Will That Bed Actually Fit? A Room-First Guide to Choosing a Mattress in NZ
The short answer
Measure the room before you shop, not the bed. Leave 70 cm of clear floor on three sides and you will always be able to walk around, open a wardrobe, and make the bed. A Queen (153 × 203 cm) needs roughly a 3.0 × 2.8 m room to do that. If your room is smaller, a Double or King Single will feel bigger than a Queen you have to shuffle past.
Start with the floor you have left, not the bed
Almost every bed-buying conversation starts in the wrong place. Someone decides they want a King, measures the wall, works out that 167 cm will physically go between two walls that are 3.2 m apart, and buys it. It fits. It also turns the bedroom into a room you edge around sideways with the laundry basket.
The number that decides whether a bedroom works is not the width of the bed. It is the width of the floor left over. Get that right and almost any size works; get it wrong and the most expensive mattress in the country will still be in a room you do not enjoy walking into.
The 70 cm figure
Seventy centimetres of clear floor on three sides is what we recommend, and it is the figure most of the trade works to. That is roughly the width of an open wardrobe door, and enough to stand, turn, and tuck a sheet in without climbing onto the mattress. Below about 60 cm, a bedroom starts to read as a corridor with a bed in it.
Three sides, not four. One long side can sit against a wall in most New Zealand bedrooms without anything being lost — unless two people share the bed, in which case whoever sleeps on the wall side spends the next ten years climbing over their partner at 6 am.
Where you can go under 70 cm
Two places, and only two. The foot of the bed can drop to about 50 cm if nothing opens into that space — no wardrobe doors, no drawers, no doorway swinging in. And a bed pushed into a corner in a child's room is normal; kids do not need to walk around three sides of a single mattress, and the reclaimed floor is worth more to them than the access.
Minimum room size, by mattress size
These are the room dimensions that leave 70 cm clear on three sides. They assume nothing else on the floor. Add a bedside table each side and you want another 45–50 cm of width; add a chest of drawers and you need a metre of clear floor in front of it for the drawers to open.
| Mattress | Mattress (cm) | Room minimum | Works best for |
|---|---|---|---|
| Single | 92 × 188 | 2.4 × 2.6 m | Children's rooms, box rooms, bunks |
| King Single | 107 × 203 | 2.5 × 2.8 m | Teenagers, tall solo sleepers |
| Double | 138 × 188 | 2.8 × 2.6 m | One adult with room to spread, spare rooms |
| Queen | 153 × 203 | 3.0 × 2.8 m | Most New Zealand main bedrooms |
| King | 167 × 203 | 3.1 × 2.8 m | Couples who want their own space |
| Super King | 183 × 203 | 3.3 × 2.8 m | Large rooms, co-sleeping families |
Two things worth noticing in that table. The first is that the room minimum barely moves between a Queen and a King — 10 cm of room width buys you 14 cm of bed. If your room is already close, the King is often the better value of the two.
The second is the jump from Double to Queen. It looks like 15 cm of width, which does not sound like much. But it is also 15 cm of length, and the length is what stops a 1.85 m adult sleeping with their heels over the end.
Measure the route, not just the spot
A mattress that fits the room still has to get to the room. Pocket spring mattresses do not fold, and a Super King is 183 cm of rigid panel. Delivery day is a bad time to discover the stairs turn.
Walk the route with a tape measure before you order:
- The front door, and the diagonal you can actually swing through it — not just its width
- The hallway at its narrowest point, which is usually where the linen cupboard or the hot water cupboard juts out
- Stair turns and landings. The classic failure is a 1920s villa with a quarter-turn at the top and a 90 cm landing
- Ceiling height above the stairs, if the mattress has to travel on its edge
- The bedroom door itself, and whether it opens inward into the space you were planning to put the bed
Most mattresses go through on their edge, which is why doorway width is rarely the problem. Corners are. A 203 cm mattress needs the diagonal of the space it is turning in to be greater than 203 cm, and landings are exactly where that runs out.
The quick version of that check: stand in the tightest corner of the route and measure from the inside of one wall to the outside of the opposite one, on the diagonal. If that number is smaller than the length of the mattress, it will not turn, no matter how the delivery team holds it. Villas and 1970s townhouses are the usual culprits; anywhere with a straight run from the front door is fine.
