Oven Temperature Converter

Convert oven temperatures between Celsius, Fahrenheit, gas mark and fan settings.

About Oven Temperature Converter

Fan ovens circulate air, transferring heat faster, so a 20 degree reduction achieves the same cooking rate. Gas marks step in roughly 14 degree increments from mark 1 at 135 Celsius. Ignoring the fan adjustment is the most common cause of over-browned baking, since the surface cooks well ahead of the interior.

Formula

Oven Temperature

F = C × 9/5 + 32; fan ovens run about 20 degrees cooler for the same effect

gas mark: British scale where mark 4 is about 180 Celsius
fan reduction: Forced air transfers heat faster, so the set temperature is lowered

Worked example

With the default values below, Oven Temperature Converter returns Temperature in Fahrenheit of 356.0. Change any input above and every figure here is recalculated in your browser.

Inputs used

Temperature in Celsiusaccepts -20–300 C: 180 C
Oven typeone of Conventional, Fan or convection: Conventional

Results

Temperature in Fahrenheit: 356.0 F
Gas Mark: 5.2
Fan Oven Equivalent: 160.0 C
Conventional Equivalent: 180.0 C
Descriptive Term: Moderate

Step by step

1Values used
2Oven Temperature
3Temperature in Fahrenheit= 356.0 F
4Gas Mark= 5.2
5Fan Oven Equivalent= 160.0 C
6Conventional Equivalent= 180.0 C
7Descriptive Term= Moderate

Assumptions and limits

The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is Oven Temperature calculated?

F = C × 9/5 + 32; fan ovens run about 20 degrees cooler for the same effect Fan ovens circulate air, transferring heat faster, so a 20 degree reduction achieves the same cooking rate. Gas marks step in roughly 14 degree increments from mark 1 at 135 Celsius.

Why does Oven Temperature matter?

Ignoring the fan adjustment is the most common cause of over-browned baking, since the surface cooks well ahead of the interior.

What values do I need to enter?

This calculator takes 2 inputs: Temperature in Celsius, Oven type. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.