Countertop Microwave Sizes and Dimensions

On this page (7 sections)

1. What are common countertop microwave sizes?
2. How do you measure a countertop for a microwave?
3. Does capacity tell you which dishes will fit?
4. Which size suits your meals and kitchen?
5. What setup mistakes should you avoid?
6. How can you make the most of the size you choose?
7. How do you choose between countertop microwave sizes?

Countertop microwave sizes should match your regular dishes and usable counter space, with enough room for ventilation and door access. Start with those measurements, then choose the capacity and cooking features that fit your meals.

A small oven can handle daily reheating if your dishes fit. A larger one earns its space when you regularly warm wide plates or serving dishes.

For a broader look at controls and cooking features, see our countertop microwave buying guide.

What are common countertop microwave sizes?

Common countertop microwave sizes include compact 0.7–0.9 cu ft models, middle sizes around 1.0–1.2 cu ft, and family-size ovens of 2 cu ft or more. These are shopping groups, not fixed standards for outside dimensions.

Choose around your usual meals rather than household size alone. A family that reheats individual plates may need less space than one person who cooks in a wide casserole dish.

How do countertop microwave sizes compare by dimensions?

The four examples below range from 17.52 to 24.4 in wide. All measurements use the same order so you can compare them without swapping width and depth.

These are appliance dimensions, not the full space each installation needs. Add the clearance required by the model's manual before deciding that an oven fits beneath a cabinet or beside a wall.

How do you measure a countertop for a microwave?

Measure width, depth, and overhead space, then check ventilation and door access. A footprint that fits on the counter is only the first part of a usable setup.

1. Measure the clear width between walls, appliances, or other obstacles.
2. Measure counter depth from the backsplash to the front edge.
3. Measure from the counter to the lowest cabinet or shelf above it.
4. Compare those numbers with the oven dimensions and required clearances.
5. Check the door's path and the space needed to lift out your largest dish.
6. Confirm that the power cord can reach a suitable outlet as the manual directs.

Mark the proposed footprint with removable tape. Open nearby drawers and cabinet doors to spot conflicts, and leave working space beside the oven for setting down hot food.

Use a stable, level surface with all feet supported. Avoid a position that makes you reach across a sink or burner, and choose a height where you can see into the dish while lifting it.

For more layout options, see our microwave placement ideas for small kitchens.

Does capacity tell you which dishes will fit?

Capacity measures interior volume, so it cannot tell you whether a particular plate or casserole will rotate. Dish width, handles, height, and the shape of the cavity all matter.

Measure your largest regular plate across its widest point. For a rectangular dish, include the handles and consider the space its corners need as it turns.

Turntable diameter is a useful comparison, but it isn't a complete fit check. A dish may extend beyond the glass yet still rotate, or touch a wall despite seeming small enough.

Check tall mugs and food covers as well as dinner plates. If compact models suit your dish measurements, our small countertop microwave guide helps narrow the choices.

Which size suits your meals and kitchen?

Choose the smallest oven that comfortably holds your regular cookware and leaves a practical work area. The four models below suit different meal sizes and counter layouts.

Chefman 0.7 Cu Ft: for mugs, snacks, and limited counter space

Choose the Chefman for light reheating when preserving prep space matters. Skip it if wide dinner plates or large covered bowls are part of your daily routine.

Its 700 watts suit buyers willing to allow more time than they would with a higher-output oven. Use package directions for the appropriate wattage, then add short intervals as needed.

The mute button helps in a shared kitchen where beeps could disturb someone. Its handle safety lock opens by pulling upward on the top edge, so make sure everyone who will use it understands that action.

BLACK+DECKER 0.9 Cu Ft: for everyday individual meals

Choose this BLACK+DECKER when you want a step up from a very small oven without moving to a much larger footprint. Skip it if your regular cookware needs more room than its 10.6 in turntable and interior can accommodate.

The 900-watt output, 10 power settings, and 30-second express cooking support everyday reheating with room to adjust time and power. Lower settings are useful for foods that need gentler heating rather than repeated bursts at full power.

Its push-button door release is worth considering alongside your preferred kitchen layout. Keep access to both the release and the open doorway clear.

