How to Use the Converter Above
The microwave is fast, but it has one big weakness: it turns crispy food soft. Leftover fries come out limp, pizza goes rubbery, fried chicken loses its crunch. The air fryer fixes that — it reheats with hot, dry air that brings back the texture you started with. The converter above tells you the air fryer time and temperature to use, based on what you’re reheating. Here’s how to get the most out of it.
The quick version
An air fryer takes longer than a microwave but gives a far better result for anything that’s meant to be crispy. As a rough idea, it needs about three to five times the microwave time, at a temperature that depends on the food. The tool works that out for you and gives you a sensible range.
Step by step
1. Pick your direction. Most of the time you’ll want Microwave → Air Fryer — you know the quick microwave time, but you want the better air fryer result. If you’re in a rush and want to go the other way, flip to Air Fryer → Microwave.
2. Choose what you’re reheating. This is the most important step here, because the right temperature depends on the food. Crispy things (fries, fried chicken, pizza) want a higher temperature; delicate things (fish, pastry) want a lower one; thick or frozen items need a gentler heat so the middle warms before the outside burns.
3. Enter your time. Type in the microwave time you’d normally use, or use the quick-set buttons. (In the reverse direction you enter the air fryer time instead, and you’ll also pick your microwave’s wattage — the tool switches the labels for you.)
4. Read your result. You’ll get the air fryer temperature and a time range. Check the food and shake or flip it halfway through.
A few things worth knowing
No preheating needed. Air fryers are small with the heating element close to the food, so they get hot in seconds. For reheating, you can skip preheating and just start.
Reheat in a single layer. Piling food up traps steam between the pieces and gives you the same soggy result you were trying to avoid. Spread it out so the air can move around it.
Some foods belong in the microwave — and the tool will tell you. Soups, stews, saucy dishes, plain rice, and scrambled eggs don’t work in an air fryer. Liquids can’t go in the basket, and dry items just dry out more. If you pick one of these, the tool won’t give you a number — it’ll tell you to use a microwave or stovetop instead. That’s on purpose.
Going back to the microwave? Pick your wattage. In the reverse direction, your microwave’s power matters a lot — a 700-watt model takes around 40% longer than a 1000-watt one for the same food. Pick your wattage (it’s on the label inside the door or on the back) and you’ll get a closer time. Just know you’ll trade away the crispness for speed.
Why you can trust the numbers
Straight up: I’m a developer, not a chef. So I didn’t guess these. I’ll be honest about this tool in particular — a microwave and an air fryer don’t share one clean formula, because they heat food in completely different ways. So rather than invent a fake-precise number, I built this around reheating leftovers, using published reheating guides that agree on the rough three-to-five-times rule and the food-specific temperatures. I list those sources on the How We Calculate page.
And the safety bit matters here: reheated leftovers should reach 165°F (74°C). A hot surface and some steam don’t prove the middle is hot — use a thermometer to be sure, especially with meat.
Your turn
Give it a go with whatever’s in your fridge and see how it turns out. What did you reheat? Did it come out crispy again? Leave a comment below — your results genuinely help other people rescue their leftovers, and they help me improve the tool. And if something didn’t reheat the way you expected, tell me what it was and I’ll look into it.
