Oven Temperature & Gas Mark Converter
Convert between Fahrenheit, Celsius and UK gas mark oven temperatures.
Assumptions used in this calculation
- Standard UK gas mark table: Gas marks 1-9 map to the commonly published UK oven temperature equivalents, ovens vary somewhat by manufacturer.
About this calculator
UK recipes and older cookbooks often specify oven heat as a 'gas mark' number rather than a temperature, which is meaningless if your oven only displays Celsius or Fahrenheit, and the gas mark scale isn't a simple linear formula you can convert with basic arithmetic. This calculator converts between all three systems at once: it applies the standard °F = °C × 9/5 + 32 formula for the Celsius/Fahrenheit conversion, and maps to the commonly published UK gas mark table (marks 1 through 9) for that scale, so entering a temperature or gas mark in any one system instantly gives you the other two. It removes the need to look up or memorize the gas mark table when following a recipe from a different country, and helps avoid an oven set 20-30 degrees off from what the recipe intended, which can noticeably affect baking results.
Worked example
180°C
Result: 356°F, Gas mark 4
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