Oven 425°F · 220°C

425°F in the oven is 400°F in an air fryer

425°F in a conventional oven is about 400°F in an air fryer — reduce the temperature by 25°F and the time by roughly 20%. A 30-minute oven bake at 425°F becomes 23 to 26 minutes at 400°F, checked at 18 minutes. In Celsius that is 220°C down to 205°C.

425°F oven → air fryer
°F
min
Your air fryer

Roughly 5–6 qt / 5–6 L. The shape the conversion rule assumes.

Set air fryer to
375°F
Cook for
23–26 min

Set air fryer to 375 degrees Fahrenheit, cook for 23 to 26 minutes.

Check at 18 min and shake the basket. The USDA puts it plainly: cook times vary with the size and power of the machine, but the safe internal temperature never does.

How long, for a 425°F recipe

Oven time on the left, air fryer time on the right. The three columns are basket sizes — a small basket runs ahead of the rule, a large oven-style unit runs behind it. Check at the earliest figure in your column.

Oven time Small basket Standard basket Oven-style or dual
15 min 11–12 min · check 8 11–13 min · check 9 12–14 min · check 10
20 min 14–16 min · check 11 15–17 min · check 12 16–18 min · check 13
25 min 18–20 min · check 14 19–21 min · check 15 20–23 min · check 16
30 min 21–24 min · check 17 23–26 min · check 18 24–28 min · check 20
40 min 28–32 min · check 22 30–34 min · check 24 32–37 min · check 26
45 min 31–36 min · check 25 34–38 min · check 27 36–41 min · check 29
60 min 42–48 min · check 33 45–51 min · check 36 48–55 min · check 39

What to watch at 425°F

High-heat roasting territory: this is where vegetables actually brown rather than dehydrate. Cosori puts broccoli and carrots at 425°F and brussels sprouts at 415°F, so for vegetables the honest advice is often to ignore the conversion entirely and cook them at the temperature the manufacturer chart already gives.

Overcrowding the appliance can prevent enough air circulation to properly cook the food. — USDA Food Safety and Inspection Service.

Foods cooked near 400°F

These have their own sourced times, which beat any conversion. 56 foods are indexed in total.

Chicken Wings 400°F · 20–25 min · 165°F internal Raw Frozen Breaded Fish Fillets 400°F · 8–16 min · 145°F internal Frozen Frozen Spring Rolls 400°F · 6–10 min Frozen Frozen Tater Tots 400°F · 16–24 min Frozen Bone-In Chicken Breast 395°F · 24–34 min · 165°F internal Raw Chicken Drumsticks 395°F · 18–24 min · 165°F internal Raw

Browse every cook time

Other temperatures

300°F 325°F 350°F 375°F 400°F 450°F

Sources for the rule itself, including why it is a range rather than a single figure, are on the converter page. In short: no manufacturer or food agency publishes a conversion formula, and the most authoritative statement of it — University of Illinois Extension — says “reduce temperature by 25 to 30°F and reduce cooking time by 20%”.