Cooking

Oven Temperature Calculator

Convert an oven setting between Celsius and Fahrenheit.

Free to use — no sign-up or login.

Converted temperature

A recipe printed in Celsius still has to meet a Fahrenheit dial. Pick the direction and type the number on the card. The result is the exact conversion, rounded to a whole degree.

An air fryer wants a lower setting than that oven number. The air fryer calculator takes the oven recipe and shortens it.

180°C and the 350°F habit

180 × 9/5 + 32 is 356. Many recipe writers still print 350°F for the setting they mean by 180°C. This page reports 356. The writer’s 350 is a rounded kitchen habit, not the formula.

Gas marks, written out

Gas mark 4 is the conventional 180°C. Gas mark 6 is the conventional 200°C, and gas mark 2 is the conventional 150°C. That 180°C label is not the same sentence as the exact 356°F result. The form has no gas-mark switch.

Worked example: 180°C

Direction Celsius to Fahrenheit, temperature 180. The converted temperature is 356°F.

\[ 180\times 9/5+32=356 \]

Frequently asked questions

Should I set the oven to 350 or 356?

356 is the exact conversion. A recipe that says 180°C / 350°F is using the common rounded pair. Follow the recipe’s own pair when it prints both.

Where is gas mark 4?

In the paragraph above, as a conventional label for 180°C. It is not a third mode in the form.

Does the page go from Fahrenheit back to Celsius?

Yes. Choose Fahrenheit to Celsius. 356°F returns 180°C.

Will my oven actually be 356 inside?

Not guaranteed. Home ovens run hot or cold. This is a unit change, not a reading from a thermometer.

Is a fan oven the same number?

The formula does not know about a fan. A fan oven is a recipe instruction, not a third temperature scale.

References

Assumptions and limitations

Ovens run hot or cold, and this is not a thermometer. Gas marks are a chart in the article, not a form setting. The result is a whole number of degrees.