400°F Oven to Air Fryer – Temperature & Time
400 °F oven = 375 °F air fryer
Cook a 400 °F (204 °C) oven recipe at 375 °F (191 °C) in an air fryer, for about 80% of the oven time.
Step by step
- Subtract 25 °F from the oven temperature: 400 − 25 = 375 °F.
- Multiply the oven time by 0.8 (about 20% less).
- Check and shake or flip the food halfway through.
Examples at 400 °F — Roast potatoes: 30 min in the oven → about 24 min at 375 °F in the air fryer; Chicken thighs: 30 min in the oven → about 24 min at 375 °F in the air fryer; Brussels sprouts: 20 min in the oven → about 16 min at 375 °F in the air fryer; Frozen fries: 20 min in the oven → about 16 min at 375 °F in the air fryer.
Details
- Air fryer temperature
- 375 °F (191 °C)
- Oven in Celsius
- 204 °C
- Fan oven equivalent
- 375 °F
- 30 min oven recipe
- about 24 min in the air fryer
- Gas mark (oven)
- 6
How it works
An air fryer is a compact convection oven: a powerful fan circulates hot air close to the food, so it browns and cooks faster than a conventional oven. Lowering the temperature by 25 °F keeps the outside from over-browning before the inside is done, and cutting the time by about a fifth accounts for the faster heat transfer. Cook in a single layer and rely on a thermometer for meat.
Nearby values
| Oven | Air fryer |
|---|---|
| 300 °F oven | 275 °F air fryer |
| 325 °F oven | 300 °F air fryer |
| 350 °F oven | 325 °F air fryer |
| 375 °F oven | 350 °F air fryer |
| 400 °F oven | 375 °F air fryer |
| 425 °F oven | 400 °F air fryer |
| 450 °F oven | 425 °F air fryer |
| 475 °F oven | 450 °F air fryer |
| 500 °F oven | 475 °F air fryer |
Related conversions
Frequently asked questions
What is 400 °F in an air fryer?
375 °F (191 °C), for about 20% less time.
How long do I air fry something that bakes 20 minutes at 400 °F?
About 16 minutes — check at 8 minutes.
What is 400 °F in Celsius?
204 °C.
Do I need to adjust oven recipes for an air fryer?
Yes — lower the temperature by about 25 °F and shorten the time by about 20%.