BLACK+DECKER 1.1 Cu Ft: for regular dinner-plate reheating

Choose this model when full meals are your main use and you have room for a wider oven. Skip it if mugs and small bowls cover almost everything you heat, especially when prep space is scarce.

Its 1000-watt output makes it a useful option for buyers comparing microwave cooking directions with their oven's power. The 6 preset buttons offer shortcuts, while manual time and power controls let you adjust for portion size.

Note the difference between 1000 watts of cooking output and 1600 watts of input power when checking electrical requirements. Our guide to how many watts a countertop microwave needs explains how cooking power affects your choice.

Sharp 2.2 Cu Ft: for larger portions and serving dishes

Choose the Sharp when wide serving dishes justify a large oven's footprint. Skip it if you mostly heat individual snacks or cannot spare a deep section of counter.

Its 1200-watt output, inverter cooking, and sensor cooking give you more cooking controls alongside the larger cavity. Melt/soften and weight or time defrost functions also suit households that use a microwave for food preparation.

Sharp offers an optional compatible trim kit for a built-in installation. Follow the model and kit instructions for that setup rather than fitting the oven into any available cabinet opening.

What setup mistakes should you avoid?

Avoid buying by capacity alone or squeezing the oven into a tight opening. Both mistakes can leave you with an appliance that fits poorly or lacks the airflow its instructions require.

Don't treat cooking output as electrical input when checking the outlet and circuit. Follow the manual's electrical directions, including its guidance on extension cords.

Keep vents clear of towels, storage baskets, and other appliances. A countertop location also needs enough room for you to remove food without tilting a hot bowl.

For enclosed placement, read whether a countertop microwave can go in a cabinet. If you want a finished built-in look, our countertop microwave trim kit guide explains the compatibility checks.

How can you make the most of the size you choose?

Use microwave-safe dishes that rotate freely, and leave room to lift them out securely. Don't pack the cavity so tightly that handles or a cover catch against the walls.

Spread leftovers in a shallow, even layer when practical. Stir or turn food during heating and follow any standing time in the food's directions so heat can spread through the meal.

Cover food with a vented microwave-safe cover to reduce splashes. Wipe spills once the interior is safe to touch, and keep the area beneath the turntable free of crumbs that can interfere with rotation.

Follow each model's cleaning directions for removable parts. The Chefman's glass turntable is top-rack dishwasher safe; don't assume that care instruction applies to the other models.

How do you choose between countertop microwave sizes?

Make the final choice using dish fit first, installation space second, and cooking needs third. Reject any model that fails either of the first two checks, even if its features appeal to you.

Choose Chefman for smaller meals and tight counters, or the BLACK+DECKER 0.9 Cu Ft for individual meals with a little more capacity. Move to the BLACK+DECKER 1.1 Cu Ft for regular dinner plates, and the Sharp for larger serving dishes.

Before ordering, compare your measurements with the manual's clearance requirements. Once countertop microwave sizes are settled, use our countertop microwave buying guide to choose the controls and features you'll use.

Frequently asked questions

What is a standard countertop microwave size?

There is no single standard countertop microwave size. Compact models often hold 0.7 to 0.9 cu ft, while larger household models can exceed 2 cu ft; use capacity to narrow your search, then compare exterior dimensions, dish fit, and the ventilation clearance required by each model's manual.

How much counter space does a countertop microwave need?

A countertop microwave needs room for its exterior dimensions plus the ventilation clearance required by its manual. Its feet must rest securely on a stable surface, and the door must open freely; check overhead cabinets, nearby walls, outlet access, and space to remove a hot dish with both hands.

Does microwave capacity tell you its outside dimensions?

No, capacity measures interior volume rather than exterior size. Two ovens with similar capacity can have different widths, depths, and heights because their designs differ; compare all three exterior measurements in the same order, then add the clearance required for airflow before deciding whether an oven fits.

What size microwave fits a dinner plate?

Choose a microwave whose usable interior lets your dinner plate sit flat and rotate without touching the walls or door. Measure the plate across its widest point and compare it with the turntable and interior dimensions; check tall food covers and dish handles too, since they need extra room.