Gas Measures for Oven Baking.

Gas markFahrenheitCelsiusDescriptive
14225°107°Very Slow/Very Low
12250°121°Very Slow/Very Low
1275°135°Slow/Low
2300°149°Slow/Low
3325°163°Moderately Slow/Warm
4350°177°Moderate/Medium
5375°191°Moderate/Moderately Hot
6400°204°Moderately Hot
7425°218°Hot
8450°232°Hot/Very Hot
9475°246°Very Hot

To Convert Fahrenheit to Celsius:
Subtract 32, multiply by 5, then divide by 9

To Convert Celsius to Fahrenheit:
Multiply by 9, divide by 5, then add 32.

Different manufacturers and oven types do vary, so this table cannot be relied upon; instead, cooks should refer to the cooker instruction book for the oven type used, or calibrate the scale using an oven thermometer.