Converting oven recipes to an air fryer
An air fryer is really a small, fast convection oven — it blows hot air around the food, so it cooks quicker and browns harder than a regular oven. Converting a recipe is mostly two adjustments: turn the temperature down a little, and the time down more.
The rule of thumb
- Temperature: set the air fryer about 25°F (roughly 15–20°C) lower than the oven calls for.
- Time: cut the cook time by about 20% as a starting point.
- Check early: look a few minutes before the reduced time is up — air fryers run hot and vary a lot by model.
So a tray of something at 400°F for 20 min in the oven becomes roughly
375°F for ~16 min in the air fryer — then you check.
The reason both numbers move is that an air fryer is a convection oven in a much smaller chamber. The fan blows hot air over every surface continuously, so heat transfer is faster and more even than a traditional oven where air barely moves. The same food browns more aggressively, which means you need a lower set temperature to hit the same internal result without over-browning the outside. The shorter time follows from the same logic: the food is simply done sooner.
Worked example: roasted chicken thighs
The oven recipe says: 400°F (205°C) for 35 minutes, bone-in skin-on chicken thighs. Here is how to convert it step by step.
- Lower the temperature by 25°F: 400 − 25 = 375°F (190°C).
- Cut the time by 20%: 35 × 0.80 = 28 minutes. Round down to 26–28 and plan to check.
- Set up the basket: arrange thighs skin-side down in a single layer. Do not stack or overlap.
- Flip at the halfway mark: at about 13 minutes, flip skin-side up so it can crisp for the second half.
- Check at 24 minutes: the skin should be deeply golden. Use a thermometer — chicken thighs are done at an internal temperature of 165°F (74°C). If not there yet, add 2–3 minutes and check again.
In practice, bone-in thighs often finish in 24–28 minutes in the air fryer versus 35 minutes in the oven, and the skin comes out noticeably crispier because the fan strips away steam that would otherwise soften it.
Quick conversion reference by food type
| Food | Typical oven setting | Air fryer setting | Notes |
|---|---|---|---|
| Chicken thighs (bone-in) | 400°F / 35 min | 375°F / 24–28 min | Check internal temp (165°F) |
| Chicken breast (boneless) | 375°F / 25 min | 350°F / 18–20 min | Flips well at halfway |
| Frozen french fries | 425°F / 25 min | 400°F / 15–18 min | Shake halfway; no oil needed |
| Brussels sprouts | 400°F / 25 min | 375°F / 14–16 min | Small batches only; shake once |
| Salmon fillet (1 inch) | 400°F / 12 min | 375°F / 8–10 min | Do not flip; check at 8 min |
| Breaded fish or chicken | 400°F / 20 min | 375°F / 12–14 min | Spray lightly with oil for best crust |
| Reheating pizza | 375°F / 10 min | 325°F / 4–5 min | Crust crisps up much better than microwave |
| Cookies (baked from dough) | 350°F / 12 min | 325°F / 7–9 min | Small batches only; watch closely |
What converts well and what doesn't
Foods that convert well
- Roasted or baked proteins (chicken pieces, salmon, shrimp, pork tenderloin) — the air circulation produces better browning than a standard oven.
- Vegetables and fries — roast faster, edges char more evenly, less oil needed because the air does the work.
- Breaded and frozen foods — these were practically designed for the air fryer; they come out crispier than in a conventional oven.
- Reheating anything fried or roasted — the air fryer revives texture that a microwave destroys.
Foods that are tricky or don't convert
- Wet batters (tempura, beer batter, thin crepe batter) — the fan blows the batter off the food before it can set. Use a dry breadcrumb coating instead.
- Large roasts — a whole chicken or a pork shoulder won't fit properly and won't cook evenly. Air fryers work best for pieces, not whole large cuts.
- Delicate baked goods (soufflés, chiffon cakes, thin muffins) — the blowing air disturbs structure that needs to rise undisturbed. A conventional oven is better here.
- Anything heavily liquid (soups, stews, sauced dishes) — a basket air fryer isn't a sealed cooking vessel. Covered, liquid-based dishes need an oven or stovetop.
What to watch
- Single layer, no crowding: the moving air needs to reach every surface. Pile food up and it steams instead of crisping. Cook in batches if needed.
- Shake or flip partway through for even browning.
- A little oil on fresh foods helps them crisp; very lean items can dry out.
- Preheat your air fryer for 3–5 minutes if your model recommends it — some run hotter from cold start, others take a moment to reach full temperature.
Common mistakes
- Keeping the same oven temperature. The convection effect means you will over-brown the outside before the inside is done. Always drop at least 25°F/15°C.
- Not checking early enough. Many people set the reduced time and walk away. The 20% reduction is an average — dense pieces may need a little more, thin fillets may be done 30% faster. Check at 75% of your estimated time.
- Crowding the basket. Overlapping food traps steam and prevents crisping. The whole point of the air fryer is circulating air contact — block that and you lose the benefit. Two batches with great results beat one batch that's soggy in the middle.
- Using the same time for a larger quantity. More food in the basket absorbs heat and can extend cooking time slightly, even in a single layer. Add 2–3 minutes when cooking a full basket versus a half basket and verify with a thermometer.
Skip the guesswork and use the Air Fryer Converter to calculate the adjusted temperature and time for any oven recipe automatically.