Oven Temperature Converter
Convert oven settings between Celsius, Fahrenheit and gas mark, with fan-oven adjustment.
About the Oven Temperature Converter
°F = °C × 9/5 + 32. UK gas marks map to standard temperatures, from gas ¼ (110 °C) to gas 9 (240 °C). Fan (convection) ovens cook faster, so recipes usually lower the temperature by about 20 °C (25 °F).
The formula
°F = °C × 9 ÷ 5 + 32
Gas marks
| Gas mark | °C | °F |
|---|---|---|
| ¼ | 110 | 225 |
| ½ | 120 | 250 |
| 1 | 140 | 275 |
| 2 | 150 | 300 |
| 3 | 170 | 325 |
| 4 | 180 | 350 |
| 5 | 190 | 375 |
| 6 | 200 | 400 |
| 7 | 220 | 425 |
| 8 | 230 | 450 |
| 9 | 240 | 475 |
Worked example
Example: Converted = 199 °C · 390 °F · gas 6
- Inputs: From: °F; Temperature or gas mark: 390.
- Formula: °F = °C × 9 ÷ 5 + 32
- Result: Converted = 199 °C · 390 °F · gas 6
Questions people ask
Is my oven accurate?
Many ovens are off by 10–20 °C; an oven thermometer helps.
Should I reduce time in a fan oven?
Sometimes slightly; check a little early.