Gas mark 4
180°C · 350°F · 160°C fan
Moderate oven — the default for cakes, biscuits and most baking.
Gas mark 4 in every scale
| Gas mark | 4 |
| Fahrenheit | 350°F (exact — gas mark 4 is defined as this) |
| Celsius, conventional oven | 180°C (the arithmetic conversion is 176.7°C; recipes round it) |
| Celsius, fan oven | 160°C |
| Fahrenheit, fan oven | 320°F |
| Description | Moderate |
Frequently asked questions
What is gas mark 4 in Celsius?
180°C in a conventional oven, or 160°C in a fan oven.
What is gas mark 4 in Fahrenheit?
350°F, exactly — gas mark 4 is defined as 350°F.
Why is gas mark 4 called 180°C when 350°F is 176.7°C?
Because 176.7°C is not a number an oven dial can be set to. Recipes round to the nearest ten, and the rounded figure is the convention everywhere — the 3.3 degree difference is well inside the accuracy of a domestic thermostat.
What is gas mark 4 used for?
Moderate — the default for cakes, biscuits and most baking.
The settings either side
| Gas mark | Fahrenheit | Celsius | Fan / convection | |
|---|---|---|---|---|
| 3 | 325°F | 170°C | 150°C fan | Warm |
| 4 | 350°F | 180°C | 160°C fan | Moderate |
| 5 | 375°F | 190°C | 170°C fan | Moderately hot |
The full chart, and why the three scales disagree →
The other gas marks
- Gas mark 5 — 190°C, 375°F
- Gas mark 6 — 200°C, 400°F
- Gas mark 7 — 220°C, 425°F
- Gas mark 8 — 230°C, 450°F
- Gas mark 9 — 240°C, 475°F
- Gas mark 1/4 — 110°C, 225°F
- Gas mark 1/2 — 130°C, 250°F
- Gas mark 1 — 140°C, 275°F
All oven temperatures · 180°C to °F precisely · Cooking measurements