No, over range microwaves share a near-standard width, but height, depth and capacity vary so you still need to measure your space carefully.
Over range microwaves look alike at a glance, so it is easy to assume every model will slide into any open spot above a stove. Many buyers only learn the truth when a new unit bumps a cabinet door or hangs too low over the burners. A little size planning removes that headache.
This guide breaks down real over range microwave dimensions, shows where they match, where they differ, and how to check your cabinet opening before you order a replacement. By the end you will know exactly which measurements matter and how to pick a model that fits without surprise gaps or clashes.
Are All Over Range Microwaves The Same Size?
The direct reply to are all over range microwaves the same size? is no. Brands build them around a shared standard so most units fit a 30 inch wide range and the cabinets above it, yet there is still plenty of variation in height, depth, shape, and interior space.
Most full size over range microwaves sit near 30 inches wide, around 17 inches tall, and about 15 to 18 inches deep with the door closed. Compact and low profile designs come in narrower or flatter shapes, while some large capacity models stretch both height and depth. Those small changes can affect clearances above the cooktop, how far the door projects, and the way the unit lines up with nearby cabinets.
| Style | Typical Exterior Size (W × H × D) | Typical Capacity (cu ft) |
|---|---|---|
| Standard 30″ over range | 29–30″ × 16–18″ × 15–17″ | 1.6–2.1 |
| Compact over range | 23–24″ × 16–17″ × 14–16″ | 1.3–1.5 |
| Low profile over range | 29–30″ × 10–11″ × 18″ or less | 1.1–1.4 |
| Tall cavity over range | 29–30″ × 17–18″ × 16–17″ | 1.9–2.1 |
| Wide 36″ range match | 35–36″ × 16–18″ × 15–17″ | 1.9–2.1 |
| Older compact replacement | 26–28″ × 15–17″ × 14–16″ | 1.4–1.7 |
| Trim kit style hood combo | Varies by kit, often 29–30″ wide | 1.7–2.1 |
Standard Opening Size For Over Range Microwaves
Cabinet makers and appliance brands lean on a shared opening size so swapping an over range microwave stays simple. In many kitchens the space between wall cabinets above the stove measures close to 30 inches wide, with cabinet depth near 12 to 13 inches. New over range models are designed to hang under that cabinet box and match that spacing so you do not need major carpentry every time the appliance changes.
Manufacturers such as KitchenAid explain that most over range microwave bodies fall into a narrow band near 30 inches wide, 17 inches tall, and 15 to 18 inches deep, with compatible cabinet depth and cut out dimensions listed on their microwave dimensions guide. GE notes in its replacement advice that new over range units are built to fit the same 30 inch wide cabinet opening many older models used, as shown on its over-the-range microwave replacement page.
This does not mean every cabinet run measures exactly 30 inches. Some older or custom kitchens use narrower spans, thick face frames, or deeper wall cabinets. When the structure around the range falls outside the usual size band you may need a compact over range microwave or filler trim to reach a clean edge to edge line.
Over Range Microwave Size Differences That Matter
Even when two over range microwaves share the same width, the rest of their size profile can feel quite different in daily use. Height changes the amount of room left between the cooktop and the bottom of the microwave body. A tall unit gives more interior space but can shrink headroom above tall pots, while a low profile body leaves more space for large stockpots at the cost of a smaller cavity.
Depth also shifts the way a microwave interacts with surrounding cabinets. A shallow body that sits closer to the wall lines up neatly with standard wall cabinets, while a deep body may project further, which can hide the back burner from view for shorter cooks. Handle style plays a part as well, since a curved bar on the door can add another inch or two past the main shell.
Interior capacity depends on the cavity layout, not just the outside box. Some 30 inch wide models pack in tall turntables and broad side walls to reach more than two cubic feet, which suits big casserole dishes and microwave cookware. Others keep the interior tighter to leave room for larger fans or slim exterior lines. Reading both exterior measurements and stated capacity gives a clearer picture than size labels alone.
Height, Clearance, And Safety Limits Above The Range
Besides fit and style, size choices above the cooktop must respect clearance rules. Over range microwaves carry both installation instructions and local safety codes that control how high the base of the appliance can sit above gas or electric burners.
Guidance from brands such as GE shows a common pattern where the base of the cabinet above the range sits around 30 inches above the cooking surface, which places the bottom of the microwave near 16 to 18 inches above the burners once the unit is mounted on its bracket. Clearance notes also call for a minimum distance from the floor to the cabinet bottom and enough space at the sides for the door to swing freely.
