Oven Temperature Converter
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°F, °C, gas mark — and fan
Enter any oven temperature and get it in Celsius, Fahrenheit and gas mark instantly. Tick fan/convection and we subtract the standard 20°C so your fan oven doesn't burn the recipe.
Frequently asked questions
What is gas mark?
The UK's oven scale: Gas 4 ≈ 180°C/350°F, Gas 6 ≈ 200°C/400°F. Old British recipes use it exclusively.
Do I lower the temp for a fan oven?
Yes — fan/convection circulates heat, so reduce by 20°C (about 25°F). Tick the box above and we do it for you.
Why 350°F everywhere in US recipes?
It's the all-purpose moderate oven — 180°C. Cakes, cookies, casseroles all love it.
How accurate are home ovens?
Often ±15°C off! An oven thermometer is the best $10 a baker spends. This converter is exact; your oven may not be.