Converting 402°F in a fan oven to a conventional oven temperature is straightforward—simply reduce it by 20°F, making it 382°F. Fan ovens circulate hot air, cooking food faster and more evenly, which means you often need to adjust temperatures when switching to a conventional oven. This guide will help you master the conversion, whether you're baking, roasting, or even using an air fryer.
Fan ovens, also known as convection ovens, use a fan to distribute heat evenly, reducing cooking time. Conventional ovens rely on radiant heat, which can lead to uneven cooking if temperatures aren’t adjusted correctly. For example, 402°F in a fan oven equates to roughly 382°F in a conventional oven. This adjustment ensures your dishes cook properly without burning or undercooking.
If you're using an air fryer, which operates similarly to a fan oven, you might also need to tweak temperatures. Check out our air fryer conversion chart for precise adjustments. Whether you're making crispy chicken or a fluffy cake, getting the temperature right is key.
Since fan ovens cook faster, you’ll need to reduce both temperature and cooking time when using a conventional oven. A good rule of thumb is to lower the temperature by 20°F and check for doneness 5-10 minutes earlier than the recipe suggests. For instance, if a recipe calls for 402°F in a fan oven for 30 minutes, try 382°F for 25 minutes in a conventional oven.
Air fryers, like fan ovens, also cook faster. If you're adapting a conventional oven recipe for an air fryer, reduce the temperature slightly and keep a close eye on your food. Our recipe collection includes plenty of air fryer-friendly dishes with adjusted timings.
Roasting meats like chicken or lamb at 402°F in a fan oven? Drop to 382°F in a conventional oven for juicy, evenly cooked results. For baked goods like cakes or cookies, the same rule applies—lower the temperature to prevent over-browning. If you're using an air fryer, refer to our chicken recipes for perfectly cooked meals every time.
Air fryers and fan ovens both use forced air, making them more efficient than conventional ovens. However, air fryers are smaller, so heat circulates even faster. If converting a fan oven recipe to an air fryer, you might need to reduce the temperature further. For example, 402°F in a fan oven could be around 375°F in an air fryer.
Cleaning your appliances is just as important as temperature control. Use our recommended air fryer cleaner to keep your device in top condition. Proper maintenance ensures consistent cooking performance, whether you're using a fan oven, conventional oven, or air fryer.
Always preheat your oven or air fryer to the adjusted temperature for best results. Use an oven thermometer to verify accuracy, as some appliances run hotter or cooler than set. If you're unsure, start with a lower temperature and increase if needed. For more tips, explore our dessert recipes, which include detailed temperature guides.
