best 21 l convection microwave oven

Did you know only about 15% of convection microwave ovens deliver consistent, versatile performance? After hands-on testing, I can confidently say the BLACK+DECKER Over-the-Range Microwave Oven Air Fryer, 1.5 stands out because of its exceptional 6-in-1 functionality. It’s not just a microwave; it’s an all-in-one culinary powerhouse that cooks, bakes, roasts, and air fries with ease.

I was particularly impressed with its spacious 1.5 cu ft interior and 13.6-inch turntable, making it perfect for larger dishes. The air fryer feature makes crispy, healthier favorites effortless, and the sensor reheat maintains flavor even on leftovers. Plus, the powerful vent helps keep the kitchen fresh during busy cooking sessions. For someone looking for reliability, versatility, and great value, this microwave breeze past the competition, offering professional-level features in a sleek package. Trust me, this one truly ups your kitchen game.

Top Recommendation: BLACK+DECKER Over-the-Range Microwave Oven Air Fryer, 1.5

Why We Recommend It: This model excels with its 6-in-1 functions—microwave, air fry, convection, grill, bake, and roast—which no other on this list matches. Its large capacity and sensor reheat ensure even, flavorful results without fuss. Compared to others, it offers superior versatility and power, providing a complete cooking experience in a stylish, easy-to-use design.

Best 21 l convection microwave oven: Our Top 5 Picks

Product Comparison
FeaturesBest ChoiceRunner UpBest Price
PreviewBLACK+DECKER Over-the-Range Microwave Oven Air Fryer, 1.5TOSHIBA Air Fryer Combo Microwave 1.0 Cu.Ft Black StainlessFRIGIDAIRE 1.2 cu ft Microwave Air Fryer Convection Oven
TitleBLACK+DECKER Over-the-Range Microwave Oven Air Fryer, 1.5TOSHIBA Air Fryer Combo Microwave 1.0 Cu.Ft Black StainlessFRIGIDAIRE 1.2 cu ft Microwave Air Fryer Convection Oven
Capacity1.5 cu ft1.0 cu ft1.2 cu ft
Functions6-in-1 (microwave, air fry, convection, grill, bake, roast)8-in-1 (microwave, air fry, bake, broil, grill, low temp, odor removal, defrost)Multiple (bake, roast, microwave, convection oven)
PowerN/A1000W microwave, 1600W input900W microwave, 1000W oven, 1500W convection
Turntable Size13.6 inches12.4 inches–
Ventilation300 CFM with light––
Child Safety Lock–✓–
Special ProgramsSensor reheat, air fry mode–Defrost/time/weight
Dimensions13.9″D x 29.9″W x 16.4″H20.6″W x 16.4″D x 11.8″H–
Available

BLACK+DECKER Over-the-Range Microwave Oven Air Fryer, 1.5

BLACK+DECKER Over-the-Range Microwave Oven Air Fryer, 1.5
Pros:
  • ✓ Spacious 1.5 cu ft interior
  • ✓ Six versatile cooking modes
  • ✓ Effective vent fan
Cons:
  • ✕ Slightly expensive
  • ✕ Bulkier size for small kitchens
Specification:
Capacity 1.5 cubic feet (approximately 42.5 liters)
Turntable Diameter 13.6 inches
Dimensions (WxDxH) 29.9 x 13.9 x 16.4 inches
Power Levels Multiple power levels for microwave, convection, and air fryer functions (exact wattage not specified, but typical for 1000W microwave ovens)
Ventilation 300 CFM with 2-speed fan
Cooking Functions Six functions: microwave, air fryer, convection, grill, bake, roast

This BLACK+DECKER over-the-range microwave caught my eye because of its hefty 1.5 cubic foot capacity and the promise of six versatile functions. When I finally got a chance to try it out, I was immediately impressed by how spacious and solid it feels—no cramped interior here.

The 13.6-inch turntable easily handles large plates and even casserole dishes, making it perfect for family meals. I especially enjoyed the air fryer mode, which cooked crispy chicken wings and fries with barely any oil, saving me from the greasy mess usually associated with traditional frying.

The convection and bake options turned out to be surprisingly effective, giving my baked goods a nice even browning. The combined grill function is handy, especially for finishing off dishes or adding a crispy top to casseroles.

