Oven Temperature Converter
Convert oven temperatures between Celsius, Fahrenheit, and Gas Mark, plus the fan (convection) setting. Enter any one and get the rest instantly. Calculates in your browser.
Fahrenheit
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Show the math
Celsius and Fahrenheit relate linearly, and Gas Mark steps by 25°F:
°F = °C × 9⁄5 + 32 · Gas Mark 1 = 275°F, each mark +25°F
Fan (convection) ovens cook faster, so a common rule is to set them about 20°C lower than a conventional recipe temperature. Gas Mark is rounded to the nearest whole setting.
What this does
An oven temperature converter switches between Celsius, Fahrenheit, and Gas Mark, plus the fan (convection) setting, enter any one and get the rest.
How to use it
- Enter a temperature in any scale.
- Read the equivalents instantly.
- Check the Gas Mark and fan setting.
- Use the fan value for a convection oven.
How it works
Gas Mark 1 is 275°F and each mark adds 25°F. A fan oven is usually set about 20°C lower than a conventional recipe, since moving air cooks faster.
°F = °C × 9⁄5 + 32
Example
180°C is 356°F, about Gas Mark 4, or 160°C fan.
Sources & methodology
Last updated .
Frequently asked questions
How do Celsius and Fahrenheit relate?
They convert linearly: °F = °C × 9⁄5 + 32. So 180°C is 356°F and 200°C is 392°F.
What is Gas Mark?
It is the dial scale on gas ovens. Gas Mark 1 is 275°F and each mark adds 25°F, so Gas Mark 4 is 350°F (about 180°C). The tool rounds to the nearest whole mark.
How much lower should a fan oven be?
A common rule is to set a fan (convection) oven about 20°C lower than a conventional recipe temperature, because moving air cooks food faster.
Is my data stored?
No. Everything is calculated locally in your browser.
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