Quick answer
The best place for a microwave is a dedicated shelf or tower cavity with its base at 1,100 to 1,400 mm off the floor, where hot dishes come out at forearm height. On the bench it works fine but surrenders roughly 600 mm of prep space. Above the fridge is the one placement to rule out entirely.
Key points
- A benchtop microwave commands about 600 mm of your best prep bench. In a small kitchen that can be a quarter of the working run.
- The ergonomic sweet spot is a shelf or cavity with the microwave base at 1,100 to 1,400 mm: hot dishes come out at forearm height, no overhead reach, no crouch.
- In a 2,220 mm tower with the oven floor at 700 to 800 mm, a stacked microwave lands at about 1,300 to 1,400 mm, the top of the band.
- Above the fridge fails on safety: the cavity top sits past 1,800 mm, which means blind, overhead lifts of hot liquid.
- Landlords and future-proofers: an open shelf takes any replacement microwave; a trim-kit cavity is married to one model.
Parked in the corner of the bench, cord looped behind the toaster to share a power point, breadboard leaning against its flank: the microwave sits exactly where it landed on move-in day. Every other appliance got a planned home. The fridge has a cavity, the oven has a housing, the dishwasher has its own 600 mm gap, and the microwave, used more times a day than any of them, squats on the bench like a guest who never left.
It deserves ten deliberate minutes at design time, because the placement options differ sharply in ergonomics, cost and what they do to your prep space. There are five real options and one trap.
On the bench: honest, cheap, and 600 mm of prep gone
Start with the default, because it is not stupid. A benchtop microwave needs no joinery, no trim kit and no planning, and it sits at a usable height on the 900 mm bench. The cost is space: allowing for the appliance and the maker's breathing room around it, a microwave commands roughly a 600 mm stretch of bench, and it always lands on the most convenient run, precisely the bench you most need for prep.
Whether that matters depends entirely on how much bench you have. On a long L-shape with generous runs, losing 600 mm to an appliance you use hourly is a fair trade. In a townhouse galley where the whole working run might be 2,400 mm, the microwave is eating a quarter of it, and moving it off the bench is the single cheapest space win available, the same order of magnitude as the tricks in designing a small kitchen that feels bigger. If the bench is where yours stays, at least give it a corner with its own power point rather than a shared one, and keep it off the main prep run between sink and cooktop.
The shelf at 1,100 to 1,400 mm: the ergonomic sweet spot
The best value placement in the kitchen is an open shelf or open cavity in the joinery with the microwave base somewhere between 1,100 and 1,400 mm off the floor. That band is where your forearms naturally hold a load with elbows bent. A bowl of soup on full power comes out level, at a height where you can see into it, with no crouch and no overhead reach. Lower is workable; higher starts to be a lift.
Build the cavity honestly. Size it wider and deeper than the current appliance rather than snug to it, so the maker's ventilation clearances are met and the next microwave fits too. Put the power point inside the cavity behind or beside the appliance so no cord dangles. Make the shelf a solid fixed panel carrying real weight, a family-size microwave is a two-hand lift, screwed into the cabinet sides rather than sitting on shelf pins. An open cavity like this usually replaces one 600 mm section of upper cabinet or the top of a tall unit, which is storage you can genuinely spare more easily than bench, as the audit in kitchen storage that actually gets used tends to prove.
In the tower: stacked with the wall oven
If your kitchen has a full-height tower, the microwave's natural home is inside it, stacked above the wall oven. The arithmetic needs saying honestly: a wall oven is roughly 600 mm tall, so in a 2,220 mm tower the stack only works when the oven floor sits at 700 to 800 mm, which lands the cavity above at about 1,300 to 1,400 mm, the top of the sweet band. Push the oven floor to 900 and the stacked microwave rises to around 1,500 mm, an overhead lift, at which point it belongs on a separate shelf instead. Both cooking boxes in one column keeps the bench clear, and the trade-off is that the oven takes the lower half of its own band. Getting the stack order and heights right is its own topic, covered properly in wall oven height and tower cabinet design.
Two build details decide whether the tower version works. First, ventilation: a microwave in a closed column needs the clearances its maker specifies, top, sides and rear, and those come off the joinery drawing, not off hope. Second, power: the GPO goes in the cavity or the adjacent cupboard where it can be reached without pulling the appliance, because a microwave hard-wired into inaccessibility becomes a service call the day it trips.
Placements ranked: the 1,100 to 1,400 mm band wins, the bench trades away 600 mm of prep, and above the fridge means a blind overhead lift of something hot.
Trim kits and drawer microwaves: the cost honesty
A trim kit gives a benchtop-style microwave the fully built-in look: a frame, usually stainless or matching the appliance, that closes the gap between microwave and cabinetry with the venting path designed in. It looks factory-made because it is. The honesty is that the kit is a paid accessory on top of the appliance, it fits one model family only, and when that microwave dies the replacement has to match the cutout or the front gets recut. For an owner kitchen chasing a seamed-in look it is a fair spend; for anyone else the open cavity does the job for the cost of a shelf.
