Microwave sizes: a guide to common dimensions
Microwaves are a go-to for convenient cooking, but figuring out what size you need can be less than convenient, especially if you’re installing the microwave between cabinets. While most microwaves will have about 1 to 2.2 cubic feet of interior space, the exterior dimensions will vary based on the microwave type. Whether you’re working with countertop, over-the-range, wall oven combination or built-in microwaves, use this microwave size guide to help you find the optimal fit.
What are standard microwave sizes?
Microwave sizes are fairly standardized with most over-the-range microwaves measuring around 30" wide, 17" high and 15" to 18" deep with the door closed. Built-in microwave sizes also tend to match standard cabinet dimensions. While browsing products, look at the cut-out dimensions as well as the product dimensions to help you find a microwave that fits in existing cabinetry. If you’re shopping for a countertop microwave, you can take your pick of compact or extra large sizes to fit your available space and mealtime needs.
COUNTERTOP MICROWAVE SIZES AND DIMENSIONS
Countertop microwaves can be placed on any stable, flat surface. Some countertop microwaves can also be installed in cabinets with an additional trim kit. A trim kit includes a frame and ducts that encase the microwave inside a cabinet cut-out for a built-in look.
COMPACT OR SMALL MICROWAVE DIMENSIONS
Capacity usually delivers around 0.5 to 0.9 cubic feet of interior space.
Width typically ranges from 15 to 19 inches.
Height often runs from 10 to 11 inches.
Depth is measured with the door closed and open since you’ll need enough space for the door to fully swing out. Closed-door depths range from about 12 to 16 inches. Open-door depths range from about 23 to 30 inches.
STANDARD AND LARGE MICROWAVE DIMENSIONS
Capacity usually comes in just over 1.0 cubic foot up to around 2.2 cubic feet on the larger end.
Widths can range from about 21 to 25 inches. If you’re installing in cabinets, a trim kit will usually bring the width to 27 or 30 inches.
Height is usually around 12 to 15 inches.
Closed-door depths range from roughly 16 to 20 inches. Open-door depths range from roughly 34 to 39 inches.
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STANDARD OVER-THE-RANGE MICROWAVE DIMENSIONS
Over-the-range microwaves let you get your microwave off the countertop. Most also function as kitchen vent hoods to help vent out smoke, odor and grease coming off the cooktop below.
Interior space ranges from 0.8 cubic feet for more compact microwaves up to 2.1 cubic feet for full-sized models. Low profile models usually offer just over 1 cubic foot of space.
Widths will all be roughly 30 inches to match the standard width of the range below and the standard cabinet width where the microwave will be mounted. Compact over-the-range microwaves are less common but are usually around 24 inches wide.
Heights are usually around 17 inches. If you’re working with a shorter cutout, look at low profile microwaves, which are a little over 10 inches high to make more room above the range.
Closed door depths range from 15 to 18 inches. Open-door depths range from 42 to 45 inches. Because over-the-range microwaves all have similar widths, the open door depths will also be similar.
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Built-In Microwave Dimensions
Built-in microwaves are installed directly into pre-existing cabinetry, creating a clean, flush look and opening up space elsewhere in the kitchen. They can be installed in a cabinet or under a counter, and usually pull out like a drawer or open down like a wall oven.
Capacity can range from 1.0 to 2.2 cubic feet, with most landing between 1.2 to 1.6 cubic feet.
Widths align with standard cabinet widths, usually 24, 27 or 30 inches.
Height typically ranges from 17 to 22 inches.
Depths range from roughly 20 to 25 inches with the door closed and 30 to 35 inches with the door open.
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Microwave Sizes Chart
Skim through the microwave sizes chart below to quickly compare common heights, widths and depths of different microwave types.
TYPE OF MICROWAVE | HEIGHT (IN.) | WIDTH (IN.) | DEPTH (IN.)1 | CAPACITY (CU.FT.) |
---|---|---|---|---|
Small Countertop Microwave |
10" - 11" | 15" - 18" | 12" - 16" | 0.5 cu. ft. - 0.9 cu. ft. |
Standard and Large Microwaves | 12" - 15" | 21" - 25" | 16" - 20" | 1.0 cu. ft. - 2.2 cu. ft. |
Over-the-Range Microwave |
17" 10" (low profile) |
30" 24" (compact) |
15" - 18" | 0.8 cu. ft. - 2.1 cu. ft. |
Built-In Microwave |
17" - 22" | 24", 27" or 30" | 20" - 25" | 1.0 cu. ft. - 2.2 cu. ft. |
How to measure a microwave’s dimensions
Countertop microwaves
When figuring out what size microwave you need, measure the height, width and depth of your current microwave or the space on your countertop or shelves you want it to occupy. Account for the following:
1 inch of ventilation space between the microwave and the wall behind it.
3 inches of space from the edge of the counter to the open microwave door to avoid tipping.
At least 2 feet of space between the microwave and the range.
Over-the-range & built-in microwaves
Measuring the height, width and depth of your existing microwave enclosure is more important than the measurements of your current appliance when it comes to over-the-range and built-in microwaves. Measure cabinet-to-cabinet accounting for the following:
30 inches from the top of the stove to the top of the cabinet cut out for over-the-range microwaves.
6 inches of clearance between any walls and the microwave so the microwave door can open fully.
Check your manufacturer’s instructions to ensure you have the right amount of ventilation space around the microwave. Built-in microwaves usually require professional installation.
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