Quick answer: To convert an oven temperature from Celsius to Fahrenheit, multiply by 9, divide by 5 and add 32. So 180°C is 356°F, which American recipes round to 350°F, and 200°C is 392°F, usually written as 400°F. US ovens are set in 25°F steps, so match your figure to the nearest one.
British and American cooks use the same ovens but label them differently, and a 30°F slip can be the difference between a golden crust and a scorched one. This chart covers the full cooking range in both directions. For the wider picture of spoons, cups and grams, start with the UK cooking measurements hub.
What is the formula for Celsius to Fahrenheit?
°F = (°C × 9 ÷ 5) + 32. The two scales have different zero points (water freezes at 0°C and 32°F) and different step sizes (100 Celsius degrees span the same range as 180 Fahrenheit degrees), which is why you need both the multiplication and the addition.
Worked example for a Sunday roast at 190°C: 190 × 9 = 1,710; 1,710 ÷ 5 = 342; 342 + 32 = 374°F. An American oven dial would be set to 375°F. To go the other way, use °C = (°F − 32) × 5 ÷ 9, or let the Celsius to Fahrenheit converter do the arithmetic.
Celsius to Fahrenheit oven temperature chart
Each 10°C step on a UK oven is an 18°F step on an American one. The middle column gives the exact conversion; the gas mark column shows where a traditional setting matches; and the last column is the fan setting that gives a similar result to the conventional temperature in that row.
| Conventional °C | Exact °F | Gas mark | Fan °C for the same bake |
|---|---|---|---|
| 100°C | 212°F | — | 80°C |
| 110°C | 230°F | ¼ | 90°C |
| 120°C | 248°F | ½ | 100°C |
| 130°C | 266°F | — | 110°C |
| 140°C | 284°F | 1 | 120°C |
| 150°C | 302°F | 2 | 130°C |
| 160°C | 320°F | — | 140°C |
| 170°C | 338°F | 3 | 150°C |
| 180°C | 356°F | 4 | 160°C |
| 190°C | 374°F | 5 | 170°C |
| 200°C | 392°F | 6 | 180°C |
| 210°C | 410°F | — | 190°C |
| 220°C | 428°F | 7 | 200°C |
| 230°C | 446°F | 8 | 210°C |
| 240°C | 464°F | 9 | 220°C |
| 250°C | 482°F | — | 230°C |
| 260°C | 500°F | — | 240°C |
What are American oven temperatures in Celsius?
American recipes almost always use multiples of 25°F, from 225°F to 500°F. Use this reverse chart when you are working from a US cookbook or website. The UK setting column shows the figure most British charts use for the same job, and the fan column takes a further 20°C off.
| US recipe °F | Exact °C | Usual UK setting | Fan oven |
|---|---|---|---|
| 225°F | 107.2°C | 110°C | 90°C |
| 250°F | 121.1°C | 120°C | 100°C |
| 275°F | 135.0°C | 140°C | 120°C |
| 300°F | 148.9°C | 150°C | 130°C |
| 325°F | 162.8°C | 160–170°C | 140–150°C |
| 350°F | 176.7°C | 180°C | 160°C |
| 375°F | 190.6°C | 190°C | 170°C |
| 400°F | 204.4°C | 200°C | 180°C |
| 425°F | 218.3°C | 220°C | 200°C |
| 450°F | 232.2°C | 230°C | 210°C |
| 475°F | 246.1°C | 240°C | 220°C |
| 500°F | 260.0°C | 260°C | 240°C |
Two rows need a word of explanation. At 325°F the exact figure, 162.8°C, sits halfway between two round numbers, so British charts disagree on 160°C or 170°C. At 475°F the gas mark 9 convention of 240°C is a touch below the exact 246.1°C. In both cases, either setting will work; just keep an eye on colour near the end of cooking.
Why does “double it and add 30” not work for ovens?
The shortcut is close for weather but drifts badly at oven heat. It doubles instead of multiplying by 1.8, so the error grows by 0.2°F for every degree Celsius. At 20°C it gives 70°F against a true 68°F, which is fine for deciding on a coat. At 180°C it gives 390°F against a true 356°F, a 34°F overshoot that would brown a sponge long before the centre set.
For quick mental conversions in the kitchen, it is easier to memorise four anchor points and work from them: 150°C ≈ 300°F, 180°C ≈ 350°F, 200°C ≈ 400°F and 220°C ≈ 425°F.
Do Fahrenheit recipes assume a fan oven?
Usually not. American recipes generally give a conventional temperature, and US cooks who use a convection (fan) setting are typically told to lower it themselves. So convert the Fahrenheit figure to Celsius first, then follow the fan oven temperature conversion rule of subtracting about 20°C. A 350°F cake therefore goes in at 180°C conventional or 160°C fan, as covered in the explainer on gas mark 4 in a fan oven.
Frequently asked questions
What is 180°C in Fahrenheit for an oven?
180°C is exactly 356°F. American recipes and oven dials round this to 350°F, which is also gas mark 4.
What is 200°C in Fahrenheit?
200°C is exactly 392°F. Set an American oven to 400°F, which is gas mark 6.
What is 350°F in Celsius?
350°F is 176.7°C. Use 180°C in a conventional oven or 160°C in a fan oven.
What is 425°F in Celsius?
425°F is 218.3°C. Use 220°C in a conventional oven, 200°C fan, or gas mark 7.
How do I convert Fahrenheit to Celsius in my head?
Subtract 32, then halve the result and add a tenth of that half back on. For 350°F: 350 minus 32 is 318, half is 159, plus 15.9 gives about 175°C, close to the exact 176.7°C.
Sources
- NIST Office of Weights and Measures: US customary to metric conversions, including the temperature formula
- Which?: oven temperature conversion (Celsius, Fahrenheit, gas mark and fan)
- BIPM: the International System of Units, which defines the kelvin, the basis of the degree Celsius