Apartments have their own version. A lift car is often shorter than a Queen, so the mattress has to stand on its end — which means the lift ceiling has to clear 203 cm, and most do not. If the lift is out, the stairwell is the route, and that is a turn on every floor. Worth a phone call to the building manager before you order rather than after.
Construction does not change any of this. A latex mattress or a bamboo mattress is exactly as rigid as a pocket spring going round a corner. Only folding models behave differently.
When the route is the problem, not the room
If the room takes a Queen but the stairs will not, there is one style that goes anywhere: a portable folding foam mattress folds down to a fraction of its size and will get round any corner in the house. It is also the answer for a spare room you want back when nobody is staying.
The third dimension nobody measures
Length and width get measured. Depth almost never does — and depth is what makes a bed awkward rather than uncomfortable.
Betalife mattresses run from 15 cm to 32 cm deep. That range matters more than it sounds. A 32 cm mattress on a base that is already 35 cm high puts the sleeping surface at 67 cm off the floor, which is higher than most kitchen benches. It is a genuine nuisance for shorter people, for anyone with stiff knees, and for a child moving out of a cot.
| Combination | Base | Mattress | Surface height | Feels like |
|---|---|---|---|---|
| Low platform + slim mattress | 20 cm | 15 cm | 35 cm | Low; easy for small children, a stretch to get up from |
| Standard base + mid mattress | 30 cm | 23 cm | 53 cm | About chair height — comfortable for most adults |
| Storage base + deep mattress | 35 cm | 32 cm | 67 cm | High; you climb up rather than sit down |
Depth also decides your sheets. Anything over 30 cm needs deep-fitted sheets — standard ones will pop off the corners in the night, every night. Check the depth before you buy the linen, not after.
Who each size actually suits
Room size sets the ceiling. Within that ceiling, the right size depends on how many people are in the bed and how tall they are.
| Situation | Smallest that works | Why |
|---|---|---|
| One child under 10 | Single | 188 cm of length lasts to roughly age 12 |
| Teenager, or a tall solo sleeper | King Single | 203 cm long, only 15 cm wider than a Single |
| One adult who likes room | Double | Room to sprawl without a Queen's floor footprint |
| Two adults | Queen | 76 cm each — a Double gives each person 69 cm |
| Two adults, one restless | King | 83 cm each, and movement is easier to isolate across more springs |
| Co-sleeping with a child | Super King | 183 cm takes three bodies without anyone on the edge |
That fourth row is the one that surprises people. Split down the middle, a Double gives each adult 69 cm — less width than a child gets in a single bed. It is entirely possible to sleep two adults in a Double, and plenty of people do it happily for years. But it is worth knowing that is what you are choosing, rather than discovering it in month three.
Length is the quieter version of the same problem. A Double and a Single are both 188 cm. A King Single, Queen, King and Super King are all 203 cm. If anyone in the bed is over about 1.80 m, that 15 cm is the single most useful thing you can buy.
Six mistakes we see most often
| Mistake | What it costs | Fix |
|---|---|---|
| Buying the biggest bed the room will physically hold | No usable floor; the room stops working as a room | Size to the clearance, not to the walls |
| Measuring the room but not the doorways | Delivery arrives and cannot get it in | Walk the whole route with a tape first |
| Ignoring mattress depth | Bed too high to sit down on; fitted sheets pop off | Add base height and mattress depth before you buy either |
| Reusing a base that is past it | The new mattress settles into the old base's dips and uneven support | Check the slats are unbroken, evenly spaced and not bowed before you reuse it |
| Forgetting the door swing | The bedroom door hits the bed or a bedside table | Mark the door's arc on the floor with tape before you commit |
| Sizing up when the real problem is feel | A bigger bed that is still the wrong firmness | Size and firmness are separate problems — see below |
The tape-on-the-floor test
Before you order anything, mark the mattress footprint on the bedroom floor with masking tape, then mark the arc of the door and the pull-out depth of any drawers. Live with it for a day. It costs nothing, takes ten minutes, and it is the only test that catches all six mistakes above at once.
If the room cannot take the size you want
Before you give up on a Queen, there are three changes that buy back floor without touching the bed.
