240 C in a fan oven is equivalent to approximately 220 C with the fan setting. This 20-degree reduction accounts for the fan's efficient heat circulation, which cooks food faster and more evenly. When using an air fryer, which works similarly to a convection oven, you'll typically follow the same temperature adjustment principle. At airfryerrecipe.co.uk, we recommend this conversion for everything from roasted vegetables to baked goods.
The general rule for converting conventional oven temperatures to fan oven settings is to reduce the temperature by 20 degrees Celsius. This means 240 C becomes 220 C in a fan-assisted oven. The science behind this lies in how convection ovens circulate hot air, creating more efficient heat transfer to your food. Air fryers operate on this same principle, which is why many recipes on our recipe section specify slightly lower temperatures than traditional oven methods.
When baking at 240 C in a conventional oven, the fan equivalent of 220 C will yield similar results in less time. This temperature works particularly well for items like pastries, pies, and roasted meats where you want crisp exteriors and moist interiors. Our air fryer conversion chart provides quick references for all common temperature adjustments between oven types.
The 20-degree reduction accounts for the fan's ability to distribute heat more evenly throughout the cooking chamber. Without this adjustment, food would cook too quickly on the outside while remaining undercooked inside. This principle applies equally to fan ovens and air fryers, both of which use forced air circulation to speed up cooking times while maintaining food quality.
Modern air fryers essentially function as compact convection ovens, making the 240 C to 220 C conversion directly applicable. When preparing crispy foods like chicken wings or roast potatoes at what would be 240 C in a conventional oven, setting your air fryer to 220 C will achieve similar browning and texture. Many of our popular chicken recipes use this temperature adjustment for perfect results every time.
The smaller cooking chamber of an air fryer means heat reaches food even more efficiently than in a full-size fan oven. This is why monitoring cooking times becomes crucial - items may finish 10-20% faster than the original recipe suggests. Always check for doneness a few minutes early when converting conventional oven recipes to air fryer preparation at the 240 C fan oven equivalent.
When baking cakes or breads that normally require 240 C, the fan oven equivalent of 220 C may need slight recipe modifications. The increased air circulation can cause batters to set faster on top while remaining wet underneath. Reducing the temperature a further 10 degrees (to 210 C) and extending the cooking time often solves this issue. Our cake recipes include specific adjustments for fan-assisted baking.
The 240 C to 220 C fan oven conversion works particularly well for roasting vegetables, creating crispy potato dishes, and preparing many frozen convenience foods. This temperature range delivers the ideal balance between thorough cooking and surface browning. When using your air fryer at these settings, remember to shake or turn food halfway through cooking for even results, as recommended in our cleaning and maintenance guide.
Pizza reheating also benefits from the 240 C fan oven equivalent. The 220 C setting in an air fryer crisps the crust while melting cheese perfectly in just 3-5 minutes. This temperature works equally well for reviving leftover fried foods or giving store-bought pastries a fresh-from-the-oven texture. The key is adjusting cook times downward while maintaining the converted temperature.