Brands such as Whirlpool publish installation drawings that list minimum and maximum cabinet depth, required stud locations, and the load the upper cabinet must handle when the microwave and a full dish sit below it. These charts matter when a cabinet run has been altered, tiled, or braced in ways that shrink the opening around the original microwave outline.
Measuring For A Replacement Over Range Microwave
Good size decisions start with accurate measurements of the opening and the current appliance. A tape measure, a small notepad, and a step stool handle most homes. Take your time and write each number down so you can match specs on product pages without guessing.
Step 1: Measure The Cabinet Opening
Measure the distance between the left and right wall cabinets above the range at three points: near the wall, at the cabinet face, and just under the face where the mounting bracket sits. Use the smallest width you find, down to the nearest eighth of an inch. Repeat the process for depth from the wall to the front edge of the cabinet, and note both cabinet depth and the distance from the wall to the front of any decorative trim or moulding.
Step 2: Measure Height And Backsplash Area
Measure from the cooktop surface to the base of the upper cabinet at the rear, then again at the front edge, in case the cabinet bottom has trim pieces that reduce clearance. Compare this number with the installation range printed in the current microwave manual or on the product label. If you no longer have the booklet, many brands host free copies of installation guides on their sites, searchable by model number.
Step 3: Measure The Existing Microwave
Measure the current microwave body itself from side to side, top to bottom, and front to back. Include the handle in your depth measurement, since that part can collide with fridge doors, side walls, or tall users. Those dimensions give you a reference point when you compare spec sheets for new models that describe outside size, cavity size, and required cutout opening.
Over Range Microwave Size And Venting Layout
Another reason over range microwaves are not all the same size lies in their vent and duct layout. Some models vent through the top into a vertical duct, while others send air out the back into a horizontal run, or recirculate air through charcoal filters back into the room. Each layout can require different clearances above the cabinet or behind the unit.
Vent location influences how far the body can extend above or behind the cabinet. A tall body with a strong fan may need more room for an internal blower housing and duct collar, which can raise the overall height or pull the unit slightly forward. A low profile microwave trades some internal height for a thin body that stays tucked under the cabinet while still holding fan parts and grease filters.
| Measurement | Typical Range | Why It Matters |
|---|---|---|
| Cabinet opening width | 30″ standard, some 24″ or 36″ | Sets maximum microwave width before trim or fillers |
| Cabinet depth | 12–13″ common | Controls how far the microwave and handle project |
| Cooktop to cabinet bottom | About 30″ in many guides | Relates to safety clearances above burners |
| Microwave body height | 10–18″ by model | Changes headroom for pots and pans |
| Microwave body depth | 15–18″ with door closed | Affects how much the unit sticks past cabinets |
| Door swing depth | 42–45″ open | Needs clear path so the door can open fully |
| Interior capacity | About 1.4–2.1 cu ft | Determines pan size that fits on the turntable |
Over Range Microwave Size Choices For Different Kitchens
Once you have your measurements and a sense of standard over range microwave sizes, matching a model to your kitchen layout becomes easier. A small apartment kitchen with a 24 inch cabinet span calls for a compact over range unit that keeps the cooking space open and clears nearby walls. A big family kitchen with a full 30 inch opening and deep counters may suit a tall, wide cavity that holds baking dishes and tall pitchers.
Low profile models suit cooks who rely more on the range than the microwave. They leave extra room above the burners for tall stockpots, while still adding a vent hood, light, and basic microwave functions. Homeowners who use the microwave for large bowls and casserole pans can lean toward taller bodies with higher capacity ratings and strong fan systems.
Energy use and noise level also tie back to size. Larger fans and cavities tend to draw more power and may hum more at high fan speeds. Compact bodies can stay quieter yet may take longer to move steam and smoke away from the cooktop because of smaller fans and shorter filter runs.
Final Checks Before You Buy Or Replace
Before you click buy, stack the numbers from your cabinet, range, and old microwave next to the spec sheet for the model you like. Confirm that body width stays inside the opening width with a bit of wiggle room, that the height keeps the base of the microwave within the allowed distance above your cooktop, and that the depth plus handle does not bump nearby doors or walls.
Scan the installation guide for that model to check stud locations, bracket design, vent direction options, and any special clearance notes around tall backsplashes or side walls. Brands such as Whirlpool and GE publish these guides online so you can read every size line before any box arrives at your door.
With those checks finished, the question are all over range microwaves the same size? turns into a useful mental shortcut. The width will often fall into a familiar band, yet height, depth, capacity, and vent layout still vary enough that a few minutes with a tape measure is the safest path to a clean, built in look above your range.
