425 F to C: Oven Temperature Conversion Chart

This chart covers every common oven setting from 225°F to 500°F. The exact column uses the NIST formula, and the oven column shows how UK and European recipes round it. Fan and gas mark values come from Which? and the gas mark scale.

Celsius to Fahrenheit Chart

Recipes from the UK, Europe and Australia list oven heat in Celsius. Multiply by 1.8 and add 32 to get Fahrenheit. US recipes mostly use 25 degree steps, so the last column shows the closest of those.

425 fahrenheit to celsius works out to 218.3°C. Subtract 32 from 425 to get 393, then divide by 1.8. Recipes round the answer to 220°C, the nearest 10 degree setting.

What 425°F Is Used For

425°F is a hot oven, labeled gas mark 7. Recipes use it for roasted vegetables, sheet pan chicken, pie crusts and puff pastry. The high heat browns the outside before the inside dries out.

240 C to F

240 C to F is 464°F. Multiply 240 by 1.8 to get 432, then add 32. On a US oven, set 465°F if your dial allows it, or use 475°F and check the food a few minutes early.

218°C and 260°C in Fahrenheit

218°C is 424.4°F, which rounds to 425°F. That is why some charts list 425°F as 218°C and others as 220°C. 260°C is exactly 500°F, which is gas mark 10.

The Two Formulas

Both formulas come from NIST. Water freezes at 32°F or 0°C and boils at 212°F or 100°C at sea level. The gap of 180°F equals 100°C, which is where the 1.8 comes from.

°C = (°F minus 32) ÷ 1.8

°F = (°C × 1.8) + 32

A fan pushes hot air around the food, so it cooks faster than a regular oven at the same setting. UK guides from Which? advise setting a fan oven about 20°C lower. US makers such as LG lower convection modes by 25°F, often on their own through auto conversion.

Check for Auto Conversion

Many new US ovens lower the heat for you in convection mode. If yours does, enter the recipe temperature as written. If you lower it yourself as well, the food will cook too cool and take longer.

Oven Dials Are Not Always Right

Which? testing found ovens that ran up to 40°C hotter than the dial setting. A cheap oven thermometer shows the real heat inside. Place it in the center of the oven and read it once the oven has preheated.

Oven heat is not the same as food doneness. Use a food thermometer to check the inside of meat, fish and eggs. These are the safe minimum internal temperatures from FoodSafety.gov.

You only need one formula for each direction. For Fahrenheit to Celsius, subtract 32 and divide by 1.8. For Celsius to Fahrenheit, multiply by 1.8 and add 32.

Fahrenheit to Celsius Example

A cookie recipe says 375°F. Subtract 32 to get 343, then divide by 1.8 to get 190.6°C. Set the oven to 190°C, or 170°C with the fan on.

Celsius to Fahrenheit Example

A bread recipe says 230°C. Multiply by 1.8 to get 414, then add 32 to get 446°F. Set a US oven to 450°F.

Tips for Getting Oven Heat Right

Small temperature changes can affect how food browns and rises. These habits help most with cakes, bread and pastry. Each one is quick to do.

• Preheat fully. Wait for the preheat signal before the food goes in.
• Use an oven thermometer. It shows the true heat, which can differ from the dial.
• Note the oven type. Lower the heat for fan ovens unless the oven does it for you.
• Round to your dial. Pick the closest setting your oven offers, then check the food early.
• Keep the door closed. Opening it lets out heat and slows baking.