Microwave drawers are the premium answer: a drawer unit under the bench, contents loaded from above, nothing at eye level at all. They keep uppers clean in island-focused kitchens and they suit universal-design briefs where a standing lift is the thing to avoid. The cost honesty is blunt, a drawer model runs multiples of an equivalent benchtop unit before installation, and repairs sit at appliance-technician rates. We fit them where the design brief truly wants no microwave visible above bench height, and we say plainly that a shelf at 1,100 mm delivers most of the ergonomics for a fraction of the money.
| Placement | Height of base | Verdict |
|---|---|---|
| Open shelf / cavity | 1,100–1,400 mm | Best all-round: ergonomic, cheap, model-agnostic |
| Tower, above wall oven | ≈1,300–1,400 mm | Works when the oven floor sits at 700–800 mm |
| Benchtop | 900 mm (bench) | Fine where bench is abundant; costs 600 mm of prep |
| Microwave drawer | Below bench | Ergonomic and invisible; multiples of the cost |
| Above fridge | 1,800 mm+ | No. Hot, heavy, overhead and blind |
Why above the fridge is the one hard no
Fridge cavities for standard and french-door units run 1,800 mm and more to the underside of the cabinet above, which puts a microwave perched up there with its floor above most people's shoulders and its interior out of sight. Every retrieval is an overhead lift of something hot, often liquid, executed blind. A two-litre jug of soup coming out at 1,900 mm over a person's face is not a risk worth any amount of tidy-looking joinery, and shorter members of the household lose the appliance entirely.
The placement survives in old layouts because the space above the fridge looks free. It is free because nothing that gets lifted hot should live there. Use that void for a cupboard holding the roasting dishes you touch monthly, and put the microwave at forearm height where it belongs. We decline to build above-fridge microwave shelves when asked, and we explain exactly this.
Power and clearance: the details that decide whether it works
Wherever the microwave lands, two details are non-negotiable. The first is a dedicated GPO placed inside the cavity, behind or beside the appliance, positioned so a hand can reach the plug without removing the microwave. Cords draped over splashbacks and shared double outlets behind toasters are how the bench corner turns into a tangle. The electrician's hour at design stage is the cheap version of this; chasing a new power point into a finished splashback is the dear one.
The second is air. Microwaves shed heat and steam, and every maker publishes minimum clearances, top, rear and sides, for built-in or cavity use. Take the model's clearance sheet to the joinery drawing before anything is cut, and if the model is not chosen yet, size the cavity generously and confirm before manufacture; a site measure locks final dimensions anyway, and this is exactly the sort of thing it exists to catch. While the sparky is pricing the GPO, think about lighting the cavity's surroundings too, since a microwave usually sits at the edge of the task zones covered in kitchen lighting, task, ambient and under-cabinet.
What we'd do
In a kitchen that carries a tower, the microwave goes in the tower above the wall oven, base landing at about 1,300 to 1,400 mm off a 700 to 800 mm oven floor, GPO in the cavity, clearances off the maker's sheet. Without a tower, it gets a purpose-built open cavity at the same heights, one 600 mm module wide, positioned off the main prep run. In rentals, always the open shelf, never a trim kit. On generous benches, the benchtop is a legitimate answer and we will say so. Above the fridge, never, and we will say that too. Drawer microwaves are for the specific brief that wants nothing above the bench and has the budget to mean it.
The next step costs nothing: measure your current microwave, width, depth and height, download the clearance page from the maker's site, and see which of your cabinets could give up a 600 mm cavity at 1,100 mm. If you are planning a whole kitchen, standard module widths make this easy to test, the same logic as the layouts in standard kitchen sizes for NZ townhouses, and the designer on our site will show you what moving the microwave off the bench frees up across the rest of the run.
Frequently asked questions
Where is the best place to put a microwave in a kitchen?
A dedicated shelf or tower cavity with the microwave base at 1,100 to 1,400 mm off the floor. At that height hot dishes come out at forearm level with full sight of the contents, no crouching and no overhead lift. In a wall-oven tower with the oven floor at 700 to 800 mm, the cavity above lands at about 1,300 to 1,400 mm, the top of that band. Keep it off the main prep run between sink and cooktop.
Is it OK to put a microwave above the fridge?
No. A fridge cavity runs 1,800 mm or more, so a microwave up there sits above shoulder height for almost everyone. Every retrieval becomes a blind overhead lift of something hot, often liquid, and shorter household members cannot use it at all. Use the space above the fridge for rarely-touched storage and put the microwave at forearm height instead.
What height should a microwave shelf be?
Set the shelf so the microwave base sits between 1,100 and 1,400 mm off the floor. That keeps the door handle and controls in easy reach and hot dishes exiting level with your forearms. Make the shelf a fixed, screwed-in panel rather than one on shelf pins, size the cavity larger than the current appliance, and put a power point inside the cavity.
Do built-in microwaves need ventilation space?
Yes. Every maker publishes minimum clearances for cavity or built-in use, typically around the top, rear and sides, and a microwave boxed tight to the joinery runs hot and fails early. Take the clearance sheet from the exact model to the joinery drawing before anything is cut, or size the cavity generously if the model is undecided, and confirm at site measure before manufacture.
Are microwave drawers worth the money?
They are the most expensive placement by a wide margin, running multiples of an equivalent benchtop unit. They earn it in two situations: island-centred kitchens where the design wants nothing above bench height, and universal-design briefs avoiding standing lifts. For everyone else, an open cavity at 1,100 to 1,400 mm delivers most of the same ergonomics for the cost of a shelf.
What should landlords do with the microwave in a rental kitchen?
Build an open shelf or cavity, sized generously, with a power point inside it, and let the appliance be freestanding. Rental microwaves get replaced every few years and no two models share dimensions, so a trim-kit cutout married to one model becomes a joinery problem at each replacement. An open cavity accepts whatever the replacement is, keeps the bench clear, and costs almost nothing.
How much bench space does a microwave take up?
Budget roughly 600 mm of bench run once the appliance and its breathing room are allowed for, and in practice it claims the most convenient corner, which is usually prime prep space. On a long run that trade is fine. In a compact galley where the working bench might total 2,400 mm, moving the microwave to a shelf is the cheapest 600 mm of prep you will ever recover.