Quick converter
Enter either field — the other two update automatically. Values are rounded to the nearest whole degree and the nearest standard gas mark.
Converting ingredient amounts too? The full recipe converter handles cups, grams, ounces, and ml in one paste.
Try the recipe converter →Full oven temperature chart
| Fahrenheit | Celsius | Gas mark | Description |
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Why oven temperatures don't convert to round numbers
Fahrenheit and Celsius use different-sized degrees, so converting between them rarely lands on a clean number. 350°F converts exactly to 176.7°C, which is why almost every recipe and appliance rounds it to 180°C instead. The rounding is intentional and doesn't meaningfully change how something bakes.
Gas mark isn't a direct conversion, it's a range
Gas mark groups temperatures into numbered settings rather than exact degrees, a holdover from early gas ovens without precise thermostats. Gas mark 4 covers the same territory as 350°F/180°C, but treat it as the closest standard setting rather than an exact figure.
If you're scaling a whole recipe rather than just converting the oven temperature, the recipe scaling calculator handles ingredient quantities the same way this page handles degrees.
FAQ
Common questions
350°F is 177°C, which recipes almost always round to 180°C. It's gas mark 4, the most common temperature for cakes, cookies, and everyday bakes.
Subtract 32, then multiply by 5/9. For 350°F: (350-32) × 5/9 = 176.7, rounded to 177°C. Most recipes round further to the nearest 10, giving 180°C.
180°C is gas mark 4, equivalent to 350°F. This is the standard temperature for most cake and cookie recipes in UK ovens.
Yes. Fan and convection ovens circulate heat more efficiently, so a recipe written for a conventional oven usually needs to be lowered by about 20°C (25°F), or the bake time shortened by roughly 10 minutes.
Gas mark is a legacy scale from early UK gas ovens without precise thermostats, so temperatures were grouped into numbered settings instead of exact degrees. Many UK recipes and older cookbooks still use it alongside Celsius.