247 C converts to Gas Mark 9 in UK ovens and air fryers. This high temperature is ideal for professional baking, pizza, or achieving crispy textures in your air fryer. Whether you're following a recipe from airfryerrecipe.co.uk or adapting traditional oven instructions, knowing this conversion ensures perfect results every time.
Gas Mark 9 represents one of the highest temperature settings on British ovens, equivalent to 247 C or 477 F. This intense heat works particularly well for air frying where you want to achieve that perfect golden crisp on foods like roast potatoes or chicken wings. Many air fryer recipes at airfryerrecipe.co.uk/recipes recommend starting at this temperature before reducing heat for thorough cooking.
The Gas Mark system was developed specifically for UK gas ovens, but modern electric ovens and air fryers often include both Celsius and Gas Mark references. When converting 247 degrees C to Gas Mark, it's worth noting this falls at the upper end of most domestic oven scales. For those using fan-assisted ovens, you'll typically reduce the temperature by 20 C while keeping the same Gas Mark.
This high temperature creates immediate surface browning through the Maillard reaction, sealing in juices while creating delicious textures. In air fryers, 247 C to Gas Mark 9 helps achieve restaurant-quality crispness on everything from spring rolls to chicken thighs. The rapid air circulation at this heat mimics professional deep-frying with significantly less oil.
Traditional gas ovens at Gas Mark 9 (247 C) provide consistent radiant heat perfect for Yorkshire puddings or pastry. Modern air fryers reach this temperature faster and maintain it more efficiently, making them excellent for small batches of chicken or vegetables. Always preheat your appliance - this ensures the 247 C to Gas Mark conversion delivers predictable results.
Fan ovens circulate hot air, so they typically cook faster at the same temperature. When using 247 C in a fan oven, you might reduce the Gas Mark slightly or shorten cooking times by 5-10 minutes. Air fryers, being compact fan ovens essentially, benefit from checking food a few minutes early when using these high temperatures.
When converting recipes between conventional ovens and air fryers at 247 C to Gas Mark 9, reduce cooking times by about 20%. The concentrated heat and air circulation cook food faster. For example, a 30-minute oven recipe might take just 22-25 minutes in an air fryer at the same temperature.
This fierce heat excels at creating crisp exteriors while keeping interiors moist. Perfect for roast potatoes, where you want golden crunch outside and fluffy centres. It's also ideal for puff pastry, giving that dramatic rise and flaky texture. In air fryers, 247 C to Gas Mark works wonders for reheating fried foods or making ultra-crispy bacon.
Many professional bakers use 247 C (Gas Mark 9) for the first 10-15 minutes of bread baking to achieve oven spring, then reduce heat. The same technique applies to air fryer cakes - start high for rise, then lower to finish cooking through. Always monitor closely at these temperatures as food can go from perfect to burnt quickly.
When working with 247 C to Gas Mark 9, use oven gloves and keep children away. Air fryer baskets become extremely hot at this temperature - always use the handle. For cleaning after high-heat cooking, airfryerrecipe.co.uk/air-fryer-cleaner offers great maintenance tips.
For those regularly converting between 247 C and Gas Mark, keeping a conversion chart like the one at airfryerrecipe.co.uk/air-fryer-conversion-chart handy saves time. Remember that all ovens vary slightly - an oven thermometer helps verify your 247 C to Gas Mark 9 setting is accurate. Air fryers typically have more precise temperature control.
When baking delicate items like soufflés or custards at 247 C, position them carefully in the oven or air fryer. The intense heat can cause uneven cooking if too close to heating elements. Rotating pans halfway through ensures even exposure to this high temperature throughout the cooking process.
