Oven to Air Fryer Conversion Calculator: Convert Recipe Times and Temperatures

Most recipes are still written for a conventional oven, but an air fryer cooks differently. It is a small countertop convection oven: a heating element and a powerful fan blow hot air around the food in a tight basket, so the outside browns and crisps sooner and the inside cooks faster. That is why an oven recipe needs two changes before you air fry it: a lower temperature and a shorter cook time.

How to Use the Oven to Air Fryer Conversion Calculator

1. Pick the direction. Oven → Air fryer converts an oven recipe; Air fryer → Oven converts an air fryer recipe back for a regular oven.
2. Enter the temperature and cook time from the recipe, in °F or °C. Switching units keeps the same temperature, so you can type 200°C or 400°F.
3. Choose the oven the recipe was written for. Most American recipes assume a conventional oven. If the recipe says convection or fan oven, pick that, because those recipes need a smaller adjustment.
4. Choose the food, its thickness and how full the basket will be. Thick pieces and a crowded basket take longer; chicken and fish also show the safe internal temperature.
5. Read the result: the air fryer temperature and cooking time, when to start checking and when to shake or flip. The “How we worked it out” box shows every step, so you can check the conversion yourself.

How to Convert Oven Recipes to Air Fryer Recipes, Step by Step

Converting recipes by hand takes the same conversion rules the calculator uses. For a recipe written for a conventional oven:

1. Check the oven type in the instructions. No mention of a fan usually means a conventional oven. Convection and fan-oven recipes are already adjusted for moving air, so they change less (see the table below).
2. Reduce the temperature by 25 degrees Fahrenheit (15°C). 400°F becomes 375°F and 350°F becomes 325°F. Most air fryers top out at 400°F, so a 425°F or 450°F oven recipe becomes 400°F with a little extra time.
3. Reduce the cooking time by about 20%. Multiply the oven time by 0.8: 30 minutes becomes 24, 20 becomes 16 and 45 becomes 36.
4. Preheat the air fryer for 3 to 5 minutes if your model recommends it, just as you would preheat the oven.
5. Arrange the food in a single layer in the basket, with space around each piece so the hot air can circulate. Cook in batches rather than piling food up.
6. Shake the basket or flip the food halfway through so it browns evenly on all sides.
7. Check early and test for doneness. Start checking at about three quarters of the new time. Use a thermometer for meat, poultry and fish, and a toothpick for anything you bake.

Converting a recipe only has to be done once. When it works in your air fryer, write the new temp and time on the recipe card, and next time it is simply an air fryer recipe.

Oven to Air Fryer Conversion Chart (Free Printable Cheat Sheet)

Air fryer times and temperatures for common foods, beside the usual oven settings. They are starting points for a basket air fryer, not guarantees. To keep a copy by the stove, use the Print the chart button in the calculator: it prints just this chart as a one-page cheat sheet, handy for the fridge door or inside a cabinet.

Small, thin foods such as fries, chicken nuggets and mini pizzas often cook even faster than the 20% rule suggests, which is why the chart and the calculator tell you when to start checking, not only how long to cook.

How to Convert Oven Temperatures for the Air Fryer

Use this table to convert oven temperatures at a glance. The middle column is for recipes written for a conventional oven (25°F lower); the last is for convection oven recipes, which already assume moving hot air and keep the same temperature.

Temperatures are rounded to the nearest 5 degrees, the steps most air fryer dials use. Anything that works out above 400°F is set to 400°F, the top setting on most models; cook a little longer and check often.

Air Fryer Cooking Times: How Much to Reduce the Cook Time

Fryer cooking times drop by about 20% from a conventional oven recipe, 15% from a fan-assisted oven and 10% from a convection oven. These oven temperatures and cooking times are for an average thickness of food in a single layer:

Thickness matters as much as the oven type. The calculator multiplies the time by 0.85 for thin pieces and by 1.20 for thick ones, and by 1.15 for a full basket, because crowded food steams instead of crisping.

Conventional Oven vs Convection Oven Recipes

A conventional oven heats with elements at the top and bottom and relies on still air. A convection oven adds a fan, and often its own heating element, that moves hot air around the food, so it browns more evenly and cooks a little faster. An air fryer takes that idea further: the fan is close to the food in a small space, so the hot air around it moves even faster and air fryers cook food sooner than either oven. That is why the conversion depends on which appliance the recipe was written for.

The conversion rules the calculator uses

After the oven type, the calculator makes one adjustment for the food: baked goods go 5°F lower again, so the middle sets before the top browns. Then it adjusts the time for thickness and for how full the basket is, rounds the temperature to the nearest 5 degrees and caps it at 400°F.

How to Adapt Recipes for Frozen Foods

Frozen foods are the easiest to convert. Many packages now print air fryer instructions, and those are written for that exact product, so use them first. When the bag only gives oven instructions, the 25-degree rule is still a good starting point for the temperature, but small frozen foods usually need less time than the 20% rule gives: often half to two thirds of the oven time.

• Cook straight from frozen. There is no need to thaw fries, chicken nuggets, fish sticks or frozen pizza.
• Skip the oil on foods that were fried before freezing; they already have enough.
• Shake every few minutes so pieces don’t stick together, and don’t overfill the basket.
• Check from about half the oven time. Frozen fries that take 20 to 25 minutes in the oven are usually crispy in 12 to 15 minutes in the air fryer.
• Raw frozen meat, such as frozen chicken breasts, takes longer than thawed; cook until the center reaches a safe temperature.

