400°F for 25 minutes
Oven 400°F for 25 minutes.
Air fryer 375°F for 20 minutes. Start checking at 17.
Oven to air fryer calculator
Type the oven temperature and the minutes. Pick the food. Frozen, a fan oven, or a full basket changes the number. The result includes the minute to start checking.
°F
min
Air fryer temperature
375°F
20 minutes. Start checking at 17.
- Time
- 20 min
- Check at
- 17 min
- Shake or turn
- 10 min
Oven25 min
Air fryer20 min
This food drops 25°F and the time is cut by about 20%.
Heat the empty basket for 3 minutes before the food goes in.
Next: Percentage calculatorThe time cut, written as a percent.
A starting point, not a reading from your model. Frozen food, a fan oven, and a full basket each change the number. The result rounds to the nearest 5 degrees.
Keep it simple
Six things that matter more than a more precise number.
1
Look early
Use the check time, not the end of the timer. You can always add a few minutes. You cannot uncook it.
2
One layer
A piled basket steams. Switch on Basket is full, or cook a second batch. Do not stack and hope.
3
Heat the empty basket
Three minutes before the food goes in. A cold basket runs long, and the number on this page assumes it was hot.
4
Open it once
Shake or turn at the minute the result gives. Opening the basket every couple of minutes lets the heat out.
5
Trust a printed air fryer time
If the bag already says what to do in an air fryer, use that. This page is for an oven instruction.
6
A teaspoon of oil
Toss vegetables or potatoes with a teaspoon. A puddle of oil smokes and does not crisp them faster.
How this is calculated
A fixed temperature drop and a shorter time
air fryer °F = oven °F − drop; minutes = oven minutes × factor
| drop | 25°F for most foods and vegetables, 20°F for meat, 10°F for cakes and bread. |
|---|---|
| factor | 0.80 for most foods and meat, 0.75 for vegetables, 0.90 for cakes and bread. |
Both units use the Fahrenheit drop, then the result is converted and rounded to the nearest 5°. A Celsius-only chart that always subtracts 20°C will disagree by a few degrees.
Vegetables brown faster, so the time cut is a quarter rather than a fifth. Cakes and bread need the gentler drop or the crumb collapses.
The other direction adds the drop back and divides by the same factor. Rounding to 5° means the trip is not always exact.
Frozen food keeps the oven temperature and uses 70% of the time. A fan oven takes half the usual drop, because that recipe was already written for moving air. A full basket adds about 15% to the time.
The time cut is an ordinary percent decrease. The percentage calculator shows that cut on any number.
Worked examples
Loading an example fills the tool and scrolls you back to the result. Money examples stay in US dollars on the page. The symbol you picked changes; the numbers do not convert.
200°C of vegetables for 30 minutes
Oven 200°C for 30 minutes.
Air fryer 185°C for 23 minutes. Start checking at 20.
A 350°F cake for 40 minutes
Oven 350°F for 40 minutes.
Air fryer 340°F for 36 minutes. Start checking at 31.
Frozen fries, 425°F for 20 minutes
Oven 425°F for 20 minutes.
Air fryer 425°F for 14 minutes. Start checking at 10.
An air fryer recipe, back to the oven
Air fryer 375°F for 20 minutes.
Oven 400°F for 25 minutes. Start checking at 21.
Embed this calculator
Paste this on a page you control. The frame shows the tool only. The formula stays on this page, and the frame links back here.
<iframe src="/embed/air-fryer" title="Air fryer calculator" width="100%" height="720" style="border:0;max-width:42rem" loading="lazy"></iframe>Questions
Why not just cut every recipe by 20%?
A fifth off the time is the rule for most foods, and the temperature also drops 25°F. Vegetables finish sooner than that. Cakes and bread should lose less time and less heat, or the middle stays wet while the outside is done.
Will this match my air fryer?
No model is in the formula. A small basket runs hotter than a large oven-style one. Start checking at the earlier minute and pull the food when it is done, not when the timer ends.
What about frozen food?
Switch on Frozen. The temperature stays where the oven recipe put it, and the time is cut by about 30%. Start checking at about half the original time. A bag that already prints an air fryer time does not need the conversion.
Can I start from an air fryer recipe?
Yes. Switch to “From an air fryer recipe.” The same drop is added back, and the time is divided by the same factor.