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Food & Cooking

Verified calculator with a transparent formula

Food & Cooking

Oven Temperature Conversion Calculator.

Converts oven temperatures between Celsius, Fahrenheit, and Gas Mark.

Results update live as you type.
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Your inputs

How it works

  1. 1

    Enter the temperature in Celsius.

  2. 2

    The calculator converts to Fahrenheit using the formula F = C × 9/5 + 32.

  3. 3

    It also estimates the Gas Mark using a common approximation.

  4. 4

    Use the result to set your oven accordingly.

celsius * 9 / 5 + 32

Frequently asked questions

How do I convert Fahrenheit to Celsius?

Use the formula C = (F - 32) × 5/9. For example, 350°F is about 177°C.

What is a Gas Mark?

Gas Mark is a scale used on gas ovens in the UK and some other countries. It roughly corresponds to Celsius: Gas Mark = (C - 120) / 15.

Why are oven temperatures rounded?

Ovens are not perfectly precise, so recipes often round to the nearest 5 or 10 degrees. This calculator gives exact conversions, but you can round to a practical setting.

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Results

Formula checked

Fahrenheit

356°F

Gas Mark4
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Estimate for general guidance only — verify important decisions with an appropriate professional.

How it works

Converts oven temperatures between Celsius, Fahrenheit, and Gas Mark.

  1. Enter the temperature in Celsius.
  2. The calculator converts to Fahrenheit using the formula F = C × 9/5 + 32.
  3. It also estimates the Gas Mark using a common approximation.
  4. Use the result to set your oven accordingly.

Formulas

The math behind this calculator, written out so you can verify the result.

Celsius to Fahrenheit

F = C × 9/5 + 32

Multiply Celsius by 9, divide by 5, then add 32.

Example:

Input: C = 180

Calculation: 180 × 9/5 + 32 = 356

Result: 356°F

Celsius to Gas Mark

Gas Mark = (C - 120) / 15

A rough approximation used for gas ovens.

Example:

Input: C = 180

Calculation: (180 - 120) / 15 = 4

Result: Gas Mark 4

Real-world use cases

Where this calculation shows up in everyday life.

Adjusting recipes

Convert temperatures when using a recipe from a different country.

Example: A recipe says 200°C, but your oven uses Fahrenheit.

Setting gas ovens

Find the correct gas mark for a temperature given in Celsius.

Example: You need 180°C, which is Gas Mark 4.

Baking precision

Ensure your oven is set to the exact temperature for delicate bakes.

Example: Convert 170°C to 338°F for a sponge cake.

Tips and common mistakes

Tips

  • Always preheat your oven for at least 15 minutes.
  • Use an oven thermometer to verify the actual temperature.
  • If your oven runs hot, reduce the temperature by 10-15°C.
  • For fan ovens, reduce the temperature by about 20°C from conventional.

Common Mistakes to Avoid

  • Forgetting to add 32 when converting to Fahrenheit.
  • Using the same temperature for fan and conventional ovens.
  • Rounding too early in the conversion, leading to inaccuracies.

Assumptions and limitations

  • Use the stated inputs and units.
  • Results are estimates for planning and education.
  • Check measurements and source data before making an important decision.