We built the most precise free oven to air fryer conversion calculator on the web — because generic rules weren't good enough.
We use food-category multipliers and fryer-type adjustments, not just a flat "subtract 25°F" formula.
Our air fryer calculator is 100% free to use. No sign-up, no paywall, no ads cluttering your screen.
Designed to work perfectly on your phone in the kitchen — where you actually need it most.
Our conversion formula is based on manufacturer guidelines from Ninja, Cosori, and Philips, plus peer-reviewed thermal cooking studies.
OvenToAirFryerCalculator.com was created out of frustration. Every time we tried to adapt an oven recipe for the air fryer using the generic "subtract 25°F and cut time by 20%" rule, the results were inconsistent — baked goods came out dry, chicken was overdone, and frozen foods were still cold in the middle.
The problem is that a flat formula ignores the most important variables: what you're cooking, how much of it you're cooking, and what kind of air fryer you own. A basket-style Cosori cooks very differently from a large oven-style Ninja. Chicken thighs behave differently than a Victoria sponge. A single salmon fillet doesn't need the same adjustment as a full tray of roasted vegetables.
So we built something better. Our oven to air fryer conversion calculator applies food-category multipliers validated against manufacturer white papers and culinary testing. It accounts for food type, portion size, and air fryer model type — giving you results you can actually trust, not just a starting point you have to second-guess.
Our single-page tool gives you everything you need for a successful oven to air fryer conversion:
We are committed to keeping this tool free, fast, and accurate. We update our conversion formula as new air fryer models are released and new cooking research becomes available. If you have a question or a suggestion for improving the calculator, we'd love to hear from you — contact us here.