To convert an oven temperature to an air fryer in Fahrenheit, subtract 25°F (15°C) and reduce the cooking time by 20%. A 400°F oven recipe becomes 375°F in the air fryer, and a 30-minute bake becomes 24 minutes.
One number in, one number out — for when you already know the cooking time
Oven to Air Fryer Chart in Fahrenheit
| Oven | Air fryer | Convection oven | Air fryer (from convection) |
|---|---|---|---|
| 250°F | 225°F | 250°F | 240°F |
| 275°F | 250°F | 275°F | 265°F |
| 300°F | 275°F | 300°F | 290°F |
| 325°F | 300°F | 325°F | 315°F |
| 350°F | 325°F | 350°F | 340°F |
| 375°F | 350°F | 375°F | 365°F |
| 400°F | 375°F | 400°F | 390°F |
| 425°F | 400°F | 425°F | 415°F |
| 450°F | 425°F | 450°F | 440°F |
What is the Time conversion chart?
| Oven time | Air fryer time |
|---|---|
| 10 min | 8 min |
| 15 min | 12 min |
| 20 min | 16 min |
| 25 min | 20 min |
| 30 min | 24 min |
| 35 min | 28 min |
| 40 min | 32 min |
| 45 min | 36 min |
| 50 min | 40 min |
| 60 min | 48 min |
Temperature and time convert independently. Read your temperature from the first chart and your time from the second — a recipe calling for 425°F for 45 minutes becomes 400°F for 36 minutes.
The reduction exists because an air fryer drives air across the food at high velocity, stripping away the still, cool boundary layer that insulates food in a conventional oven. Heat reaches the surface faster, so the same dial setting cooks harder. Subtracting 25°F (15°C) brings the effective heat back in line.
Why 25°F (15°C) specifically?
It is the long-established reduction from conventional to convection cooking, and air fryers inherit it because they are high-velocity convection ovens. The figure holds well across the 300–450°F range, where nearly all air fryer cooking happens.
Does the 25°F (15°C) reduction work at low temperatures?
Less reliably below about 300°F. At low temperatures the surface effect that the reduction compensates for is weaker, and a full 25°F (15°C) drop can leave food underdone. For slow cooks and dehydrating, reduce by 15°F (8°C) instead and check at the original time.
What if my air fryer only goes up to 400°F?
Most cap there, which is fine — 400°F in an air fryer corresponds to a 425°F oven. Only recipes calling for 450°F or above cannot be converted directly. For those, use 400°F and add 10–15% to the converted time.
Do the numbers change for an air fryer oven?
The temperature conversion is identical. Air fryer ovens hold more, so a quantity that would need two basket batches often fits in one. Capacity is the variable, not temperature.
Related conversions and adjacent topics
Fan ovens and conventional ovens take different reductions, because a fan figure has already been adjusted once. The fan oven conversion covers that distinction, which is the most common source of undercooked results in UK kitchens.
The UK oven to air fryer converter works in Celsius throughout and defaults to fan oven, so no cross-system rounding is involved.
Frequently asked questions
What is 350°F in an air fryer?
325°F, with the time reduced by 20%. A 25-minute bake becomes 20 minutes.
What is 400°F oven in an air fryer?
375°F. This is the most common conversion, covering fries, wings and most frozen foods.
What is 425°F in an air fryer?
400°F, which is the maximum on most consumer units.
Do I use the same chart for frozen food?
Yes, but package instructions usually list air fryer settings directly — use those first. Convert only when the package gives oven instructions alone.
Where is the Celsius version?
On the Celsius chart page. Work in the unit your recipe uses rather than converting between systems, which introduces rounding drift.