Over the range microwave measurements cover width, height, depth, and clearance so your new unit fits your cabinets, cooktop, and venting.
Getting the measurements right above your stove saves money, time, and stress when you pick an over the range microwave and plan the install.
Good over the range microwave dimensions help you avoid doors that slam into cabinets, vents that choke, or a unit that hangs too low over open burners.
In this guide you will learn the standard sizes, clearance rules, and a simple measuring routine so you can match the microwave to your kitchen layout with confidence.
Over The Range Microwave Measurements Basics
Before you pull out a tape, it helps to know which measurements matter most for an over the range microwave and how they relate to your cabinets and cooktop.
The table below shows the main over the range microwave measurements you should record in almost every kitchen.
| Measurement Area | Typical Range | What To Check |
|---|---|---|
| Microwave Width | 29–30 in | Match upper cabinet width, usually 30 in. |
| Microwave Height | 16–18 in | Check that bottom leaves enough space over burners. |
| Microwave Depth | 15–18 in door closed | Confirm it does not stick far past cabinet faces. |
| Cabinet Opening Width | At least 30 in | Opening should be slightly wider than the microwave body. |
| Cabinet Depth | 12–14 in | Make sure doors can open fully without hitting nearby walls. |
| Cooktop To Cabinet Gap | About 30 in | Follow your range and microwave manuals for minimum clearance. |
| Floor To Microwave Bottom | Around 54–66 in | Choose a height that keeps controls near eye level for users. |
| Venting Space | Room for duct or recirculation kit | Check path for vent ductwork and room for filters above the unit. |
These numbers describe the space, but you still need to measure your actual cabinets, walls, and range so the real layout matches the chart.
Standard Over The Range Microwave Sizes
Manufacturers design most over the range microwaves to sit above a 30 inch range and under a 30 inch upper cabinet, so sizes are pretty consistent across brands.
Typical over the range microwave dimensions land around 29 to 30 inches wide, 16 to 18 inches high, and 15 to 18 inches deep with the door closed.
Brands such as Whirlpool and KitchenAid list similar width, height, and depth ranges in a
Whirlpool microwave size guide.
Door open depth can reach 40 to 45 inches, so measure how far the door swings into a walkway, and check that people can pass by safely when it is open.
Capacity for these units usually falls between 1.7 and 2.1 cubic feet, which is enough for a dinner plate, casserole dish, or tall mug.
How To Measure Your Cabinet And Range Area
Accurate measurements come from a simple stepped routine, not guesswork, so gather a few basic tools before you start.
Tools You Need For Measuring
You only need a metal tape measure, a step stool, painter’s tape or sticky notes, and a pencil or marker for labeling each measurement.
Measure Cabinet Width And Height
Stand in front of the range and measure the full width of the upper cabinet run above it, from left stile to right stile.
If you have a single cabinet above the range, measure just that box; if you have several, mark the 30 inch span where the microwave will live.
Next, measure from the bottom of the cabinet frame down to the cooking surface to confirm your cooktop to cabinet gap.
Many manufacturers and installers call for about 30 inches from the gas or electric cooktop to the bottom of the cabinet or microwave, and GE publishes this 30 inch gap in its
over the range microwave clearance rules.
Measure Cabinet Depth And Door Swing
Measure cabinet depth from the wall tile or drywall face to the front edge of the cabinet frame, then compare it to the depth of the microwave body.
Most units are a little deeper than the cabinets so they stick out, which can help catch steam, but extra depth in a tight walkway may feel awkward.
Open a nearby cabinet door and think about the microwave door in the same plane to be sure handles and corners will not collide.
Check Wall, Power, And Vent Path
Look inside the cabinet for an outlet, then make sure the wall behind the range has solid framing where the mounting bracket will attach.
If you plan to vent outside, note the duct size and direction, and measure any soffit or ceiling drop that might share space with the duct run.
For recirculating setups, check that there is room inside the cabinet for the charcoal filter housing and that louvers in any trim will not be blocked.
