What Size Mattress Do You Need?
Twin to King — the right size comes down to who’s sleeping on it, your room, and whether you share. Here are the standard sizes and exactly who each one fits.
Standard sizes run Twin (~38″×75″), Twin XL (~38″×80″), Double/Full (~54″×75″), Queen (~60″×80″) and King (~76″×80″). A Split King is two Twin XL side by side (~76″×80″ total). Queen is the most popular all-rounder; King gives couples the most room. Pick based on who sleeps there, your room size, and whether you want each side to feel different. Confirm exact dimensions and feel in store — we carry every size at our 6 Saskatchewan locations.
Every Size, and Who It’s For.
Standard North American dimensions. Exact size can vary slightly by model — confirm in store.
The smallest standard size. Best for kids’ rooms, bunk beds, and tight guest rooms where floor space is at a premium.
Shop Twin →Same width as a Twin but 5″ longer — better for taller teens and adults. Two Twin XL also make up a Split King.
Shop Twin →Roomy for one adult, snug for two. A solid pick for a single sleeper who likes to spread out, or a smaller guest room.
Shop Double →The most popular size in Canada. Comfortable for couples and fits most main bedrooms. The all-rounder — start here if you’re unsure.
Shop Queen →Maximum space — each partner gets roughly the width of a Twin. Best for couples who want room, or who share with kids or pets. Needs a larger bedroom.
Shop King →A King’s footprint made of two separate mattresses, so each side can be its own firmness. Pair with an adjustable base and each side raises independently.
Explore Split King →Dimensions shown are standard North American sizes and are approximate — exact measurements vary by model. Always confirm the size against your bed frame in store. We also carry RV mattresses and Split Top setups.
Queen for Most. King for Room.
A Queen suits most couples and most bedrooms. Step up to a King and you each get about a Twin’s worth of personal space — worth it if you toss and turn, run hot, or share with little ones.
And if you and your partner never agree on feel, a Split King lets each side be its own firmness — the single best fix for mismatched sleepers.
How to Get the Size Right. Three Steps.
Measure once, choose with confidence.
Measure Your Room & Frame
Note your bedroom size and your existing frame. Leave room to walk around the bed and open drawers. Bring the numbers in.
Match Size to Sleepers
Who’s sleeping here, and do you share with a partner, kids, or pets? We’ll line your room up against Queen, King, and Split King in person.
Feel It, Then Take It Home
Try the real size on the floor at any of our 6 Saskatchewan stores. Free in-store pickup and free local front-door delivery, plus the 100 Night Sleep Guarantee and a 10-year warranty.
6 Saskatchewan Stores. See It in Person.
Twin to King and Split King on the floor — lie on the real size before you commit. 30-minute no-pressure fittings.
Find your nearest Modern Mattress.
6 stores. 4 cities. Same Canadian-made mattress lineup, same 100-night guarantee, same Free Local Front Door Delivery.
Quick Answers.
What we hear most when people are sizing up.
What size is best for couples?
A Queen suits most couples and bedrooms. A King gives each person about a Twin’s worth of space — best if you want maximum room or share with kids or pets.
Queen vs King — what’s the difference?
Both are about 80″ long. A Queen is ~60″ wide; a King is ~76″ wide. That extra width is the whole difference.
What’s a Split King?
Two Twin XL mattresses side by side — a King’s footprint, but each side can be its own firmness, and on an adjustable base each side raises independently.
What size for a kids’ or guest room?
Twin or Twin XL for kids and bunks; a Double/Full for a single adult or a snug guest room.
Do you carry RV and split sizes?
Yes — RV Queen (short queen) and RV King, plus Split King and Split Top setups. Bring your frame size and we’ll match it at any of our 6 SK stores.
Now Narrow Down the Feel.
Not Sure Which Size Fits Your Room?
Bring your measurements in. We’ll line up Queen, King, and Split King against your space and your sleep at any Modern Mattress store in Saskatchewan.