattress selector ask?
Who the bed is for, your sleep position, your body type, where you ache, how warm you sleep, the feel you prefer, whether you want a pillow top, and your budget. Budget is optional — leave it blank and you’ll still see a range of matches.
Is the mattress quiz accurate?
It’s accurate about what it can measure and silent about the rest. It narrows the field using what you told it about position, body type and feel — but it can’t tell you which of three well-matched mattresses you’ll personally love. Only lying on them can, which is what our showrooms and the 365-night sleep trial are for.
Will it push me toward expensive mattresses?
Nobody here earns more for selling you a dearer bed — our staff aren’t paid commission. What’s true is that better-built mattresses tend to cost more, so a shortlist weighted toward quality can skew upward. If that happens, set a budget and run it again, or sort the results by price and work from the other end.
Do I have to use the selector to shop?
No. If you already know what you want, browse all mattresses directly and filter by feel — plush to extra firm — by type like memory foam or hybrid, or by size. The selector exists for the much more common case of not knowing where to start.
Can I try my recommendation in person?
Yes — find your nearest of our seven Ontario showrooms and lie on your shortlist. Floor models are shared across the network: if a style is on display at any one store, its sizes are available to order company-wide, stock permitting.
What if the recommendation turns out to be wrong?
Then it’s wrong, and the 365-night sleep trial is how you fix it. A mattress needs a few weeks to break in and your body needs a few weeks to adjust — any trial short enough to expire before that has happened isn’t much of a trial.

Prefer to Browse — or Talk to a Person?

The selector is a shortcut, not a requirement. Browse the full range at your own pace, or visit a showroom and tell a non-commissioned sleep expert how you sleep — they do the same narrowing by hand, with better follow-up questions than any form can ask.

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