Free Oven Temperature Converter – Celsius, Fahrenheit, Fan Oven & Gas Marks

How to Use Our Oven Temperature Converter

Using the calculator is straightforward.

Step 1: Enter Your Recipe Temperature

Start by entering the oven temperature shown in your recipe.

For example, if your recipe states 180°C, enter 180.

Step 2: Choose the Original Temperature Scale

Select the type of temperature you are converting from:

• Conventional Celsius (°C)
• Fahrenheit (°F)
• Fan oven Celsius (°C)
• UK Gas Mark

Step 3: Calculate the Equivalent Oven Temperatures

Click Convert Temperature.

The calculator displays the corresponding conventional Celsius and Fahrenheit temperatures, an approximate fan oven setting, and the nearest standard UK Gas Mark.

Step 4: Check Your Recipe and Oven Instructions

Use the results as a guide when preparing your recipe.

Remember that ovens vary, and different cooking methods may require adjustments.

For best results, follow your recipe’s instructions and check that your food is cooked safely.

UK Oven Temperature Conversion Chart

The following chart shows common oven temperature equivalents used in British cooking and baking.

Please note: The Fahrenheit figures in this chart are familiar rounded recipe settings, not exact mathematical conversions. Fan oven and Gas Mark equivalents are also approximate.

How to Convert Celsius to Fahrenheit for Cooking

Converting Celsius to Fahrenheit is useful when following American recipes.

The mathematical formula is:

Fahrenheit = (Celsius × 9 ÷ 5) + 32

Example: Convert 180°C to Fahrenheit

180 × 9 ÷ 5 + 32 = 356°F

Therefore, 180°C is exactly equivalent to 356°F.

However, many recipes use 350°F as the practical oven setting closest to 180°C.

Common Celsius to Fahrenheit Oven Conversions

For cooking, familiar rounded settings are often more practical than exact mathematical equivalents.

How to Convert Fahrenheit to Celsius

If you’re following an American recipe, you may need to convert Fahrenheit into Celsius.

The formula is:

Celsius = (Fahrenheit − 32) × 5 ÷ 9

Example: Convert 350°F to Celsius

(350 − 32) × 5 ÷ 9 = 176.7°C

This is commonly rounded to 180°C for conventional oven cooking.

Our Oven Temperature Converter performs this calculation automatically.

How to Convert Conventional Oven Temperatures to Fan Oven Settings

Fan-assisted ovens circulate hot air around the food, which can improve heat distribution and often allows food to cook at a lower temperature.

A common UK guideline is to reduce a conventional oven temperature by approximately 20°C when using a fan oven.

For example:

Is a Fan Oven Always 20°C Lower?

Not necessarily.

The 20°C reduction is a useful general guideline, but the appropriate setting depends on the oven, the food being cooked and the recipe.

Some modern ovens have different fan-assisted cooking modes, and manufacturers may recommend specific adjustments.

Always consult your oven instructions when available.

UK Gas Mark to Celsius Conversion

Gas Marks are commonly found in older British cookbooks and traditional recipes.

Unlike Celsius and Fahrenheit, Gas Marks are not a continuous mathematical temperature scale.

They are numbered oven settings associated with approximate cooking temperatures.

Common Gas Mark Conversions

Gas Mark 3: Approximately 170°C conventional or 150°C fan.

Gas Mark 4: Approximately 180°C conventional or 160°C fan.

Gas Mark 5: Approximately 190°C conventional or 170°C fan.

Gas Mark 6: Approximately 200°C conventional or 180°C fan.

Gas Mark 7: Approximately 220°C conventional or 200°C fan.

Our calculator can help you find the nearest Gas Mark for a Celsius or Fahrenheit temperature.

What Is 180°C in a Fan Oven?

A conventional oven temperature of 180°C is commonly converted to approximately 160°C in a fan oven.

This is one of the most frequently used oven temperature conversions in British baking.

Many sponge cakes, biscuits and other baked goods use temperatures around this range.

However, always check the recipe and the oven manufacturer’s instructions before making adjustments.

What Is 350°F in Celsius?

350°F is approximately 177°C, commonly rounded to 180°C for conventional oven cooking.

If you are using a fan oven, an approximate starting point would be 160°C, subject to your recipe and oven guidance.

This conversion is particularly useful when following recipes from the United States.

What Is Gas Mark 4 in Celsius?

Gas Mark 4 is approximately 180°C in a conventional oven.

The commonly suggested fan oven equivalent is 160°C.

Gas Mark 4 is frequently used for cakes and general baking, although individual recipes may specify different settings.

Does Oven Temperature Affect Cooking Time?

Yes. Oven temperature can affect how quickly food cooks and how it browns.

Cooking at a higher temperature may brown the outside more quickly, while the centre may still need additional cooking.

Lower temperatures may require longer cooking times, depending on the recipe.

However, it is not possible to calculate a reliable new cooking time simply from the temperature difference.

Other factors include:

• The size and thickness of the food
• The type of oven
• The cooking dish or baking tin
• Whether the oven is preheated
• The number of dishes being cooked
• The type of food

For food safety, use appropriate done-ness checks and a food thermometer where recommended, particularly for meat and poultry.