Convert oven temperatures between Celsius (°C), Fahrenheit (°F), and Gas Mark in real-time. Includes cooking temperature guides.
A. Gas Mark is a temperature scale used in British gas ovens. It ranges from 1 to 10, where Gas Mark 4 equals approximately 180°C (350°F).
A. °F = °C × 9/5 + 32, and °C = (°F - 32) × 5/9. For example, 180°C = 356°F.
A. Yes, reduce by about 20°C (35°F) for fan/convection ovens since circulating hot air heats more efficiently.
A. US recipes use °F, UK recipes use Gas Mark or °C, and Korean/Japanese/European recipes mainly use °C.
Oven temperatures are expressed in three main units. Celsius (°C) is standard in Korea, Europe, and Australia. Fahrenheit (°F) is standard in the United States. Gas Mark originated from British gas ovens and is still common in UK recipes. Incorrect temperature conversion can lead to undercooked or burnt food, making accurate conversion essential when following international recipes.
Gas Mark was introduced in 1930s Britain with the widespread adoption of gas ovens. It represented the degree of gas valve opening from 1 to 10. Gas Mark ranges from 1/4 (110°C) to 10 (260°C), with Gas Mark 4 (180°C) being the most common baking temperature. While not used in modern electric ovens, many British cookbooks and recipes still reference Gas Mark.
In US recipes, 350°F (about 180°C) is the most common baking temperature. 400°F (200°C) is standard for roasting. British recipes' 'moderate oven' means Gas Mark 4 (180°C), and 'hot oven' means Gas Mark 7 (220°C). For convection (fan) ovens, set about 20°C lower than the recipe states. At high altitudes, you may need slightly higher temperatures and shorter cooking times.