Oven temperature converter
Convert a recipe’s oven temperature between conventional and fan ovens, °C, °F and gas marks.
That's about the same as baking a cake.
What it means
What do you bake at that?
Fan settings are 20 °C or 25 °F below conventional, the usual rule; check your oven manual, as some already adjust. Gas marks follow the British table, rounded to the nearest mark.
Every unit
That oven setting every way
Learn
Three things worth knowing
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Fan = minus 20
Take 20 °C (25 °F) off a conventional temperature for a fan oven, or add it back the other way.
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Gas marks
Gas marks come from the “Regulo” thermostat on British gas cookers in the 1920s; the numbers stuck long after the dials changed.
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350 °F is not 350 °C
350 °F is 180 °C. Set a metric oven to 350 and you will be near its maximum, hotter than a pizza oven setting.
Shortcuts
Popular oven temperature conversions
Background
About oven temperatures
A fan (convection) oven blows hot air around the food, which cooks it faster, so recipes written for a conventional oven are usually dropped by 20 °C or 25 °F: 180 °C becomes 160 °C fan.
Gas marks run from ¼ to 10: mark 1 is 275 °F (140 °C), and each mark above adds 25 °F. Mark 4, 350 °F or 180 °C, is the classic cake temperature.