About
About OvenTemps
A free, fast oven temperature converter for home cooks who use recipes from both sides of the Atlantic.
What OvenTemps does
OvenTemps converts oven temperatures between Celsius, Fahrenheit and Gas Mark, and shows the matching fan oven, US convection and air fryer settings. Everything runs in your browser, with no sign-up and nothing to install.
How we convert
- Celsius and Fahrenheit are converted exactly: °F = °C × 9 ÷ 5 + 32, and °C = (°F − 32) × 5 ÷ 9. We then show the nearest setting on a real oven dial: 25°F steps in the US and 10°C steps in the UK.
- Gas marks follow the standard UK scale: Gas Mark 1 is 275°F and each mark adds 25°F up to Gas Mark 9 (475°F), with ¼ (225°F) and ½ (250°F) below. Celsius values match those used in UK recipe charts such as BBC Good Food’s.
- Fan ovens use the UK rule of 20°C lower than conventional. US convection uses 25°F lower, as recommended in manufacturer guidance such as GE Appliances’.
- Air fryer settings are a starting point: about 25°F (15°C) lower and about 20% less time.
- Food safety temperatures come from the USDA and the UK Food Standards Agency.
Every oven is different, so treat any converted setting as a starting point and check food a little early the first time.
How the site is funded
OvenTemps is free. Some guides may recommend kitchen tools through affiliate links, which earn us a small commission at no extra cost to you. See our affiliate disclosure and privacy policy.
Spotted a mistake?
Accuracy matters to us. If you think a conversion or a piece of advice is wrong, please tell us so we can check it.