Gas Mark to Fan Oven Celsius Converter
Instantly convert Gas Mark to Fan Oven Celsius (°C) and Fahrenheit (°F). Accurate, free baking temperature calculator for recipes and ovens.
Calculate Your Oven Temperature
Enter your recipe’s Gas Mark below to get an instant, precise conversion to Fan Oven Celsius (°C), Conventional Celsius, and Fahrenheit (°F).
Temperature Converter
Enter the Gas Mark to see the fan oven equivalent
Typically ranges from 1/4 to 9 for most baking and roasting
Formula: Fan °C ≈ Conventional °C – 20
Converted Temperatures
Based on standard UK culinary conversion charts
Gas Mark Temperature Reference Chart
Standard oven temperature conversions used in UK recipes, baking guides, and culinary instruction.
| Gas Mark | Fan Oven (°C) | Conventional (°C) | Fahrenheit (°F) |
|---|---|---|---|
| ¼ | 110°C | 130°C | 250°F |
| ½ | 120°C | 140°C | 275°F |
| 1 | 130°C | 150°C | 300°F |
| 2 | 140°C | 160°C | 320°F |
| 3 | 150°C | 170°C | 325°F |
| 4 | 160°C | 180°C | 350°F |
| 5 | 170°C | 190°C | 375°F |
| 6 | 180°C | 200°C | 400°F |
| 7 | 200°C | 220°C | 425°F |
| 8 | 210°C | 230°C | 450°F |
| 9 | 220°C | 240°C | 475°F |
Oven Temperature Conversion FAQ
Everything you need to know about converting Gas Mark to Celsius and getting the perfect bake.
To convert Gas Mark to Fan Oven Celsius, you can use a standard conversion chart. As a general rule, a fan oven runs about 20°C cooler than a conventional oven. For example, Gas Mark 4 is 180°C in a conventional oven, which converts to 160°C in a fan oven.
Gas Mark 4 is equivalent to 160°C in a fan oven, 180°C in a conventional oven, and 350°F. This is the most common temperature used for baking cakes, cookies, and roasting meats.
A fan oven uses a fan to circulate hot air around the food, cooking it faster and more evenly. Because of this efficient heat distribution, you typically need to reduce the temperature by 20°C compared to a conventional (static) oven recipe.
Gas Mark is a traditional temperature scale that was introduced in the UK in 1943. While Celsius is now the standard metric unit, Gas Mark remains widely used in older British recipes and is still featured on the dials of many gas ovens today.