Very slow oven
225 degrees F
110 degrees C
Gas Mark 1/4
Very slow oven
250 degrees F
120 degrees C
Gas Mark 1/2
Very slow oven
275 degrees F
135 degrees C
Gas Mark 1
Slow oven
300 degrees F
150 degrees C
Gas Mark 2
Moderately slow oven
325 degrees F
165 degrees C
Gas Mark 3
Moderate oven
350 degrees F
180 degrees C
Gas Mark 4
Moderate, medium oven
375 degrees F
190 degrees C
Gas Mark 5
Hot (or quick) oven
400 degrees F
205 degrees C
Gas Mark 6
Hot (or quick) oven
425 degrees F
220 degrees C
Gas Mark 7
Very hot oven
450 degrees F
230 degrees C
Gas Mark 8
Extremely hot oven
475 degrees F
250 degrees C
Gas Mark 9
Extremely hot oven
500 degrees F
260 degrees C