Oven Temperature Converter
Convert between Celsius, Fahrenheit, and gas mark, with common baking presets and a fan/convection adjustment.
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How to convert oven temperatures
- Enter the temperature and choose Celsius, Fahrenheit or gas mark, or click a common baking temperature.
- Read it in the other units.
- Tick Show fan/convection oven equivalent if your oven has a fan.
About this tool
Gas mark values come from the standard UK conversion table used on oven dials and in recipe books — it isn't a simple formula, so values are matched against that table and interpolated for anything in between. Celsius and Fahrenheit convert with the exact formula (°F = °C × 9⁄5 + 32), so those two are always precise; gas mark is inherently the roughest of the three since ovens map it to temperature slightly differently by manufacturer.
This is specifically about oven dial settings — for volume and weight conversions between cups, grams, and ounces for ingredients, see the Cooking Measurement Converter; for general temperature conversion outside of cooking, see the Unit Converter.
Nothing you enter here is sent to a server — the entire tool runs as JavaScript in your browser tab.
Questions about oven temperatures
What is 180°C in Fahrenheit and gas mark?
180°C is 356°F, which recipes round to 350°F, and about gas mark 4.
How much lower should a fan oven be?
Usually about 20°C lower than a conventional oven, because the fan moves heat around more efficiently. Tick the fan option to see it.
What is gas mark 6 in Celsius?
About 200°C, or 400°F. In a fan oven, that’s about 180°C.
Why are gas mark conversions approximate?
Gas marks come from a traditional table rather than a formula, and ovens vary. Celsius and Fahrenheit convert exactly.