Oven Temperature & Air Fryer Converter
Convert Fahrenheit (°F), Celsius (°C), Convection Fan (-20°C / -25°F), and UK Gas Marks instantly, or convert conventional oven recipes to Air Fryer time (-20%) and temperature (-25°F) across 25 tested kitchen food presets.
Master Oven Dial & UK Gas Mark Reference Chart
Convection Fan Guide →| Conventional °F | Conventional °C | Fan / Convection °C | UK Gas Mark | Heat Level |
|---|---|---|---|---|
| 225°F | 110°C | 90°C Fan | Gas Mark ¼ | Very Cool / Drying & Meringues |
| 250°F | 120°C | 100°C Fan | Gas Mark ½ | Very Slow / Slow Braising |
| 275°F | 140°C | 120°C Fan | Gas Mark 1 | Slow / Custards & Rich Fruitcakes |
| 300°F | 150°C | 130°C Fan | Gas Mark 2 | Slow–Moderate / Casseroles & Shortbread |
| 325°F | 165°C | 145°C Fan | Gas Mark 3 | Moderate / Cheesecakes & Loaf Cakes |
| 350°F | 180°C | 160°C Fan | Gas Mark 4 | Moderate / Everyday Baking, Cookies & Layer Cakes |
| 375°F | 190°C | 170°C Fan | Gas Mark 5 | Moderately Hot / Pies, Muffins & Roasting |
| 400°F | 200°C | 180°C Fan | Gas Mark 6 | Hot / Crispy Roasting, Puff Pastry & Scones |
| 425°F | 220°C | 200°C Fan | Gas Mark 7 | Hot / Artisan Bread, Roasted Veg & Yorkshire Pudding |
| 450°F | 230°C | 210°C Fan | Gas Mark 8 | Very Hot / Hearth Loaves & High-Heat Roasting |
| 475°F | 245°C | 225°C Fan | Gas Mark 9 | Very Hot / Dutch-Oven Sourdough & Skillet Sear |
| 500°F | 260°C | 240°C Fan | Gas Mark 10 | Extremely Hot / Pizza Stone & Flatbreads |
Oven Temperature Conversions
Frequently Asked Questions
How do you convert a conventional oven recipe to a convection (fan) oven? ▾
Reduce the conventional oven temperature by 25°F (in the US) or 20°C (in UK/EU fan ovens) and check baked goods 5 to 8 minutes before the minimum recipe time. Moving hot air strips away the insulating boundary layer around pans, accelerating browning and moisture evaporation.
What is the standard Oven-to-Air-Fryer conversion rule? ▾
Lower the oven recipe temperature by 25°F (about 15°C) and reduce the cook time by 20%. Shake the basket or flip proteins halfway through cooking, and avoid wet tempura batters or loose leafy greens that can blow into the heating coil.
What is Gas Mark 4 in Fahrenheit and Celsius? ▾
UK Gas Mark 4 equals 350°F, 180°C in a conventional static oven, or 160°C in a fan/convection oven — the universal "moderate" baking temperature for cookies, cakes, and brownies.