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Κουζίνα & Μαγειρική4 min•2026-10-29•Compute-Hub Culinary Desk
Oven Temperature Conversion Guide: Fan, Conventional & Gas Mark
Never burn or undercook food again when converting between Celsius, Fahrenheit, and Fan ovens.
Key Takeaways
- Fan ovens circulate hot air more efficiently, so reduce temperature by 20°C (approx. 25°F-50°F) compared to conventional ovens.
- Fahrenheit to Celsius conversion formula: °C = (°F – 32) × 5/9.
- Gas Mark 4 equals 180°C (350°F) conventional, or 160°C fan oven.
- Baking delicate pastries requires precise temperature accuracy; an oven thermometer is highly recommended.
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Why Fan Ovens Run Hotter
Convection ovens use an internal fan to distribute heat evenly and eliminate cold spots. Because hot air moves continuously across the food, cooking happens faster and moisture evaporates more rapidly.
Mathematical Formula:Fan Oven Temp (°C) = Conventional Temp (°C) – 20°C
💡 Practical Real-World Example:A recipe calling for 200°C (400°F) conventional should be baked at 180°C in a fan oven.
Standard Cooking Benchmark Equivalents
Low / Slow (Gas Mark 2): 150°C / 300°F.
Moderate (Gas Mark 4): 180°C / 350°F.
Hot (Gas Mark 6): 200°C / 400°F.
Very Hot (Gas Mark 8): 230°C / 450°F.
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Frequently Asked Questions
FAQ: Oven Temperature Conversion Guide: Fan, Conventional & Gas Mark
Should I adjust cooking time as well as temperature for fan ovens?
Usually, lowering temperature by 20°C keeps cooking time the same. For quick-baking items (cookies, biscuits), reduce baking time by 5-10 minutes.
Where can I convert oven temperatures instantly?
Check Compute-Hub’s Oven Temperature Converter for instant reciprocal conversions.