Fan vs Conventional Oven Temperature Converter
Fan-forced (convection) ovens cook ~25 °F (~14 °C) hotter than conventional. Convert in either direction.
Result
Fan-oven temp
375 °F
Lower by 25 °F.
- Input modeConventional → Fan
- Input temperature400 °F
- Adjustment−25 °F
- Output375 °F
Step-by-step
- Fan ovens move air faster, so the food sees a higher effective heat.
- Standard adjustment: 25 °F.
- Result = 400 − 25 = 375 °F.
How to use this calculator
- Pick direction.
- Enter recipe temperature.
- Adjust your oven dial accordingly.
- Reduce time by 10-15% on fan setting too.
About this calculator
A fan-forced (convection) oven circulates hot air, so heat reaches the food faster than in a still-air conventional oven. The standard adjustment: drop 25 °F (14 °C) when converting a conventional recipe to a fan oven, or add 25 °F when going the other way. Some manufacturers recommend −20 °F or −30 °F — check yours. Cooking time also drops 10-25% with fan because faster surface drying and even heat. Some delicate items (custards, cheesecakes) may need fan turned off entirely — they're happier with still air.
Frequently asked
Faster air movement means stronger convection — heat transfer to food surface is higher than in still air. Same dial setting cooks faster.
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