Your countertop has roughly 20 inches of width to spare, and the last microwave you owned left cold edges on your leftovers. The 20-inch oven category fills a specific niche: wide enough to fit a standard dinner plate without the turntable scraping the walls, yet compact enough to slide under a cabinet or sit next to the coffee maker. The challenge is sorting real power delivery from inflated wattage claims.
I’m Min — the co-founder and writer behind Gadgets Feed. I’ve spent hundreds of hours cross-referencing wattage curves, interior dimensions, and real customer heating patterns to separate the genuinely even-cooking machines from the ones that just look the part.
This guide focuses on countertop models near the 20-inch width bracket, each evaluated for actual heating performance and daily usability. Here is my curated selection of the best 20 microwave oven options for 2025.
How To Choose The Best 20 Microwave Oven
The 20-inch width bracket is deceptively tricky. A model listed as 1.1 cubic feet can have interior dimensions that barely fit a 10-inch plate, while another with the same cubic rating leaves 2 inches of clearance. You must look beyond the volume spec and verify the turntable diameter and the usable floor space. Wattage, preset variety, and build materials — interior lining and door seal — also separate a five-year appliance from a two-year frustration.
Wattage and Heating Consistency
Most 20-inch countertop microwaves sit between 700 and 1100 watts. Below 900 watts, reheating soup or defrosting ground beef takes noticeably longer and often leaves cold pockets. At 1000 watts or higher, the magnetron cycles more aggressively, which usually translates to faster cook times and fewer cold spots — assuming the manufacturer uses an even-distribution stirrer, not just a lower-cost design. Check reviews for phrases like “cold edges” or “heats unevenly” to spot the weak performers.
Grill Function vs Standard Reheating
A microwave with a built-in grill element, like the Emerson models in this guide, uses an infrared heating rod to brown the top of food — pizza, casseroles, toast — after or during microwave cooking. This adds 2–3 inches to the unit depth and usually adds weight, but it eliminates the need for a separate toaster oven. If you want that crispy finish on leftovers without firing up the big oven, prioritize models that combine a grill with at least 1000 watts of microwave power.
Child Safety Lock and Control Layout
Nearly every modern microwave includes a child lock, but the activation method differs substantially. Some models require holding the Cancel button for 5 seconds; others have a physical latch behind the door that demands a screwdriver to deactivate. If you plan to disable the lock permanently, look for a button-based model that stores the setting in memory. Also, pay attention to the control panel layout — membrane switches wear out faster than mechanical buttons, and poorly labeled presets make the microwave harder to use daily.
Quick Comparison
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| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| GE Countertop 1.4 Cu Ft | Premium | Sensor cooking with large capacity | 1100W / 1.4 cu ft / Sensor Cook | Amazon |
| Emerson MWG1191SB | Premium | Grill function with high wattage | 1100W / 1.1 cu ft / Built-in Grill | Amazon |
| Brabantia BBEK1145DG | Premium | Compact 20L with grill and 13 programs | 700W / 20L / 13 Auto Programs | Amazon |
| Emerson MWRG0901BK-A | Mid-Range | Retro styling with grill capability | 800W / 0.9 cu ft / 1000W Grill | Amazon |
| Chefman 1.1 Cu Ft | Mid-Range | Mute button and easy-clean interior | 1000W / 1.1 cu ft / Mute Option | Amazon |
| Farberware 1.1 Cu Ft | Mid-Range | Express cooking and defrost versatility | 1000W / 1.1 cu ft / Defrost by Weight | Amazon |
| BLACK+DECKER EM0P04P11 | Budget | Fingerprint-resistant budget pick | 1000W / 1.1 cu ft / Express Cooking | Amazon |
In‑Depth Reviews
1. GE Countertop Microwave Oven, 1.4 Cu Ft
The GE 1.4-cubic-foot model packs 1100 watts into a 21.75-inch-wide chassis, giving you the largest usable interior in this comparison. The sensor cooking system adjusts time and power automatically based on steam emitted from the food, which essentially eliminates the guesswork for reheating leftovers or cooking frozen meals. The glass turntable rotates smoothly across a 13.5-inch track, accommodating oval casserole dishes without scraping the walls.
The two-step child lock is a physical latch behind the door that some users disable permanently with a screwdriver — a design decision that prioritizes safety over convenience. The control panel uses membrane buttons with Instant On express controls for 1 through 6 minutes, plus dedicated presets for popcorn, pizza, beverage, and reheat. The interior light is bright enough to monitor cooking progress without opening the door.
