Oven Temperature Converter

Convert oven temperatures between Celsius, Fahrenheit and gas mark.

Celsius

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Fahrenheit

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Gas mark

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Conventional oven temperatures. For a fan oven, reduce by about 20°C (one gas mark).

Three ways to set an oven

Recipes from different places quote oven heat differently: degrees Celsius, degrees Fahrenheit, or a gas mark. This converter takes any one of them and shows the other two, plus a quick description of how hot that is.

°F = °C × 9/5 + 32　·　gas mark ≈ one step per 14°C

Gas marks do not map exactly onto round Celsius numbers, so the converter snaps to the nearest standard mark. For baking, getting within a mark is usually close enough — ovens vary more than that between models anyway.

Worked example

180°C converts to 356°F, or gas mark 4 — a moderate oven, the standard setting for many cakes and roasts.

Getting the heat right

Oven temperature is one of the biggest factors in how a dish turns out, yet dials are rarely precise and ovens often run hot or cold. Converting confidently between scales means you can follow any recipe, wherever it is from.

Handy to know

Fan runs hotter. Drop about 20°C, or one gas mark, for a fan oven.
Use an oven thermometer. Many ovens are off by 10–20°C from the dial.
Preheat fully. Especially for baking, where the starting heat sets the rise.

Frequently asked questions

How do Celsius and Fahrenheit relate?

Multiply Celsius by 9/5 and add 32 to get Fahrenheit. To go back, subtract 32 and multiply by 5/9. Oven dials are usually rounded to convenient numbers.

What is a gas mark?

Gas mark is a scale used on gas ovens, mainly in the UK. Each step is roughly 14°C; gas mark 4 is about 180°C, a common moderate baking temperature.

Should I adjust for a fan oven?

Fan (convection) ovens run hotter for the same dial setting, so recipes often suggest reducing the temperature by about 20°C or one gas mark. This converter shows conventional temperatures.

Why are converted values sometimes rounded?

Oven temperatures are not precise to the degree, so converted figures are rounded to practical settings you can actually dial in.