Oven to air fryer: a starting conversion, not a promise
Two manufacturer manuals, Cosori’s recipe book and Dreo’s quick-start, give the same starting rule: reduce the oven temperature by 25 F and the cooking time by 20 percent. Both say results vary. USDA treats an air fryer as a small, intense oven: the safe internal temperature does not change, and an overcrowded basket can leave food undercooked.
Updated .
Safe temperatures for a whole turkey, beef roast, and ham do not change in an air fryer. Scale a written recipe with the recipe scaler.
At a glance
| Topic | Starting rule |
|---|---|
| Temperature | Minus 25 F from the oven setting |
| Time | Minus 20 percent, then check early |
| Safe internal temperature | Unchanged from USDA charts |
| Source of the conversion | Manufacturer manuals, not a USDA formula |
Two manufacturer manuals (Cosori’s recipe book and Dreo’s quick-start) give the same starting rule: reduce the oven temperature by 25 F and the cooking time by 20 percent. Both say results vary. USDA treats an air fryer as a small, intense oven: the safe internal temperature does not change, and an overcrowded basket can leave food undercooked.
Conversion calculator
If the original recipe is already written for a convection or fan oven, start with the same method but look even earlier. We do not invent a second official percentage for convection recipes.
Sources
Common questions
How do you convert an oven recipe to an air fryer?
A common manufacturer starting point is minus 25 F and minus 20 percent of the oven time. Check early with a thermometer. Results vary by basket and food.
Does the safe internal temperature change in an air fryer?
No. USDA says the safe internal temperature does not change. An overcrowded basket can leave food undercooked.
What if the recipe is already written for a convection oven?
Start with the same minus 25 F and minus 20 percent method, but look even earlier. This site does not invent a second official percentage for convection recipes.
Is this conversion an official USDA formula?
No. The time and temperature reduction comes from manufacturer manuals. USDA’s role here is the unchanged safe temperature and a warning about overcrowding.