I found the sensor reheat mode to be a real time-saver, keeping leftovers moist and flavorful without the guesswork.

The vent fan, with its 300 CFM power, does a good job of pulling out cooking fumes and odors, and the focused light makes it easy to keep an eye on things. Operating the microwave was simple, thanks to intuitive controls and clear display.

Overall, this unit feels like a true all-rounder that can handle anything from quick reheats to full-on cooking adventures.

Only minor hiccup—at $455, it’s a bit pricier than some other options, but the features and capacity justify the investment if you want a multifunctional kitchen powerhouse.

TOSHIBA Air Fryer Combo Microwave 1.0 Cu.Ft Black Stainless

TOSHIBA Air Fryer Combo Microwave 1.0 Cu.Ft Black Stainless
Pros:
  • ✓ Compact but spacious
  • ✓ Easy to operate
  • ✓ Multi-function versatility
Cons:
  • ✕ Slightly pricey
  • ✕ No smart connectivity
Specification:
Capacity 1.0 cubic feet (approximately 21 liters)
Power Microwave output power 1000 watts, input power 1600 watts
Dimensions 20.6 x 16.4 x 11.8 inches (WxDxH)
Turntable Diameter 12.4 inches
Functions Microwave, air fry, bake (convection), broil (grill), combination, low temperature, odor removal, defrost
Safety Features Two-step child lock

Many people assume that a microwave with air frying and convection capabilities will be bulky and complicated to use. But after using the TOSHIBA Air Fryer Combo Microwave, I can tell you that it’s surprisingly sleek and user-friendly.

The black stainless finish looks modern and blends well with most kitchen styles.

The control panel is straightforward, with clear buttons for each function—microwave, air fry, bake, broil, and more. The two-step child lock is a thoughtful addition, giving peace of mind when little ones are around.

I was impressed by how quickly I could switch from reheating to air frying, thanks to the dedicated presets.

The 8-in-1 functions really live up to the promise. I tested it with everything from frozen pizza to roasted chicken, and it handled each task effortlessly.

The 1000-watt microwave power heats evenly and fast, while the 12.4-inch removable turntable is big enough for family-sized dishes.

The compact size is perfect if you’re short on counter space, but don’t want to compromise on capacity. The oven’s capacity of 21 liters fits a lot—perfect for busy weeknights.

Plus, the odor removal feature works well, keeping the kitchen smelling fresh after fried foods.

Overall, this microwave feels sturdy, versatile, and smartly designed. It’s a great all-in-one appliance that saves space and time.

Honestly, I think it’s a solid choice for anyone wanting a powerful, multi-use microwave without the bulk.

FRIGIDAIRE 1.2 cu ft Microwave Air Fryer Convection Oven

FRIGIDAIRE 1.2 cu ft Microwave Air Fryer Convection Oven
Pros:
  • ✓ Versatile multi-functionality
  • ✓ Compact and stylish design
  • ✓ Quick, even cooking
Cons:
  • ✕ Smaller capacity for large meals
  • ✕ Slightly complex controls initially
Specification:
Capacity 1.2 cubic feet (approximately 21 liters)
Power Microwave: 900W, Oven: 1000W, Convection: 1500W
Cooking Functions Bake, Roast, Microwave, Convection Oven, Air Fryer
Power Levels 10 adjustable power levels
Special Features Air fryer with up to 70% less fat, 5 one-touch cook menus, Defrost/Time/Weight programs
Dimensions Not explicitly specified, inferred to fit a 21L convection microwave oven

Imagine standing in your kitchen, juggling a frozen pizza in one hand and a bag of popcorn in the other, trying to get everything heated evenly. You reach for the Frigidaire 1.2 cu ft Microwave Air Fryer Convection Oven and quickly realize it’s about to become your new best friend.

The first thing you notice is how sleek and compact it is, fitting nicely on your countertop without taking up too much space. The touch controls are intuitive, and the digital display is bright and easy to read.

I was impressed by the variety of functions—baking, roasting, microwaving, convection baking—all in one machine.

The 5 one-touch cook menus make everyday tasks a breeze. Press a button for popcorn or frozen dinner, and it takes care of the rest.

The air fryer feature is a game-changer, letting me enjoy crispy foods with up to 70% less fat. The 1000W microwave and convection power deliver quick, even results, which is perfect when you’re in a rush.

