Convert an oven recipe for your air fryer — or back again — using your brand’s own published rule. Nine brands’ rules, every manual linked.
Updated · How we source our numbers
Brands publish different rules. Ninja US says 25 °F lower (UK and Australia 10 °C); Instant says 20 °C lower and 20–25% less time. Cosori says 25–50 °F lower and 20% less time. Most brands publish no rule — check food early.
There is no government or industry standard for converting oven recipes to an air fryer. We checked official manuals and brand websites for more than 35 brands sold in the US, UK, Canada and Australia (30 October 2026). Nine rules exist — and they don’t agree:
| Brand | Temperature | Time | Applies to | Where it says so |
|---|---|---|---|---|
| Ninja (US) | 25 °F lower | No rule — “check food frequently” | Oven recipes | AF100, Max XL guides |
| Ninja (UK, Australia) | 10 °C lower | No rule | Oven recipes | AF300UK, AF300ANZ manuals |
| Ninja Foodi air fry oven | 25 °F lower | 30% less | Oven recipes, Air Roast | Ninja Canada guide |
| Instant (Vortex) | 20 °C lower (fresh); same (frozen) | 20–25% less (fresh); 50% less (frozen) | Fresh and frozen food | Instant UK, Instant AU (credited to Jenny Tschiesche) |
| Cosori | 25–50 °F lower | 20% less | Oven recipes | Dual Basket 9-qt, 26-qt oven guides |
| Cuisinart (basket) | 25–50 °F lower | No rule — check 5–10 min early | Recipes not written for it | AIR-200C, AFR-25 booklets |
| Kalorik | 10–25 °F lower | 5–10 min faster | Baked foods, first time | AFO 46045 booklet |
| Bella | 50 °F lower | 30–50% less | Pre-packaged foods | 14538 manual |
| Philips | 70 °F lower | Half | Pre-made packaged foods only | US recipe book; no rule in its manuals |
No published rule: these brands give no figure for converting oven recipes.
Hamilton Beach and Oster give rules only for their ovens’ convection setting, not air frying.
Two notes on the numbers. Cosori’s documents don’t fully agree, so we show the manuals’ range:
Cuisinart’s AIR-200C booklet prints “[-3.8°C to 10°C]” beside 25–50 °F; as a temperature difference that is really about 14–28 °C, which is what the calculator uses. Converting from air fryer back to oven runs each rule backwards — that part is our arithmetic.
Time rules exist for only some brands, and only for their own machines. Whatever the brand, start checking early: basket size and how full it is change everything. For meat and poultry, cook to a safe internal temperature — see the roasting calculator for USDA’s minimums. Baking in a fan or convection oven instead? Use the oven temperature converter.