Weight and time defrost options work reliably: entering the food weight automatically sets the optimal power level and cycle length. The white exterior finish resists smudging and matches most modern kitchens. At this wattage and capacity, the GE delivers the most even heating across the largest surface area of any model here.
Why it’s great
- Sensor cooking eliminates manual power adjustments for most foods
- 1.4 cu ft interior fits large dishes without crowding
Good to know
- Child lock requires a screwdriver to fully disable
- Buttons can be hard to read in low light
2. Emerson MWG1191SB 1.1 Cu Ft
The Emerson MWG1191SB is the only unit in this test that combines 1100 watts of microwave power with a dedicated grill element, allowing you to crisp pizza edges and brown casserole tops without a separate appliance. The grill mode uses a quartz heating rod mounted at the top of the cavity, and you can run it in pure grill mode or in one of three combo levels that alternate between microwave and grill energy for faster cooking.
The interior measures 1.1 cubic feet with a stainless steel lining that resists stains and odors better than painted enamel. Nine preset cooking options cover popcorn, potato, pizza, beverage, frozen vegetables, and meat, plus an auto defrost that adjusts time based on weight. The control layout uses retro-style buttons with a chromed handle, giving it a classic diner appearance that stands out against the standard black-and-stainless crowd.
Some users report that the grill element runs hot — cooking times may be shorter than expected, so checking food early is wise. The child safety lock is button-based and easy to activate or disable. At this price point, the double functionality (microwave plus grill) makes the Emerson a strong candidate for anyone who wants browning without buying a toaster oven.
Why it’s great
- Built-in grill handles browning and crisping tasks
- Stainless steel interior resists staining and odors
Good to know
- Grill runs hot; reduce cook times by 10-15%
- Some units develop condensation buildup
3. Brabantia BBEK1145DG 20L
The Brabantia BBEK1145DG takes a different approach: 700 watts of microwave power paired with a grill function in a 20-liter (roughly 0.7 cubic feet) cavity. The wattage is lower than the American-standard 1000W, but the 13 automatic programs — ranging from soup to grilled fish — take the guesswork out of settings by adjusting time and power per the food type. The scroll-wheel control and LED display make program selection intuitive.
The mirrored black exterior with interior lighting gives it a modern, almost premium appliance feel. The 9.6-inch glass turntable and included grill rack are dishwasher safe. At 11.28 kilograms (roughly 25 pounds), this unit is heavier than its size suggests, largely due to the grill element and robust door construction. The combination modes (microwave + grill) work well for gratins, omelets, and roasted potatoes.
The trade-off is clear: lower wattage means longer cook times for standard reheating — expect about 30% longer than a 1000W unit for tasks like heating soup. But the automatic programs compensate by optimizing the power level for each dish. If your primary needs are browning and defrosting with presets, the Brabantia delivers strong results in a compact footprint.
Why it’s great
- 13 automatic programs simplify cooking for varied dishes
- Mirrored black housing and grill function add versatility
Good to know
- 700W is underpowered for fast reheating
- Heavier than similarly sized units
4. Emerson MWRG0901BK-A 0.9 Cu Ft
The Emerson MWRG0901BK-A brings a gloss-black retro aesthetic with chromed accents and a pull-handle door, designed to evoke mid-century diner appliances. Underneath the nostalgic exterior, it offers 800 watts of microwave power and a separate 1000-watt grill function, letting you toast sandwiches or crisp pizza toppings without switching to a toaster oven. The 0.9 cubic foot interior is smaller than the 1.1 cu ft standard, but the grill rod sits at the top of the cavity, so you lose less usable height than expected.
Eight auto menus cover meat, popcorn, potato, soup, and grill-specific settings, plus time and weight defrost. The control panel uses mechanical knobs and buttons — a hybrid approach that feels tactile and avoids the membrane-switch wear common on cheaper models. The glass turntable is removable and dishwasher safe. The child lock is button-based and straightforward.
The 800-watt microwave output means reheating takes slightly longer than a 1000W model — about 15–20 seconds extra per minute of cooking. However, the grill function compensates for this by adding browning capability that no standard microwave provides. If your kitchen decor leans retro and you want grill versatility in a smaller footprint, this Emerson is a stylish workhorse.
