What is a gas mark and how does it work?

Gas mark is a traditional UK oven temperature scale used in British cooking. It ranges from 1/4 (very cool) to 9 (very hot), with each mark corresponding to specific Celsius and Fahrenheit temperatures. This system was designed for gas ovens to provide consistent cooking temperatures.

How accurate are the gas mark to Celsius/Fahrenheit conversions?

All conversions use precise oven temperature data based on professional cooking standards. Gas marks are converted to exact Celsius and Fahrenheit equivalents with temperature variations of ±5°C considered normal for oven performance.

Why do some gas marks show as fractions like 1/4 or 1/2?

Traditional gas marks include fractional settings for very precise temperature control. Gas mark 1/4 (107°C / 225°F) is the coolest setting, useful for very slow cooking, while gas mark 1/2 (121°C / 250°F) provides slightly more heat for delicate cooking.

What temperature is gas mark 4 and what is it used for?

Gas mark 4 equals 177°C or 350°F - the most commonly used oven temperature for baking. It's perfect for cakes, cookies, quick breads, and most general baking. This moderate heat provides even cooking without over-browning.

Can I use gas mark conversions for fan/convection ovens?

Fan ovens typically run about 20°C cooler than conventional ovens at the same gas mark setting. For fan ovens, reduce the temperature by 20°C or use one gas mark lower than the recipe specifies for optimal results.

What's the difference between very cool and very hot gas marks?

Very cool gas marks (1/4 to 2) are for slow cooking, dried fruits, and delicate items requiring gentle heat. Very hot gas marks (7 to 9) are for fast cooking, grilling effects, and creating crispy, caramelized surfaces on food.

How do I convert gas mark recipes for a digital oven?

Simply use the gas mark converter to find the Celsius or Fahrenheit equivalent and set your digital oven to that temperature. Remember to preheat for 10-15 minutes and consider using an oven thermometer to verify accuracy.

What gas mark is equivalent to 180°C?

180°C is approximately equivalent to gas mark 4. This is a very common baking temperature, which is why gas mark 4 is the most frequently used setting in traditional British baking recipes.

Is this converter suitable for professional kitchen use?

Yes, the converter provides professional-grade temperature accuracy and includes detailed cooking guidance for each gas mark level. Many professional kitchens still reference gas marks for consistency across different equipment types.

What makes this different from basic temperature converters?

This tool is specifically designed for oven cooking with accurate gas mark data, cooking descriptions, common uses for each temperature, and a complete reference chart. It understands the context of oven cooking, not just temperature conversion.

Can I save multiple gas mark conversions?

While the converter handles one conversion at a time for accuracy, you can copy individual results to clipboard and download the complete temperature chart for offline reference during cooking.

Does it work on mobile devices for kitchen use?

Yes, the converter is fully responsive and optimized for kitchen use on smartphones and tablets. The interface is designed for easy use while cooking, with large, readable text and touch-friendly controls.

Gas Mark Converter

Convert UK gas mark oven temperatures to Celsius and Fahrenheit for accurate cooking and baking from 1/4 to 9

gas-mark

oven

temperature

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Quick Presets

Common oven temperatures for quick conversion

Input & Settings

Convert between UK gas marks and Celsius/Fahrenheit for accurate oven cooking

Gas Mark Value

Converts between UK gas marks and Celsius/Fahrenheit temperatures. Gas marks are commonly used in British recipes.

Complete Gas Mark Temperature Chart

Essential oven temperature conversions for UK and international cooking

Gas 1/4

Very Cool

107°C

225°F

Best for:

• Very slow cooking

• Dried fruit

Gas 1/2

Very Cool

121°C

250°F

Best for:

• Very slow cooking

• Dried fruit

Gas 1

Very Cool

135°C

275°F

Best for:

• Slow cooking

• Meringues

Gas 2

Cool

149°C

300°F

Best for:

• Slow cooking

• Casseroiles

Gas 3

Moderately Cool

163°C

325°F

Best for:

• Baking

• Cookies

Gas 4

Moderate

177°C

350°F

Best for:

• Most baking

• Cakes

Gas 5

Moderate Heat

191°C

375°F

Best for:

• Roasting

• Vegetables

Gas 6

Moderately Hot

204°C

400°F

Best for:

• Roasting meat

• Fish

Gas 7

Hot

218°C

425°F

Best for:

• Fast roasting

• Crispy vegetables

Gas 8

Very Hot

232°C

450°F

Best for:

• Fast cooking

• Grilling

Gas 9

Very Hot

246°C

475°F

Best for:

• Very fast cooking

• Broiling

🔥 Oven Temperature Tips

• Always preheat your oven for 10-15 minutes before cooking
• Use an oven thermometer to verify actual temperature
• Gas marks 1-2: Very slow cooking, casseroles, dried fruits
• Gas marks 3-4: Most baking, cakes, cookies, pastries
• Gas marks 5-6: Roasting vegetables, poultry, meat
• Gas marks 7-9: Fast cooking, grilling effects, crispy foods

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