Oven Temperature Converter

Convert between Celsius, Fahrenheit, gas mark and fan oven — instantly.

Conventional °C
–
Fahrenheit °F
–
Fan °C
–
Gas mark
–
Fan ovens run hotter. The fan circulates heat, so a fan oven is set about 20 °C lower than a conventional oven for the same result (or drop the gas mark by 1). This tool adjusts automatically.

Oven temperature conversion chart

DescriptionConv. °CFan °C°FGas mark
Very cool11090230¼
Cool1401202851
Warm1501303002
Moderate1801603554
Mod. hot1901703755
Hot2001803906
Hot2202004307
Very hot2402204659

How to convert oven temperatures

Celsius to Fahrenheit: multiply by 9, divide by 5, then add 32 (°F = °C × 9 ⁄ 5 + 32). Fahrenheit to Celsius: subtract 32, multiply by 5, divide by 9.

Conventional to fan: subtract about 20 °C. So a recipe at 200 °C conventional becomes roughly 180 °C in a fan oven. Gas marks are a UK/Commonwealth scale running from ¼ (very cool, ~110 °C) up to 9 (very hot, ~240 °C); each step up is roughly 14 °C / 25 °F.

Different ovens vary, so treat conversions as a starting point and use an oven thermometer for precision baking.