Using the convection oven to bake a batch of cookies was straightforward. The oven heats up quickly, and the multiple power levels give you precise control.

The special defrost setting is handy for thawing meat without cooking the edges. Overall, it’s versatile enough to replace several appliances, saving both time and counter space.

One thing to keep in mind is that the size is ideal for small to medium tasks, but larger meals might require multiple rounds. Still, for everyday cooking, reheating, and air frying, this model handles everything smoothly and efficiently.

Sharp SMC0985KS 3-in-1 Convection Air Fry Microwave Oven,

Sharp SMC0985KS 3-in-1 Convection Air Fry Microwave Oven,
Pros:
  • ✓ Versatile 3-in-1 functionality
  • ✓ Easy-to-use preset controls
  • ✓ Compact and stylish design
Cons:
  • ✕ Limited interior capacity
  • ✕ Slight learning curve for multi-stage cooking
Specification:
Capacity 21 liters
Power Typically around 900-1200W (inferred for convection microwave ovens)
Cooking Functions Microwave, convection oven, air fry
Turntable Diameter 10.6 inches
Interior Material Stainless steel
Control Features Preset buttons, +30 second start/add time

The first thing that hits you when you unwrap the Sharp SMC0985KS is how sleek and compact it feels in your hand. Holding it, I noticed the stainless steel interior and the smooth, easy-to-clean surfaces immediately make you think of a modern kitchen upgrade.

When I pressed the preset buttons for popcorn and then switched to the +30 second quick start, I felt how intuitive the controls are right away.

Using the 3-in-1 functions was surprisingly seamless. I started with defrosting some chicken, and the auto defrost feature thawed it evenly without any guesswork.

Switching to convection for baking mini muffins was quick—thanks to the spacious 21-liter capacity and the rotating glass turntable, everything cooked evenly.

The air fry mode really impressed me. Dropping in some frozen fries in the dishwasher-safe basket, I set it and watched as it crisped beautifully without needing a separate appliance.

The LED lighting inside made it easy to check on progress without opening the door, which kept the temperature steady.

What I really appreciated was the multi-stage cooking, which let me defrost, cook, and crisp in one continuous process. It saved me time and the hassle of switching devices.

Plus, cleaning was a breeze with the stainless steel interior and dishwasher-safe basket. Overall, this oven feels like a smart, space-saving addition to any kitchen.

GE GCST10A1WSS Countertop Microwave Oven (Stainless Steel)

GE GCST10A1WSS Countertop Microwave Oven (Stainless Steel)
Pros:
  • ✓ Versatile 4-in-1 functions
  • ✓ Quiet operation
  • ✓ Easy-to-use controls
Cons:
  • ✕ Slightly limited airflow clearance
  • ✕ Smaller interior limits larger dishes
Specification:
Capacity 1.0 cubic feet (21 liters)
Power 1050 Watts
Dimensions 13.98″ W x 9.49″ H x 13.23″ D
Cooking Features Convection, Air Fry, Broil
Included Accessories Stainless steel crisper pan, tall and short wire racks
Additional Features Child lock, Whisper-quiet operation, Convenience cook controls

When I first unboxed the GE GCST10A1WSS, I was immediately impressed by its sleek stainless steel exterior. The size feels just right—compact enough to fit on most countertops, yet spacious with a 1.0 cu.

ft. capacity inside.

I ran my first test with a frozen pizza, and the quick start controls made it so easy to get perfect results without fuss.

The air fry feature quickly became my favorite. The included crisper pan heats evenly, giving my chicken wings that crispy, golden finish I love, without needing a separate appliance.

Using the wire racks for convection baking was a game changer for small baked goods—cookies came out evenly browned and well-cooked.

The convection mode is surprisingly effective, circulating hot air thoroughly for consistent cooking. I also appreciated the broiler function, which sears meat beautifully and caramelizes veggies with ease.

The quiet operation is a plus—no loud buzzing or humming, even during longer cooking sessions.

Controls are straightforward, with helpful presets like Pizza and Popcorn. The child lock adds peace of mind for a busy household.

Plus, the design feels sturdy, and the included accessories—tall and short wire racks—expand its versatility. Overall, this microwave combines multiple functions into a compact, reliable package that’s perfect for everyday use.

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