The full oven temperature chart
| Gas mark | °F | °C (conventional) | °C (fan) |
|---|---|---|---|
| ¼ | 225 | 110 | 90 |
| ½ | 250 | 120 | 100 |
| 1 | 275 | 140 | 120 |
| 2 | 300 | 150 | 130 |
| 3 | 325 | 160 | 140 |
| 4 | 350 | 180 | 160 |
| 5 | 375 | 190 | 170 |
| 6 | 400 | 200 | 180 |
| 7 | 425 | 220 | 200 |
| 8 | 450 | 230 | 210 |
| 9 | 475 | 240 | 220 |
Gas-mark Celsius figures are rounded to the nearest 10 °C — gas mark 3 is 165 °C exactly, rounded to 160 °C here. Fan figures are the conventional temperature minus 20 °C. Oven thermostats can be off by 10–20 °C, so for precise baking an oven thermometer beats any chart.
Common temperatures at a glance
- Slow cooking / proving dough: gas mark ¼–1 (110–140 °C / 225–275 °F)
- Cakes, bakes, roast chicken: gas mark 4 (180 °C / 350 °F; fan 160 °C)
- Pastry, tray bakes, roast veg: gas mark 6 (200 °C / 400 °F; fan 180 °C)
- Pizza, flatbreads, crisping: gas mark 8–9 (230–240 °C / 450–475 °F; fan 210–220 °C)
How to convert oven temperatures yourself
Fahrenheit to Celsius: °C = (°F − 32) × 5⁄9. For 425 °F: (425 − 32) × 5⁄9 ≈ 218 °C — the chart rounds it to 220 °C (gas mark 7). Celsius to Fahrenheit: °F = °C × 9⁄5 + 32. For 200 °C: 200 × 9⁄5 + 32 = 392 °F — close enough to 400 °F (gas mark 6) for real ovens.
Gas marks are the awkward one: the scale isn't evenly spaced, so a chart like this beats a formula. And fan ovens: subtract 20 °C from the conventional temperature, not from the fan figure.
For the rest of the kitchen — cups, tablespoons, grams — see our kitchen conversion chart, or convert any figure with the Fahrenheit to Celsius converter.