How should temperatures be adjusted for a fan oven?
Fan ovens quickly reach temperature and transfer heat more efficiently so they can generally be set lower by 20C. Long cooking times can be shortened by up to 10 minutes per cooking hour but you must make sure that the food is cooked!
How do I find out which temperature to reduce to?
Follow the conversion chart below:
| Conventional oven temp |
Gas Mark |
Fan Oven temp |
| 250F/120C |
1/2 |
100C |
| 275F/140C |
1 |
120C |
| 300F/150C |
2 |
130C |
| 325F/160C |
3 |
140C |
| 350F/180C |
4 |
160C |
| 375F/190C |
5 |
170C |
| 400F/200C |
6 |
180C |
| 425F/220C |
7 |
200C |
| 450F/230C |
8 |
210C |
| 475F/240C |
9 |
220C |
Fan ovens
