Oven Temperature Converter
Convert oven temperatures between Fahrenheit, Celsius, fan Celsius and gas mark, with a full reference chart.
Fan (convection) ovens are typically run about 20°C / 20-25°F cooler than a conventional oven at the same setting — use the fan column above, or lower a conventional recipe's temperature if baking with fan assist.
Oven Temperature Conversion Chart
Use this chart for gas and electric oven temperatures. It covers Fahrenheit, Celsius, fan-assisted Celsius, and gas mark, with a rough description of how hot each setting actually feels. Temperatures can vary slightly between ovens, brands, altitude, and even how well-calibrated your particular oven is — if a dish consistently comes out under or over-baked, it's worth checking your oven's true temperature with a separate oven thermometer.
| Gas Mark | Fahrenheit | Celsius | Celsius (fan) | Heat |
|---|---|---|---|---|
| 1/4 | 225°F | 110°C | 100°C | Very slow |
| 1/2 | 250°F | 120°C | 110°C | — |
| 1 | 275°F | 135°C | 125°C | Slow |
| 2 | 300°F | 150°C | 140°C | — |
| 3 | 325°F | 165°C | 150°C | Moderately slow |
| 4 | 350°F | 180°C | 160°C | Moderate |
| 5 | 375°F | 190°C | 170°C | — |
| 6 | 400°F | 205°C | 185°C | Moderately hot |
| 7 | 425°F | 220°C | 200°C | Hot |
| 8 | 450°F | 230°C | 210°C | — |
| 9 | 475°F | 245°C | 225°C | Very hot |
| 10 | 500°F | 260°C | 240°C | Extremely hot |
If you're baking with an air fryer rather than an oven, temperatures and times don't convert directly — air fryers typically need a lower temperature and shorter time than a conventional oven recipe.
Worldwide Oven Temperature Conventions
In the United States, recipes almost always give oven temperature in Fahrenheit. Across the UK, Australia, and much of the rest of the world, you'll see a mix of Celsius and gas mark instead — older British recipes in particular tend to favor gas mark. Knowing how to move between all three means you're never stuck converting a recipe from a source that uses a different system than your oven's dial.
A Common Conversion: 350°F
"Preheat your oven to 350°F" is probably the single most common instruction in baking — it's often called the default or "safe" baking temperature. Here's how it lines up across every system:
| Fahrenheit | Gas Mark | Celsius (rounded) | Celsius (fan) |
|---|---|---|---|
| 350°F | 4 | 180°C | 160°C |
Frequently Asked Questions
What temperature is 350°F in Celsius?
350°F is 177°C (157°C in a fan oven), roughly Gas Mark 4.
Why is my fan oven temperature lower than the Celsius conversion?
Fan (convection) ovens circulate hot air, which cooks food faster and more evenly, so most guidance recommends setting a fan oven about 20°C (or 20-25°F) cooler than a conventional oven recipe would call for.
Can I use this to convert air fryer temperatures?
Not directly — air fryers cook faster and more intensely than a full-size oven due to their small size and strong air circulation, so a recipe written for an oven usually needs both a lower temperature and a shorter time in an air fryer.