180 °C conventional
356 °F, 160 °C in a fan oven, gas mark 4.
Oven temperature converter
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A fan (convection) oven runs about 20 °C (25 °F) hotter than a conventional one, so the fan setting is 20 °C lower. Gas marks are matched to the nearest standard mark.
I have a temperature in
For gas marks, 1/4 and 1/2 can be typed as 0.25 and 0.5.
The recipe temperature is for
Conventional oven
180 °C / 356 °F
Use 160 °C in a fan oven. The nearest gas mark is 4 (moderate).
- Celsius
- 180 °C
- Fahrenheit
- 356 °F
- Fan oven
- 160 °C
- Gas mark
- 4
Oven temperature chart
| Gas mark | °F | °C | Fan °C | Oven |
|---|---|---|---|---|
| 1/4 | 225 | 110 | 90 | Very cool |
| 1/2 | 250 | 120 | 100 | Very cool |
| 1 | 275 | 140 | 120 | Cool |
| 2 | 300 | 150 | 130 | Cool |
| 3 | 325 | 170 | 150 | Warm |
| 4 | 350 | 180 | 160 | Moderate |
| 5 | 375 | 190 | 170 | Moderately hot |
| 6 | 400 | 200 | 180 | Hot |
| 7 | 425 | 220 | 200 | Hot |
| 8 | 450 | 230 | 210 | Very hot |
| 9 | 475 | 240 | 220 | Very hot |
Reading any recipe's oven temperature
Recipes from the US give Fahrenheit, recipes from Europe give Celsius, and older British recipes give gas marks. The conversion between Celsius and Fahrenheit is a simple formula: multiply by 9, divide by 5 and add 32.
So 180 °C is 356 °F. Recipes round it to 350 °F because ovens are not that precise anyway. The nearest gas mark is 4, which is called a moderate oven. If you have a fan oven, set it to 160 °C, because the moving air cooks food faster.
Gas marks do not follow a neat formula at the low end, so the tool uses the standard chart. Gas mark 1 is 140 °C, each mark from 2 to 9 is about 10 to 15 °C more, and gas mark 9 is 240 °C. The full chart is shown under the result.
Ovens are often 10 to 20 °C off their dial. If your bakes keep coming out too dark or too pale, an oven thermometer will tell you more than any conversion chart.
Sources
What this calculator does not account for
- Real ovens often run 10 to 20 °C off the dial.
- Fan reduction is a rule of thumb.
How this is calculated
Formula: Celsius and Fahrenheit
°F =°C × 9 ÷ 5 + 32; fan °C =°C − 20What the symbols mean
- °CDegrees Celsius for a conventional oven.
- fan °CA fan (convection) oven cooks hotter, so it is set about 20 °C lower.
Good to know
- Gas marks are matched to the nearest standard mark in the chart.
- For an air fryer, use the air fryer converter.
Read the full methodologyFound an error? Contact us
Worked examples
Each example is worked out by the same code as the calculator above.
Gas mark 6
200 °C or 400 °F, 180 °C in a fan oven.
Embed this calculator
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<iframe src="/embed/oven-temperature-converter" title="Oven temperature" width="100%" height="720" style="border:0;max-width:42rem" loading="lazy"></iframe>Questions
What is 180 °C in Fahrenheit?
356 °F, which recipes usually round to 350 °F. That is gas mark 4.
What is 350 °F in Celsius?
About 177 °C, usually written as 180 °C, or 160 °C in a fan oven.
How much lower should a fan oven be?
About 20 °C (25 °F) lower than the conventional temperature in the recipe.
What temperature is gas mark 6?
200 °C or 400 °F.
Does the recipe mean fan or conventional?
If it does not say, assume conventional. Many UK recipes give both, like 180 °C (160 °C fan).