Air Fryer Conversion

How Oven-to-Air-Fryer Conversion Works

An air fryer cooks faster at a lower temperature than a conventional oven, thanks to its smaller, more direct convection airflow. A commonly-cited rule of thumb converts a recipe with two simple adjustments.

Key Factors to Consider

• These are general rules of thumb, not a precise formula. Actual air fryer performance varies noticeably between models — basket size, wattage, and airflow design all affect how much faster (or how much cooler) a given air fryer cooks compared to a conventional oven, so treat the converted values as a starting point, not a guarantee.
• Check doneness a few minutes before the converted time is up, especially the first time. Since results vary by model and food type, opening the basket to check a bit early costs nothing and helps you dial in your own air fryer’s actual behavior for that recipe next time.
• Overcrowding the basket undoes the speed advantage. An air fryer cooks quickly because hot air circulates directly around the food — packing the basket too full blocks that airflow and can leave food unevenly cooked or soggy, even with a correctly converted time and temperature.
• Some foods convert less predictably than others. Foods that rely on a liquid batter, a long slow braise, or a very large single piece of meat don’t always translate cleanly to air-fryer cooking using a simple temperature/time rule — this conversion works best for foods that would normally be roasted, baked, or crisped in a conventional oven.

Common Mistakes

• Converting a recipe that already has its own air fryer instructions. If a package or recipe already lists a dedicated air fryer temperature and time, use those directly instead of running them back through this oven-based conversion — they’re already calibrated to air-fryer cooking, and converting them a second time will usually undercook the food.
• Skipping the shake or flip. A conventional oven surrounds food with fairly even heat, but an air fryer’s airflow is directional, so food resting flat in the basket can brown unevenly. Shaking the basket or flipping food partway through — something a converted time alone doesn’t account for — is usually still necessary even after the conversion.
• Lining the basket with foil or parchment that blocks the vents. An air fryer’s speed comes from air circulating both above and below the food. Covering the whole basket bottom (rather than a small, perforated liner sized to leave the vents clear) traps that airflow and can leave the converted time inaccurate.
• Loading the basket in a thick, stacked layer instead of a single layer. The same overcrowding problem noted above also shows up when food is piled rather than spread out — even a basket that isn’t technically “full” can still block airflow if food is stacked several pieces deep.

The Formula

$$\vB{\text{Air Fryer Temp}} = \vA{\text{Oven Temp}} - 25°F$$ $$\vB{\text{Air Fryer Time}} = \vA{\text{Oven Time}} \times 0.8$$

This is a general starting point, not a guarantee — check doneness a few minutes early the first time you try a recipe.

Worked Example

A recipe calling for 400°F for 20 minutes:

1. Temp: $\vA{400} - 25 = \vB{375}$°F
2. Time: $\vA{20} \times 0.8 = \vB{16}$ minutes

Useful to Know

A converted time is only ever an estimate, but a safe internal temperature is not — it’s the actual measure of whether meat, poultry, or egg dishes are done enough to be safe to eat. Because air fryer models vary enough that the same converted time can finish a piece of chicken a few minutes early or late, the safest way to confirm doneness for meat and poultry is a food thermometer, not the clock. The U.S. government’s official minimum safe internal temperatures include 165°F (74°C) for poultry, 145°F (63°C) with a 3-minute rest for whole cuts of beef, pork, and lamb, and 160°F (71°C) for ground meats — see FoodSafety.gov’s full chart, cited below, for every category.