Oven Temperature Converter
Convert any oven temperature between Fahrenheit, Celsius and gas mark, and find the right setting for a fan (convection) oven.
Oven temperature chart
| °F | °C | Fan °C | Gas mark | Description |
|---|---|---|---|---|
| 225 | 110 | 90 | ¼ | Very low |
| 250 | 120 | 100 | ½ | Very low |
| 275 | 140 | 120 | 1 | Low |
| 300 | 150 | 130 | 2 | Low |
| 325 | 170 | 150 | 3 | Moderately low |
| 350 | 180 | 160 | 4 | Moderate |
| 375 | 190 | 170 | 5 | Moderately hot |
| 400 | 200 | 180 | 6 | Hot |
| 425 | 220 | 200 | 7 | Hot |
| 450 | 230 | 210 | 8 | Very hot |
| 475 | 240 | 220 | 9 | Very hot |
| 500 | 260 | 240 | 10 | Extremely hot |
Celsius values are the conventional recipe equivalents, rounded to the nearest 10 °C (so 350 °F is written as 180 °C, although the exact conversion is 176.7 °C).
The formulas
- Fahrenheit to Celsius: °C = (°F − 32) × 5 ÷ 9
- Celsius to Fahrenheit: °F = °C × 9 ÷ 5 + 32
- Conventional to fan oven: subtract about 20 °C (25 °F)
Fan and convection ovens
A fan oven blows hot air around the food, which strips away the cooler layer of air that normally surrounds it. Food cooks faster and browns more, so recipes written for conventional ovens need a lower setting. The usual rule is 20 °C (25 °F) lower. Many UK recipes list both numbers, such as "180 °C / 160 °C fan".
Some modern convection ovens make this adjustment for you. Check your manual for "convection conversion" or "auto-convert" before subtracting it yourself, or you'll end up 25 °F too low. For delicate bakes like soufflés, custards and some cakes, many bakers switch the fan off entirely.
Is your oven telling the truth?
Home ovens are often off by 25 °F (about 15 °C) or more, and they cycle above and below the set temperature. An inexpensive oven thermometer on the middle rack is the best way to know what you're really baking at. If your bakes brown too fast or stay pale no matter what the recipe says, check this first.
Frequently asked questions
What is 350 °F in Celsius?
176.7 °C exactly, usually written as 180 °C (gas mark 4), or 160 °C in a fan oven.
What is 180 °C in Fahrenheit?
356 °F, which is set as 350 °F on a US oven.
What gas mark is 200 °C?
Gas mark 6 (about 400 °F).
Do I need to change the baking time for a fan oven?
If you lower the temperature by 20 °C / 25 °F, the time stays about the same. Start checking a few minutes early the first time you bake something.