425 °F to °C

About 425 °F in °C

425 °F is 218.3 °C. The formula is (F − 32) × 5/9: 425 − 32 = 393, then 393 × 5 ÷ 9 = 218.3. Celsius and Fahrenheit cross at − 40, not at zero, which is why the subtraction comes first.

Fan ovens run about 20 °C cooler than the temperature written on a conventional recipe, so a 425 °F instruction becomes 198 °C on a fan setting. If your oven only has round numbers, choose the nearest (220 °C) and adjust the time by about 10%.

A 425 °F oven is in the hot band — roughly gas mark 6. That matters more than the exact degree: a 10 °C error changes a sponge by a couple of minutes, while the wrong band changes whether the outside browns before the middle sets.

Gas marks are a third scale in the same kitchen: 425 °F, 218 °C and a gas mark all describe one oven heat, and British recipes still print two of the three side by side. Converting 425 °F to 218 °C and then to a fan setting of 198 °C keeps the recipe's intent even when your oven runs a little hot.

Recipe apps often write the question as 425 f to c rather than with degree symbols, and the answer is the same: 218.3 c. Rounded to 218 c, that is what most oven dials can actually be set to.

How the calculation works

• (425 °F − 32) × 5/9 = 218.3 °C
• Fan oven: 218.3 − 20 = 198.3 °C
• Reverse: (218.3 °C × 9/5) + 32 = 425 °F

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