Gas Mark conversion
Gas Mark 8 in °C & °F
Gas Mark 8 is 230°C or 450°F, a hot oven. In a fan oven, use 210°C.
Gas Mark 8 equals
230°C
450°F · exactly 232.2°C
What Gas Mark 8 is used for
Hot
Gas Mark 8 is 230°C (450°F), a hot oven for pizza, flatbreads and the first blast of heat for crusty bread.
Why charts differ slightly
From Gas Mark 1 upwards, each mark is 25°F hotter than the one before, starting at 275°F. Gas Mark 8 is 450°F, which is exactly 232.2°C. UK recipe charts round this to the nearest 10°C oven setting, which gives 230°C. Small differences between charts (for example 160°C or 170°C for Gas Mark 3) come from that rounding, and they rarely matter in practice.
Gas ovens are hotter near the top than at the bottom, so the gas mark is meant for the middle shelf. Fan ovens heat more evenly, which is why they need a lower setting.
Convert another temperature
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All gas marks
| Gas Mark | °C | °F | Fan °C |
|---|---|---|---|
| Gas Mark ¼ | 110°C | 225°F | 90°C |
| Gas Mark ½ | 120°C | 250°F | 100°C |
| Gas Mark 1 | 140°C | 275°F | 120°C |
| Gas Mark 2 | 150°C | 300°F | 130°C |
| Gas Mark 3 | 160°C | 325°F | 140°C |
| Gas Mark 4 | 180°C | 350°F | 160°C |
| Gas Mark 5 | 190°C | 375°F | 170°C |
| Gas Mark 6 | 200°C | 400°F | 180°C |
| Gas Mark 7 | 220°C | 425°F | 200°C |
| Gas Mark 8 | 230°C | 450°F | 210°C |
| Gas Mark 9 | 240°C | 475°F | 220°C |
See the full gas mark chart with exact values, or print the whole conversion chart.
Common questions
What temperature is Gas Mark 8?
Gas Mark 8 is 230°C or 450°F (exactly 232.2°C).
What is Gas Mark 8 in a fan oven?
Use 210°C in a fan oven, which is 20°C below the conventional 230°C.
What is Gas Mark 8 in Fahrenheit?
Gas Mark 8 is 450°F. Gas marks were defined in Fahrenheit, so this is the exact figure.
Is Gas Mark the same on every gas oven?
The scale is standard, but individual ovens vary, and gas ovens are hotter at the top than the bottom. Cook on the middle shelf, and use an oven thermometer if your results are often off.