Comparison · appliance vs appliance
Air fryer vs microwave
These two appliances solve different problems and the honest answer isn't "which is better" — it's "which one for which job." The microwave is the fastest reheat in the kitchen. The air fryer is the fastest crisp. Below: six axes that decide which one each cook belongs in, plus the leftover-by-leftover guide for when to reach for one over the other.
Different jobs, different physics
A microwave heats food by exciting the water molecules inside it with 2.45 GHz radiation. Heat radiates outward from the wet parts of the food first, which is why a microwaved plate gets hot in the middle while the rim stays cool, and why microwaved bread turns soft and rubbery — the steam released from the interior wets the crust on its way out. The air fryer does the opposite. It blows very hot dry air across the surface of the food, driving moisture out and triggering Maillard browning above 280 °F. The crust gets crispier, not softer.
That physical difference is why pizza slices reheat soggy in the microwave and crisp in the air fryer, why scrambled eggs work in the microwave but not the air fryer, and why a mug of coffee doesn't belong anywhere near an air fryer. Don't pick a winner across the board — pick the right tool per task.
Side by side on six common tasks
Reheating a plate of leftovers in under 2 min
Microwave- Air fryer
- 5–8 min including a 2–3 min preheat — too slow for a quick warm-up
- Microwave
- 60–90 s for a single plate from fridge to hot — the fastest tool in the kitchen
Restoring crisp surfaces (pizza, fried food, breaded leftovers)
Air fryer- Air fryer
- Dry hot air revives a crisp crust in 3–5 min at 350 °F
- Microwave
- Steams the crust soggy because microwaves heat water inside the food
Cooking raw protein from scratch
Air fryer- Air fryer
- Roasts, crisps and browns — chicken breast in 18 min, salmon in 10
- Microwave
- Cooks proteins poorly — no Maillard browning, rubbery texture, uneven heat
Heating a mug of coffee, melting butter, softening cream cheese
Microwave- Air fryer
- Not built for liquids — no spot-heating, no precise low-power mode
- Microwave
- Designed for it — 30–60 s with stir-mid options
Frozen ready-meal that's mostly steamed (rice bowls, soups, frozen veg)
Microwave- Air fryer
- Slower and overkill — dry heat dries out wet ready-meals
- Microwave
- 3–5 min with the lid vented — wet meals stay wet, which is the point
Frozen breaded items (fries, nuggets, mozzarella sticks, fish sticks)
Air fryer- Air fryer
- 12–15 min and the coating crisps the way the package picture promised
- Microwave
- 5–7 min but the coating turns to wet bread — defeats the purpose
Foods the air fryer cooks the microwave can't touch
Anywhere texture matters — anywhere you need a crisp surface, a browned crust, or rendered fat. The microwave heats but it doesn't crisp. For these four, the air fryer is the only kitchen tool short of a full oven that gets the job done.
Frozen french fries
Microwaved fries come out limp and soggy because the moisture inside vapourises and condenses on the coating. The air fryer drives that moisture off in 13 min and the coating crisps the way it was engineered to.
Open the cook page →Chicken wings
Microwaved wings produce rubbery skin and uneven internal temperature. Air-fried wings render fat under the skin while crisping the surface — the only way a home kitchen reproduces sports-bar texture.
Open the cook page →Bacon
Microwave bacon works but renders fat unevenly and the rashers either burn or stay floppy. Air-fried bacon crisps evenly on every face because the fat drips to the drawer below instead of pooling under the meat.
Open the cook page →Salmon fillet
Microwaving fish overcooks the outside before the centre warms through and the texture goes from flaky to mealy. The air fryer at 380 °F leaves the skin crisp and the centre at 125–130 °F medium-rare in 10 min.
Open the cook page →
When the microwave is the right tool
Wet, fast, and forgiving. Anywhere you need raw speed without caring about crispness — and anywhere the food is sauce-based, liquid, or designed to stay moist — the microwave is faster and cleaner than the air fryer and gives a better result.
Reheating a plate of dinner leftovers — pasta, stew, rice bowl, casserole
Anything sauce-based or wet — chili, soup, curry, mac and cheese, rice and stir-fry leftovers — reheats best in the microwave in 90 s. The air fryer takes 5–8 min for the same task and dries out the sauce. Microwave is the right tool here.
Heating liquids — coffee, tea, milk, hot chocolate, soup, broth
The air fryer literally cannot heat a mug of coffee without baking it dry. The microwave does it in 30–60 s with the precise low-power options the air fryer doesn't have.
