Average Size of Over-the-Range Microwave

Over-the-range microwave ovens are microwaves installed above the range. These ovens help to free up counter space giving your kitchen a streamlined space.

Unlike countertop models, over-the-range microwaves aren’t portable. They take the place of a range hood and come with a higher price tag.

They come in different sizes, and the one to go for depends on your kitchen space.

So, what’s the average size of an OTR microwave? How can you get the correct size for your home? You’ll find that out soon enough.

To ensure that you get the right OTR to fit your kitchen space, measure where you intend to place it first.

Why It’s Important to Get the Right Microwave Dimensions

Most OTR microwave ovens are roughly 30 inches wide and 17 inches tall, but other sizes are available as well. And since most ranges are of the same size, many kitchens have the same space for the microwave if it is to be installed above.

This doesn’t mean that you can’t get the right fit if your over the range space in your kitchen is smaller. Every microwave is designed differently; you only need to go through product descriptions to get the model with the exact dimensions to fit your space.

Microwaves come with 2 sets of dimensions – interior and exterior dimensions. With over-the-range microwaves, exterior dimensions are very important.

The depth of the microwave determines how far it’ll stick out from the wall. If taller, don’t go for a unit with a great depth, as it might hinder your ability to access the range with ease.

If shorter, accessing the range becomes troublesome as well. You could even hit your head on the bottom of your microwave when trying to do so.

Getting the correct interior dimensions is equally important, and it’s these dimensions determine the amount of food you can make with the unit.

Over-the-Range Microwave Dimensions

If planning to get an over-the-range microwave, ensure that you allow at least 30 inches from the top of the range to the bottom of your microwave and 66” between the floor and the bottom of the appliance. Check Price on AmazonGE 30″ Over-the-Range Microwave Oven 1000 watts 1.6 cu.ft, Dimensions:(W.D.H) 29.87″ x 15.25″x 16.5″,Net Weight: 63.0 lb,300-CFM,Two-speed

Also, follow any other additional clearance to the sides or above as advised by the manufacturer.

Listed below are the dimensions for typical over-the-range microwaves. We’ve arranged them by capacity.

  • 1.4 cubic feet – The units’ width range from 21 to 29 inches, height from 12 to 16 inches, and depths vary from 15 to 17 inches.
  • 1.5 cubic feet – The width of these units range from 23 to 29 inches, are usually 14 to 17 inches tall, and 15 to 16 inches deep.
  • 1.7 cubic feet – Widths of roughly 27 inches are typical of units with this capacity; the height range is usually between 16 to 17 inches, and depths range from 15 to 17 inches.
  • 1.8 cubic feet – OTR microwaves of this capacity boasts widths of around 29 inches, heights of about 16 inches, and depths of about 15 inches.
  • 2.0 cubic feet – These units’ width range between 24 and 29 inches have a height range of 13 to 16 and a depth of 15 to 19 inches.

What to Consider Other than the Microwave’s Size

Average Size of Over-the-Range Microwave

The following are other important things to consider when shopping for an OTR microwave;

Size of Your Family

The size of your family will determine the size of the microwave you will go for. Going for a small microwave makes no sense when you have a large household. You can’t cook enough food for such a family at a go.

Get a smaller unit if living on your own, have a small family, or just you and your spouse. If you host guests a lot or have a family of 5 and above, you need a bigger microwave oven.

Cubic Feet Per Minute ( CFM)

Check the CFM of the OTR microwave you have in mind before paying for it. The CFM indicates the venting power of the unit.

The higher the CFM, the more venting power the microwave has and vice versa.


The rule of the thumb is – the higher the wattage, the faster your food cooks. Note that most recipes require 900 to 1000 watts for optimal cooking results.

If you cook your food from scratch or cook a lot of frozen foods, aim for a higher wattage.

Cooking Habits

If you only need a microwave to help you warm leftovers, pop popcorns, prepare pasta, or heat your occasional cup of milk, you’ll be okay with a standard model. Check Price On Amazon, “BLACK and DECKER 0.9 Cu. Ft. Digital Microwave Oven with Turntable Push-Button Door”

However, if you’re into cooking and try everything from roasts to grills to whole meals, you need a microwave with advanced features like sensor or convection cooking.

Check price on Amazon to buyToshiba 1.5 CU.FT Countertop Microwave Oven with Convection, Smart Sensor Sound On/Off Function & LCD Display

Frequently Asked Questions

Q. What’s the average size of OTR microwaves?

Most models come with a depth of 15 to 16 inches, a width of 29 to 30 inches, and a height of 16 to 18 inches. Capacities range between 1.4 and 2.2 cubic feet.

Q. Are OTR microwaves standard size?

There are different variants of over-the-range microwave ovens in terms of height, width, and depth. However, most models are designed to fit into a 30 inches wide space.

Q. What’s the minimum height of an OTR microwave?

The minimum height of an over-the-range microwave is 66 inches.

Q. Is purchasing an over-the-range microwave a good idea?

Yes, it’s a great idea, especially if you have a smaller kitchen. The microwave also doubles as a hood vent.

Q. Do OTR microwaves require a hood?

You do not have to get a hood if you have an OTR microwave as it doubles as the hood.


Knowing the dimensions of an OTR microwave will help you avoid the frustration of getting a unit that barely fits your range. Getting the right fit also translates to a unit that meets your cooking needs and one that gives your kitchen the streamlined look you want.

We hope that this guide helps you get the right OTR microwave for your home. Good luck!

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