Estimate starting air-fryer settings for an oven recipe in Fahrenheit or Celsius. The calculation exposes its temperature and time reductions so you can adjust them to your appliance instead of relying on an unexplained cooking-time prediction.
How to use the estimate
Choose the recipe's temperature unit, enter its oven temperature, and split the cooking time into hours and additional minutes. Select Conventional oven for the standard starting rule. Indicate whether food is arranged in one layer so the result can flag a crowded load.
For an already fan/convection-adjusted recipe, enable Use custom adjustments and open the custom settings. Enter the reductions supplied by your appliance guidance or tested recipe. Custom reductions start at zero, leaving the recipe unchanged until you enter your own adjustments. Do not apply a conventional-to-convection correction twice.
The rule and its limits
For conventional recipes, this tool uses the general starting guideline described by KitchenAid: lower temperature by 25°F and shorten time by 20%. A temperature difference converts without adding or subtracting 32, so the equivalent reduction is 13.8889°C.
The estimate does not model food thickness, basket load, frozen state, preheating, appliance power, or a manufacturer's maximum temperature. Use the closest supported setting on the appliance and start checking before the estimated finish. Prefer specific air-fryer instructions when the food packaging provides them.
Examples
A conventional recipe at 400°F
An oven recipe calling for 400°F for 30 minutes gives a starting estimate of 375°F for 24 minutes. The modeled time reduction is six minutes. This is a planning estimate, not confirmation of doneness.
A custom adjustment in Celsius
If appliance guidance calls for reducing a 200°C, 40-minute recipe by 10°C and 15%, enter those custom reductions. The calculation gives 190°C for 34 minutes.
Formula
Air-fryer starting temperature = oven temperature − temperature reduction
Estimated time = oven time × (1 − time reduction / 100)
Temperature difference in °C = temperature difference in °F × 5/9
The default rule uses 25°F (125/9°C) and 20%. Custom reductions are shown in the result explanation. Preheating is not included in the calculated cooking time.
Check the food, not just the timer
Allow air circulation and avoid assuming that a larger load cooks in the same time. Turning or shaking may be needed according to the recipe. For meat and poultry, use a food thermometer; surface color and elapsed time are not reliable substitutes.
The USDA safe minimum internal-temperature chart lists food-specific targets and rest requirements. For example, poultry requires 165°F (73.9°C) internally. This is the food's internal temperature, not the air-fryer setting.