The first is storage. A bed frame with drawers underneath can replace a chest of drawers somewhere else in the room, and a chest needs a metre of clear floor in front of it to open. Moving that storage under the bed is usually worth more floor than the 15 cm you would save by dropping to a Double.
The second is the bedside tables. Wall-mounted lights and a narrow floating shelf do the same job as two bedside tables and take no floor at all — that is 45–50 cm back on each side.
The third is honest reassessment of what else is in there. A full-length mirror, a chair nobody sits on, a laundry basket: bedroom furniture earns its place or it does not. Clearing one item is often the difference between a room that takes a Queen and one that does not.
If none of that works, drop the size rather than the clearance. A Double in a room you can walk around beats a Queen you edge past.
Size and feel are separate problems
A bigger bed does not fix a mattress that sleeps too firm, and the most common reason people replace a mattress early is feel, not size. If you are waking up sore, or too hot, or you sink in further than you want to, going up a size will not change any of it.
Betalife prints a firmness number on every mattress — 1 to 10, where 10 is softest — so you can compare two beds directly instead of trying to interpret words like "plush" or "supportive". Our in-stock range runs from 2 to 6.
| Number | Level | Typically suits | Browse |
|---|---|---|---|
| 1–3 | Firm | Stomach sleepers | Firm feel |
| 4 | Medium Firm | Back sleepers | Medium Firm feel |
| 5 | Medium | Most sleepers | Medium feel |
| 6–7 | Medium Plush | Side sleepers | Medium Plush feel |
| 8–10 | Plush | Side sleepers who want more give | — |
Half steps follow the whole number below them, so a 4.5 sits in Medium Firm. The scale is the same whichever construction you are looking at, which means you can compare a pocket spring against a memory foam or a latex mattress on one number rather than on adjectives.
If your current mattress is close but not quite right, that is worth knowing before you replace it — a mattress topper shifts the surface feel by about one to one and a half steps toward soft, which is sometimes all that is needed.
Putting it together
The order that works:
- Measure the room and subtract 70 cm on three sides. That gives you your maximum size.
- Check the delivery route can take it.
- Within that size, check the length against the tallest person who will sleep in it.
- Add base height and mattress depth and decide whether the total is a height you want.
- Only then choose the firmness number — and if the bed you already own is close but not quite right, price a topper before a replacement.
Do it in that order and you cannot end up with the two outcomes that actually make people regret a bed: a room that no longer works, or a mattress that is the right size and the wrong feel.
Questions we get asked
How much space do I need around a bed?
Seventy centimetres of clear floor on three sides. That is enough to walk past, open a wardrobe door and make the bed. One long side can go against a wall unless two people share it.
What is the minimum room size for a Queen bed in NZ?
About 3.0 × 2.8 m for a 153 × 203 cm Queen with 70 cm clear on three sides. Add roughly 50 cm of width if you want a bedside table on each side.
Is a Double big enough for two adults?
It fits two, but each person gets 69 cm — narrower than a single bed. For two adults sharing every night, a Queen is the smallest we would recommend.
Will a King mattress fit through a standard doorway?
Usually, because it travels on its edge. The problems are stair turns, small landings and tight hallway corners, not the door itself. Measure the whole route rather than the doorway.
Does mattress depth matter?
Yes, for two reasons. It sets the total bed height once you add the base, and anything over 30 cm needs deep-fitted sheets. Betalife mattresses run 15 to 32 cm.
Can I use my old bed base with a new mattress?
Check it first. Slats should be unbroken, evenly spaced and not bowed. A base that already sags will pass that shape straight through to a new mattress. If your mattress came with base requirements, follow those — they vary by model.
Do I need new pillows when I change mattress?
Not automatically, but it is worth checking. A firmer mattress lets your shoulder sit higher, so the pillow that suited your old bed may now push your neck out of line. Change one thing at a time and judge after a week.
What is the most common bed size in New Zealand?
Queen, by a clear margin. It is the largest size most New Zealand main bedrooms take while leaving usable floor around it.
Should I size up if my mattress feels wrong?
No. If you are waking sore or too hot, that is firmness or materials rather than size. Check the firmness number of what you have against the scale above before buying anything larger.
