All four scales at once
An oven temperature can be written four ways: Fahrenheit (US), Celsius (everywhere else), gas mark (UK), and fan-assisted (Europe). This tool converts one input into the other three, plus the nearest practical dial setting.
The fan correction
- Fan ovens run about 20 °C (25 °F) hotter than the dial
- Reduce by 20 °C when converting conventional → fan
- Increase by 20 °C when converting fan → conventional
- Some newer ovens auto-correct; check the manual
Baking versus roasting
Baking is temperature-sensitive: a 15 °C error changes rise and browning. Roasting is forgiving — 20 °C either way is fine for vegetables and meat. Convert carefully for cakes, loosely for dinner.
Checking your oven
Domestic ovens routinely run 10–20 °C off the dial. An inexpensive oven thermometer left inside for 20 minutes will tell you your oven's real offset — worth knowing once, then you can adjust every recipe by that amount.
Frequently Asked Questions
What is 350 °F in a fan oven?
About 160 °C fan (180 °C conventional).
Is gas mark 4 always 180 °C?
Yes for conventional ovens; 160 °C if fan-assisted.
Why does my oven run hot?
Thermostat calibration drifts; verify with a standalone thermometer.
Privacy & Your Data
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