SpicesKitchen conversions
Oven temperature conversion: °F to °C, fan and gas mark
350 °F is 175 °C, or 155 °C in a fan oven. Exactly it’s 177 °C, so British charts and gas mark 4 round it up to 180 °C; either works in a home oven. US recipes give °F and British ones often give a gas mark, and both usually assume a conventional oven, so the charts give the fan setting as well.
Most common baking temperature
- 350 °F
- 175 °C
- 350 °F, fan oven
- 155 °C
- Gas mark 4
- 180 °C
Fahrenheit to Celsius
Celsius rounded to the nearest 5 °C, the way oven dials are marked.
| Fahrenheit | Celsius | Celsius, fan oven |
|---|---|---|
| 250 °F | 120 °C | 100 °C |
| 275 °F | 135 °C | 115 °C |
| 300 °F | 150 °C | 130 °C |
| 325 °F | 165 °C | 145 °C |
| 350 °F | 175 °C | 155 °C |
| 375 °F | 190 °C | 170 °C |
| 400 °F | 205 °C | 185 °C |
| 425 °F | 220 °C | 200 °C |
| 450 °F | 230 °C | 210 °C |
| 475 °F | 245 °C | 225 °C |
| 500 °F | 260 °C | 240 °C |
Gas mark to Celsius and Fahrenheit
Gas marks are used in British and Irish recipes.
| Gas mark | Celsius | Celsius, fan oven | Fahrenheit |
|---|---|---|---|
| Gas mark 1 | 140 °C | 120 °C | 275 °F |
| Gas mark 2 | 150 °C | 130 °C | 300 °F |
| Gas mark 3 | 170 °C | 150 °C | 325 °F |
| Gas mark 4 | 180 °C | 160 °C | 350 °F |
| Gas mark 5 | 190 °C | 170 °C | 375 °F |
| Gas mark 6 | 200 °C | 180 °C | 400 °F |
| Gas mark 7 | 220 °C | 200 °C | 425 °F |
| Gas mark 8 | 230 °C | 210 °C | 450 °F |
| Gas mark 9 | 240 °C | 220 °C | 475 °F |
Published gas mark charts differ by up to 10 °C around marks 2, 3 and 7. If your recipe gives both, trust the Celsius.
Fan, convection and conventional ovens
A fan oven (called a convection oven in the US, or fan-forced in Australia) blows hot air around the food. It cooks faster and more evenly, so it needs about 20 °C less heat than a conventional oven. In Fahrenheit, that’s about 25 °F.
Recipes from the US and Canada almost always assume a conventional oven. UK and Australian recipes often print both settings, for example “180 °C, 160 °C fan”.
The adjustment is for oven heat only. A target temperature for food, such as 165 °F (74 °C) for cooked chicken, stays the same.
In Spices, set your oven once
Tell Spices whether your oven is fan or conventional, and every saved recipe shows temperatures for it. “Bake at 350 °F” reads 155 °C fan, and gas marks convert too. Food temperatures convert to plain Celsius, without the fan adjustment.
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- US and UK ingredient namesHeavy cream is double cream and cilantro is coriander. 34 names, with Dutch too.
Questions
What is 350 °F in Celsius?
350 °F is 177 °C, which recipes round to 175 or 180 °C. In a fan (convection) oven, use about 155 to 160 °C.
How much lower should a fan oven be?
Set a fan oven about 20 °C (25 °F) lower than a conventional oven. Fan ovens move hot air around the food, so they cook faster at the same setting. Check your oven’s manual, as some adjust automatically.
What is gas mark 4 in Celsius?
Gas mark 4 is 180 °C, 160 °C in a fan oven, or 350 °F. It is the most common baking temperature in British recipes.
Does a US recipe’s temperature assume a fan oven?
Usually not. US recipes are written for conventional ovens, so lower the temperature if your oven is fan-assisted. Many UK and Australian recipes give both.
Let your recipes convert themselves
Spices shows every saved recipe in the units, oven setting and ingredient names you use, and you can switch back to the original at any time. In testing for iPhone and iPad.