Why it’s great
- Retro gloss-black design stands out on any counter
- Grill function crisps food without a separate appliance
Good to know
- 800W microwave power is slower than 1000W alternatives
- Controls have a learning curve for new users
5. Chefman Countertop Microwave 1.1 Cu Ft
The Chefman 1.1 cu ft microwave hits the sweet spot of 1000 watts in a 20.1-inch-wide frame, with one standout feature: a dedicated mute button that silences all beeps — ideal for apartment dwellers or parents cooking during nap time. The interior is stainless steel, which wipes clean easily and resists odors. The glass turntable is top-rack dishwasher safe, simplifying cleanup after greasy popcorn or saucy leftovers.
Three cooking presets cover popcorn, beverages, and leftovers, and the +30 seconds button adds time in 30-second increments up to 99 minutes. The 10 power levels range from low (melt butter) to high (rapid cooking). The child safety lock is handle-mounted: you pull upward on the top edge of the handle to open the door, which prevents accidental opening by toddlers. Some users find the quick-set system less convenient than a numeric keypad, but the trade-off is a simpler interface with fewer buttons.
Noise level is noticeably lower than the 1100W GE model — the Chefman operates at a hum rather than a whine. The unit weighs 30.9 pounds, which is heavier than the competition in this wattage class, likely due to the robust handle mechanism and thicker door seal. If noise reduction is your priority, this is the quietest 1000W oven in the list.
Why it’s great
- Mute button silences all beeps for quiet operation
- Stainless steel interior resists staining and is easy to clean
Good to know
- Quick-set controls require extra steps for manual time entry
- Heavier than similar 1000W models
6. Farberware 1.1 Cu Ft Countertop Microwave
The Farberware 1.1 cu ft microwave delivers a straightforward, no-nonsense experience: 1000 watts, six one-touch presets (popcorn, potato, pizza, beverage, frozen vegetables, dinner plate), and an express cooking system that lets you press 1 through 6 for instant minute-by-minute cooking. The clear LED display shows the kitchen timer and clock simultaneously, and the interior light provides enough visibility to check food status without opening the door.
The defrost system offers both weight-based and time-based options, giving flexibility for different food types. The control layout places the Time Cook and Power buttons on the top row, which makes manual adjustments faster than models that bury these functions in submenus. The child safety lock is activated by holding the Cancel button for 5 seconds — easy to enable and disable without tools.
Some users report that the 5-finish beeps are identical in tone to a coffee maker, which can cause confusion. The unit is relatively quiet during operation compared to older Farberware generations. The stainless steel finish resists fingerprints moderately well. For a reliable basic microwave that heats evenly and offers defrost flexibility, this Farberware hits the mark without extra frills.
Why it’s great
- Express cooking buttons (1-6) for instant minute-by-minute heating
- Dual defrost options (weight and time) for flexible thawing
Good to know
- Finish beeps are loud and may be confused with other appliances
- Presets are fewer than some competing models
7. BLACK+DECKER EM0P04P11 1.1 Cu Ft
The BLACK+DECKER EM0P04P11 offers the most accessible entry point into the 1000-watt, 1.1 cubic foot category without sacrificing essential features. The six one-touch presets — popcorn, potato, pizza, frozen vegetable, beverage, and dinner plate — cover the most common reheating tasks. The express cooking feature lets you press any number key 1 through 6 to start that many minutes of cooking immediately, eliminating the need to press Start.
The fingerprint-resistant black finish keeps the exterior looking clean even with frequent use. The child safety lock is activated by holding the Cancel button for 5 seconds and can be disabled by holding it again — no screwdriver required. The 10 power levels provide enough granularity for tasks ranging from melting chocolate to boiling water. The 20.6-inch width fits standard counter space easily.
Some users note that the auto-lock feature is enabled by default, which requires an initial read of the manual to disable. The door lock button is clearly labeled. The membrane switch control panel is responsive, though it may wear faster than mechanical buttons. For the price, this BLACK+DECKER delivers the same core performance as models costing significantly more, making it the clear value leader.
Why it’s great
- Fingerprint-resistant black finish stays clean looking
- Express cooking buttons (1-6) for instant start
Good to know
- Auto-lock is enabled by default; manual required to disable
- Membrane switches may wear faster than mechanical buttons
FAQ
What is the difference between 800 watts and 1100 watts in a 20-inch microwave?
Do grill-function microwaves replace a toaster oven?
How do I disable the child lock on these microwaves?
Final Thoughts: The Verdict
For most users, the best 20 microwave oven winner is the GE Countertop 1.4 Cu Ft because its sensor cooking and 1100-watt output deliver the most consistent heating across the largest interior. If you want browning capability without a second appliance, grab the Emerson MWG1191SB with its built-in grill. And for the budget-friendly value that still delivers 1000 watts and express cooking, nothing beats the BLACK+DECKER EM0P04P11.