180°C Fan = 400°F Conventional Oven (200°C Non-Fan)
180°C Fan equals 400°F (200°C) in a conventional non-fan oven (or UK Gas Mark 6), applying the standard +20°C (+25°F to +35°F) static oven thermal offset for hot baking and roasting of convection roasted chicken and fan-assisted golden roast potatoes.
180°C Fan is equivalent to 200°C conventional oven heat, which translates to 392°F–400°F (Gas Mark 6). The circulating fan continuously sweeps away cool moisture boundaries.
Oven Thermal Zone Spectrum400°F • Gas Mark 6 • Hot
Slow / Low225–300°F • GM ½–2
Moderate Bake325–375°F • GM 3–5
Hot Roast400–450°F • GM 6–8
Pizza / Broil475°F+ • GM 9–10
Conventional °F
400°F
Exact: 392°F
Conventional °C
200°C
Exact: 200°C
Convection / Fan
180°C Fan
375°F (−25°F)
UK Gas Mark
Gas Mark 6
Hot
International Oven Dial & UK Gas Mark Reference
| Static °F | Static °C | Fan °C | Gas Mark | Heat Zone |
|---|---|---|---|---|
| 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 |
Frequently Asked Questions
What is 180°C Fan in Fahrenheit and conventional Celsius? ▾
180°C Fan equals 200°C conventional oven heat or approximately 392°F–400°F (UK Gas Mark 6).
Why does fan baking cook faster than conventional? ▾
The fan creates forced convection, stripping the insulating layer of cooler air from food surfaces and accelerating heat transfer by 20% to 25%.