Baking in the Air Fryer: Cakes, Muffins and Cookies

You can bake in an air fryer, but baking needs a gentler adjustment, because the fan can brown the top before the middle has set. For bake recipes from a conventional oven the calculator lowers the temperature by 30°F, not 25°F.

• Use a small cake pan, ramekins or silicone cups that fit with space around them so air can still circulate.
• Fill pans no more than two thirds full and bake small batches of cookies on a piece of parchment cut to fit.
• If the top browns too fast, tent it with foil tucked firmly under the pan so it can’t blow up into the heating element.
• Start testing with a toothpick from the time the calculator shows.

Converting Sheet Pan and Casserole Recipes

A standard sheet pan won’t fit in a basket air fryer, but most sheet pan dinners convert well if you cook them in batches: keep each batch in a single layer and keep the cooked food warm while the next one cooks. Oven-style air fryers come with their own trays, which work like a small sheet pan. Recipes that rely on liquid, such as casseroles with a lot of sauce, soups and stews, gain little from an air fryer; a regular oven or the stovetop is the better appliance for those.

Air Fryer Cooking Tips for Better Results

• Preheat for 3 to 5 minutes if your manual recommends it. Without it, add a minute or two.
• Give food room. Hot air has to reach every side; a crowded basket cooks unevenly and turns out soft instead of crispy.
• Pat food dry and use a light coat of oil. A teaspoon of oil or an oil mister is enough. Many manufacturers advise against aerosol cooking sprays, which can damage nonstick baskets.
• Shake or flip halfway so food browns evenly.
• Skip wet batters. They drip through the basket before they set; use a dry breading instead.
• Weigh down light foods. The fan can lift slices of bread or parchment; never preheat with an empty liner in the basket.
• Use foil and liners carefully, only where air can still move around them. See can you put foil in an air fryer.
• Clean the basket after each use; old grease smokes at high heat.

Food Safety: Check Doneness With a Thermometer

Time is a guide; temperature is the test. Check the thickest part with an instant-read thermometer: chicken and turkey 165°F (74°C), ground meat 160°F (71°C), and steaks, pork chops and fish 145°F (63°C), with a 3-minute rest for whole cuts of meat. The meat temperature chart has the full USDA list.

Converting Air Fryer Recipes Back to the Oven

Run the rule backwards. For a conventional oven, set it about 25°F higher and allow about 25% more time (the air fryer time divided by 0.8). For a convection oven, keep the same temperature and add about 10%. Spread the food on a sheet pan in one layer and turn it halfway. The calculator does this when you choose Air fryer → Oven.

Why Your Air Fryer Times May Differ

• Thickness and size. A thick chicken breast takes much longer than a thin cutlet at the same temperature.
• How full the basket is. Air needs room. Cook in a single layer, or in batches.
• Your appliance. Wattage, fan power and basket size vary. Small, powerful basket air fryers usually cook faster than large oven-style models. If you are choosing one, our best air fryer guide compares basket sizes, functions and features.
• Frozen or thawed. Frozen food takes longer; follow the package where it gives air fryer times.
• Preheating. A preheated basket cooks a few minutes faster than a cold one.

Oven to Air Fryer Conversion FAQ

How do I convert oven temperature to air fryer temperature?

For a recipe written for a conventional oven, reduce the temperature by 25°F (about 15°C). For a convection oven recipe, keep the same temperature. Most air fryers go no higher than 400°F.

How do I convert oven cooking time to air fryer time?

Reduce the cook time by about 20% for a conventional oven recipe: multiply by 0.8. A 20-minute oven recipe becomes about 16 minutes, and a 45-minute one about 36. Start checking at about three quarters of the new time.

What is 350°F in an air fryer?

About 325°F, for about 20% less time than the oven recipe. For cakes, muffins and cookies, about 320°F.

What is 375°F in an air fryer?

About 350°F. A 20-minute oven recipe becomes about 16 minutes.

What is 400°F in an air fryer?

About 375°F. A 30-minute oven recipe becomes about 24 minutes, checked from 18.

What is 425°F in an air fryer?

About 400°F, which is the top setting on most air fryers.

Do I need to convert a convection oven recipe?

Only the time. Keep the temperature and cut the cook time by about 10%, because a convection oven already moves hot air around the food.

Do I need to preheat an air fryer?

Many models cook better after 3 to 5 minutes of preheating; check your manual. Without it, add a minute or two.

Can you put a sheet pan in an air fryer?

Not a standard one. Use a small pan, rack or tray that fits with space around it, or cook a sheet pan recipe in batches. Oven-style air fryers come with their own trays.

Can I cook frozen foods in an air fryer without thawing?

Yes. Fries, chicken nuggets, fish sticks and frozen pizza cook straight from frozen, usually in about half to two thirds of the oven time. Shake the basket every few minutes.

Why isn’t my air fryer food crispy?

Usually the basket is too full or the food is wet. Pat it dry, use a little oil, cook in a single layer and shake halfway.

Can I convert any recipe to the air fryer?

Most roasting, baking and oven-fried recipes convert well. Wet batters, soups, stews, saucy casseroles and large roasts that don’t fit the basket are better left in the oven or on the stove.

Is the 20% rule exact?

No. It is a reliable starting point, but food size, thickness, quantity and your appliance all change the cooking time. That is why the calculator gives a time to start checking, and why a thermometer is the final test for meat and fish.

Choosing an air fryer? See our best air fryer buying guide. Cooking tonight? Try chicken breast in the air fryer, crispy air fryer french fries or air fryer pork chops, and convert oven dials with the oven temperature converter.