Measuring For Over The Range Microwaves In Small Kitchens
Not every kitchen follows the standard 30 inch range under a 30 inch cabinet, so over the range microwave dimensions matter even more in tight or older spaces.
If your cabinet run is narrower than 30 inches, you may need a 24 to 27 inch wide microwave or a redesign that adds a short filler on one side.
In a galley or small U shaped space, watch the depth so the microwave and its handle do not catch people walking past or block sight lines across the room.
Short household members may also struggle with tall over the range installations, so measure reach height for the person who uses the microwave most often.
Low profile over the range models trim height down to roughly 10 or 11 inches while keeping close to 30 inches of width, which can free a little space above the range for sight lines and backsplash tile.
Venting, Power, And Wall Strength
Over the range microwaves do more than heat food; they also move air and grease, so measurements need to include vent parts and electrical reach.
For vented setups, confirm the knockout location on the top or back of the microwave matches the path to your duct, then measure the duct diameter and note whether you have room to keep a straight run.
Many over the range models use a seven inch or six inch round duct, so if your home has smaller ductwork you may need an adapter that still preserves airflow.
For recirculating setups, your main measurement is cabinet space above the unit for the filter frame, charcoal filter, and any deflector piece that aims air through front vents.
Finally, check that the wall and cabinet framing can carry the microwave’s weight plus food, usually around 150 pounds, by confirming you can hit at least one wall stud and the cabinet box feels solid.
Replacing An Existing Over The Range Microwave
When you already have a unit in place, start with its model number and manual, then take fresh measurements so the new microwave lines up with the bracket and wall plate.
Measure the overall width, height, and depth of the old microwave, and also measure the distance between the top of the range and the bottom of the microwave front.
Next, measure from the wall to the front of nearby cabinets and compare that to the depth of the existing unit so you know how far the face sticks out.
Finally, note the locations of mounting bolts inside the upper cabinet and the wall bracket holes below, because a new microwave with a different pattern might call for fresh holes or a new bracket.
Common Over The Range Microwave Size Combinations
The chart below groups common over the range microwave measurements with cabinet layouts so you can match your room to a likely size range.
| Kitchen Setup | Typical Microwave Size (W×H×D) | Notes |
|---|---|---|
| Standard 30 in Range, 30 in Cabinet | 29–30 in W, 16–17 in H, 15–16 in D | Most common setup for new builds and full remodels. |
| Range Under Shallow 12 in Cabinet | Low profile model, around 10–11 in H, 29–30 in W | Keeps clearance while leaving extra headroom over front burners. |
| Narrow 24–27 In Cabinet Section | 24–27 in W, 15–16 in H, 14–15 in D | Good for small kitchens where a full 30 in unit will not fit. |
| Tall User, High Backsplash | Standard width, mounted toward lower end of clearance range | Helps keep controls and hot dishes closer to shoulder height. |
| Short User Or Kids Helping | Standard 30 in W, choose shallower depth if possible | Keeps door and plate closer to eye level so lifting feels easier. |
Simple Measurement Checklist Before You Buy
Use this quick checklist on shopping day so you can compare models on the shelf or online without guessing.
- Confirm cabinet opening width, height, and depth against the microwave’s product dimensions and recommended cutout size.
- Check cooktop to cabinet gap and compare it to the minimum clearance shown in each appliance manual.
- Measure from the floor to the cabinet bottom to be sure the control panel will fall near eye level.
- Review vent direction, duct size, and available route so you know whether the microwave can vent outside.
- Confirm there is a dedicated outlet in the upper cabinet and that cord length reaches without tension.
- Check wall and cabinet framing for solid attachment points at the bracket and top bolts, not just thin paneling.
- Compare door swing and handle depth against nearby doors, backsplashes, and walkways so traffic paths stay clear.
Once you have clear over the range microwave measurements written down, you can shop by comparing only models that truly fit, avoid costly returns, and work with installers or handy friends more smoothly, knowing every cabinet, wall, and cooktop dimension has already been checked. Good measurements turn a tricky install into routine.
