Air Fryer Time and Temperature Calculator

How the air fryer conversion works

An air fryer is a small oven with a strong fan. The fan pushes hot air across the food, so the surface cooks faster and browns sooner than in a regular oven. That is why every oven recipe needs two changes: a lower temperature and less time.

The rule most cooks and appliance makers use is simple. Subtract 25 F from the oven temperature, then multiply the oven time by 0.8. In plain terms, cut the time by about 20%.

• Temperature: oven temperature minus 25 F
• Time: oven time times 0.8
• Convection oven: subtract only 10 F, since it already has a fan

Take a recipe that bakes 30 minutes at 400 F. The air fryer setting is 375 F, and the time is 30 times 0.8, which is 24 minutes. Start checking at about 21 minutes. The calculator above does this for any numbers you enter, in Fahrenheit or Celsius, and shows the time you save.

The 25 F drop is a starting point, not a law. A thin piece of fish, a small batch of cookies or anything close to the heating element may need a little less. A dense roast or a full basket may need a little more. Treat the number as a first guess and adjust after the first cook.

Worked example: chicken wings from a 425 F oven recipe

Say a party recipe says to roast chicken wings for 40 minutes at 425 F. Here is the full conversion.

• Temperature: 425 F minus 25 F = 400 F, which is the top setting on many air fryers
• Time: 40 minutes times 0.8 = 32 minutes
• Check point: about 29 minutes, then every 2 minutes after

Wings carry a lot of fat, so they brown fast. Shake the basket at the halfway mark, around 16 minutes, and flip the pieces skin side up for the last 5 minutes so the skin crisps. Pull them when a thermometer reads 165 F in the thickest part. If the outside is browning before the inside is done, drop to 375 F and add 3 minutes.

The time saved here is 8 minutes, and the wings finish with a crisper skin than an oven usually gives. That is the trade the air fryer makes: less time and less heat, but you have to watch the surface because the fan browns it quickly.

Worked example: a 350 F cake

Cakes are the recipe people get wrong most often. Take a yellow cake that bakes 30 minutes at 350 F in a round pan.

• Temperature: 350 F minus 25 F = 325 F
• Time: 30 minutes times 0.8 = 24 minutes
• Check point: 24 minutes with a toothpick in the center

Two things matter more than the numbers. First, the pan has to fit with an inch of space around it so air can move. Second, the top of a cake browns fast in moving air, so if the center is still wet at 24 minutes, lay a piece of foil loosely over the top and give it 3 to 5 more minutes. A cake is done when a toothpick comes out with a few moist crumbs, not wet batter.

For cupcakes, the same 325 F works, but the time drops to about 12 to 18 minutes. Start checking at 12, since small cups dry out quickly in the fan.

Oven to air fryer conversion chart

Use this table as a quick reference for common oven settings. The time column assumes the oven recipe takes 30 minutes; for other times, multiply by 0.8.

The time stays the same in the last column because the drop is always 20%, whatever the temperature. Only the temperature changes across the rows. If your air fryer stops at 400 F, use 400 F for any recipe at 425 F or above and add a minute or two.

Always confirm doneness with a food thermometer for meat, poultry, seafood and eggs. The USDA safe minimum internal temperature chart lists the target for each food, and the USDA guide to cooking meat safely explains where to place the probe.

When the standard rule needs adjusting

The 25 F and 20% rule fits most recipes, but a few situations need a different touch.

• Frozen foods. Start cold, so they need less of a temperature drop. Use 15 F instead of 25 F and keep the time close to the oven time, checking early.
• Breaded and battered items. The coating browns fast. Drop the temperature another 10 F so the inside cooks before the crust darkens.
• Thin items. Fish fillets, thin pork chops and shrimp cook in minutes. Check at 60% of the oven time rather than 80%.
• A crowded basket. Food piled up blocks the air. Cook in a single layer, or add 3 to 5 minutes and shake once or twice.
• Dense roasts. A roast can need more time, not less, because the fan cannot reach the center. Use a thermometer and expect a longer cook.

One habit makes all of this easier. Write down what you set and how it turned out the first time, then adjust one number next time. After two or three tries you will know your own air fryer, which beats any chart.

Getting crisp results and cooking safely

Crispness comes from dry heat and space. Pat food dry before it goes in, use a light coat of oil, and leave gaps between pieces so the fan can reach every surface. Shake the basket once or twice during cooking to move the food around, which stops one side from sitting in its own steam.

Safety matters more than crispness. Air fryers cook fast, which makes it easy to pull food out before it is done. Use a food thermometer on any meat, poultry, fish or egg dish. Poultry and stuffing need 165 F, ground meat needs 160 F, and whole cuts of beef, pork and lamb need 145 F with a 3 minute rest. The FSIS temperature chart is the source for these numbers.

Leftovers from the air fryer follow the same cooling rules as any cooked food. Get them into the fridge within 2 hours, or 1 hour if the room is above 90 F. The USDA food safety guidance is the place to confirm the details if you are unsure.