Fan to conventional oven temperature

Some recipes give only the fan temperature; add the difference to know what to set in a conventional oven.

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How to use it

  1. Enter fan oven temperature, temperature unit and difference (leave empty for the usual value).
  2. The result appears straight away and updates as you edit.
  3. Copy the result, or copy a link that keeps the same values to share it.

How it is calculated

Conventional temperature = fan temperature + difference; the usual difference is 20 °C or 25 °F.

Example

Inputs: Fan oven temperature = 180, Temperature unit = Celsius (°C). Result: Conventional oven temperature: 200 °C; In the other unit: 392 °F; Difference used: 20 °C.

Limits and caveats

  • The 20 °C difference is common guidance; your oven may need a slightly different one.
  • Conventional ovens are hotter near the top and bottom, so bake on the middle shelf.

Questions about this tool

What is 160 °C fan in a conventional oven?

About 180 °C, adding 20 degrees.

How do I know a recipe means a fan oven?

British recipes usually write "fan" next to the temperature, such as 160 °C fan. If nothing is said, it is usually conventional.

Should I change the baking time too?

Usually not, but test a cake with a skewer a few minutes before the end.