Melting butter, softening cream cheese, blooming spices in fat
Anything that needs gentle, controllable, low-temperature heat. The microwave's low-power mode (30–50 %) lets you melt without scorching. The air fryer has no equivalent — its minimum useful temperature is around 250 °F.
Steaming or par-cooking vegetables before they go in another dish
Frozen peas, frozen corn, broccoli florets for a stir-fry, potatoes pre-softened before roasting — the microwave with a splash of water and a vented lid handles this in 3–5 min. The air fryer is dry heat; it can't steam.
FAQ about air fryer vs microwave
- Which is better, an air fryer or a microwave?
- Wrong question — they solve different problems. The microwave is the fastest reheat in the kitchen for wet, sauce-based, or liquid food (90 s for a plate of leftovers, 60 s for a mug of coffee, 30 s for melting butter) and the only practical tool for heating beverages. The air fryer is the fastest crisp in the kitchen for dry, breaded, or naturally-crisp food (5 min to revive yesterday's pizza, 13 min for frozen french fries, 18 min for a chicken breast). Most kitchens that own both use the microwave 70 % of the time and the air fryer 30 % — they're complementary, not competing, and the right answer is to own both.
- Can the air fryer replace my microwave?
- No, and it's not close. The air fryer cannot heat a mug of coffee, melt butter without scorching, soften cream cheese, gently warm milk for hot chocolate, or reheat a bowl of soup in under a minute. It can't reheat anything sauce-based without drying it out, and it takes 5–8 min including preheat for a single plate of leftovers vs the microwave's 90 s. The air fryer replaces some of what an oven does, not what a microwave does. A kitchen that keeps the air fryer and gives up the microwave usually adds the microwave back within months.
- Which leftovers reheat better in the air fryer vs the microwave?
- Rule of thumb: dry-crisp food in the air fryer, wet-saucy food in the microwave. Air fryer (3–5 min at 350 °F) is right for pizza, fried chicken, french fries, breaded items (mozzarella sticks, fish sticks, chicken nuggets), egg rolls, samosas, pot stickers, rotisserie chicken skin, and anything you want crispy. Microwave (60–90 s) is right for pasta, rice, soup, stew, curry, chili, mac and cheese, casseroles, steamed vegetables, and anything with a sauce or liquid component. Mixed plates (rice + crispy meat) split it — microwave the rice in 60 s while the chicken crisps in the air fryer for 3 min, then combine.
- Why is microwaved pizza soggy but air-fried pizza crisp?
- Because the two appliances do opposite things to moisture. A microwave heats food by exciting water molecules — it pulls heat from the wet interior outward, and as that water turns to steam it has to escape through the crust on its way out, soaking the crust as it goes. The crust gets softer the longer it heats. An air fryer does the opposite — it blows very hot dry air across the crust, evaporating moisture off the surface and triggering Maillard browning when the crust hits 280 °F. Same slice of pizza, opposite outcome. The rule applies to anything with a crisp surface: fried chicken, breaded items, pastries, fries, samosas. Always air fryer, never microwave, if the texture matters.
- Is an air fryer faster than a microwave?
- Not for reheating — the microwave is meaningfully faster on every reheat task. A plate of leftovers reheats in 90 s in the microwave vs 5–8 min in the air fryer (including the 2–3 min preheat). A mug of coffee: 60 s vs literally never (the air fryer isn't built for liquids). A frozen ready-meal: 5 min vs 12 min. The air fryer's speed advantage is over the oven, not the microwave. The reason to use the air fryer for a reheat isn't speed — it's surface texture. If you don't care about crispness, the microwave wins every reheat comparison by 3–5×.
- Does the air fryer use more electricity than the microwave?
- Yes, but per cook, not per hour. A typical microwave at 1 000 W running for 90 s uses about 0.025 kWh — roughly $0.004 at $0.16/kWh, essentially free. A typical air fryer at 1 800 W running for 20 min uses about 0.6 kWh — roughly $0.10. The air fryer is 25× more expensive per cook in pure electricity terms. For pure reheating, where both could do the job, the microwave is dramatically cheaper. The trade-off is the texture — the air fryer's $0.10 buys you crisp food and the microwave's $0.004 buys you soggy food. For dinner leftovers that don't need crispness, the cost calculation makes the microwave the rational choice.