Microwave to air fryer conversion
The honest answer: there’s no clean formula — microwaves work in watts, air fryers in temperature. Here’s what to actually set instead.
Air-fryer starting points for foods people microwave
| Food | Air fryer | Time | Note |
|---|---|---|---|
| Leftovers (general) | 350°F / 175°C | 3–5 min | to 165°F internal |
| Pizza slice | 350°F / 175°C | 3–4 min | crust re-crisps |
| Cooked fries / roast potatoes | 375–400°F / 190–205°C | 3–5 min | shake once |
| Fried chicken (cooked) | 350°F / 175°C | 4–6 min | to 165°F internal |
| Frozen snacks (spring rolls, mozzarella sticks) | 360–400°F / 180–205°C | 6–10 min | follow the package |
Starting points from common published air-fryer reheating guidance — every model differs, so check doneness. Leftovers should reach 165°F (74°C):FoodSafety.gov.
Why there’s no microwave-to-air-fryer formula
It’s tempting to want a tidy rule — “800 watts equals X degrees” — but it doesn’t exist, and any tool that gives you one is guessing. A microwave pumps electromagnetic energy that makes the water inside food vibrate and heat from within; its power is measured in watts. An air fryer surrounds food with fast-moving hot air at a temperature you set. Those are two different jobs, so watts simply don’t translate into °F or °C.
The good news is you rarely need a conversion. When a packet says “microwave on high for four minutes,” what you actually want is “cook this food in an air fryer” — and most foods have a well-known air-fryer temperature and time already. Reach for those instead of trying to translate the wattage. The table above covers the everyday cases; for anything with printed oven instructions, run those through theoven → air fryer converter for a precise number.
Reheating: where the air fryer wins
Reheating is the sweet spot. A microwave steams leftovers limp; an air fryer at around 350°F brings back crunch on pizza, fries, fried chicken and pastry while heating the middle through. It takes a few minutes longer, so stir or shake once and — for dense dishes — check that the centre reaches a safe 165°F. Frozen snacks designed to be microwaved, like spring rolls and mozzarella sticks, come out dramatically better from the air fryer; just follow the packet’s air-fryer setting if it has one.
Have oven instructions instead? Convert those
If your food came with oven directions, that’s the reliable path to an exact air-fryer setting. Drop the converter your temperature and time:
Start checking at ~18 min.
How we convert this
A starting point — air fryers run hot and every model differs. Check doneness by sight, and for meat use a thermometer and the USDA safe internal temperature.
Microwave to air fryer questions
What is the microwave to air fryer conversion?
There isn’t a real numeric one. A microwave heats by exciting water molecules and is rated in watts; an air fryer heats with hot moving air at a set temperature. Because they cook by different physics, there’s no honest formula that turns “800W for 4 minutes” into an air-fryer temperature. Instead, use a typical air-fryer temperature and time for the specific food and check it.
Can I air fry something the packet says to microwave?
Often, yes — and it usually tastes better, because the air fryer crisps where the microwave steams. Ignore the microwave wattage and instructions; treat it as “cook this food in an air fryer” and use the food’s normal air-fryer temperature and time (see the guide above), or the packet’s oven instructions run through the oven → air fryer converter.
Is the air fryer slower than the microwave?
A little, yes. A microwave reheats a plate in 1–2 minutes; an air fryer usually takes 3–6. You trade those extra minutes for crispness and even heating instead of a soggy, unevenly-hot result — worth it for anything that was once crunchy.
How do I reheat leftovers safely in an air fryer?
Reheat at around 350°F (175°C) until the food is hot all the way through — the USDA says leftovers should reach 165°F (74°C) internally. Stir or shake once so the middle catches up with the edges, and check with a thermometer for dense items like casseroles.
What about frozen snacks — mozzarella sticks, spring rolls?
These are made to cook from frozen, so follow the packet’s air-fryer instructions if given; otherwise start around 360–400°F for 6–10 minutes, shaking halfway. They’re a classic air-fryer win — far crisper than the microwave and barely slower.