Oven Temperature Converter
Convert oven temperatures between Fahrenheit, Celsius, Gas Mark, and fan-forced convection.
Includes a baking temperature reference table from 250F to 500F.
Type in any field — the others update instantly.
Oven temperature scales differ around the world — and even between oven types. Here is how they all relate to each other.
Fahrenheit ↔ Celsius: °C = (°F − 32) × 5/9
Gas Mark (UK/Ireland): Gas Mark is used on British and Irish gas ovens. Gas Mark 1 = approximately 275°F (140°C). Each mark increases by roughly 25°F (14°C).
Fan / Convection ovens: Fan ovens circulate hot air, making them more efficient. They typically run 20°C (about 35°F) hotter than conventional ovens. Always reduce the temperature by 20°C when using a fan/convection oven recipe in a conventional oven, or vice versa.
Gas Mark Reference Table:
| Gas Mark | °F | °C | Fan °C | Description |
|---|---|---|---|---|
| Gas 1 | 275°F | 140°C | 120°C | Very Cool |
| Gas 2 | 300°F | 150°C | 130°C | Cool |
| Gas 3 | 325°F | 165°C | 145°C | Warm |
| Gas 4 | 350°F | 180°C | 160°C | Moderate |
| Gas 5 | 375°F | 190°C | 170°C | Moderately Hot |
| Gas 6 | 400°F | 200°C | 180°C | Hot |
| Gas 7 | 425°F | 220°C | 200°C | Hot |
| Gas 8 | 450°F | 230°C | 210°C | Very Hot |
| Gas 9 | 475°F | 245°C | 225°C | Very Hot |
Common baking temperatures:
- Cheesecake: 325°F / 165°C / Gas 3
- Cookies: 350°F / 180°C / Gas 4
- Roast chicken: 375°F / 190°C / Gas 5
- Pizza: 450–500°F / 230–260°C / Gas 8–9
How we build and check this converter
This converter runs entirely in your browser, so the numbers you enter stay on your device. The math behind it is written by hand and tested against worked examples and standard references before the page goes live.
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