Oven Temperature Conversion - Cooking Index
We spent a lot of time trying to work out the best conversions between different recipe temperatures and we found that almost every source has a different conversion level. These are the ones that seem to be most agreed upon by leading cookery sources.
That said, you have to remember that most ovens (especially domestic ones) do not cook at anything near the temperature on the oven. A freestanding oven thermometer is very handy (and inexpensive) to find out what temperature your oven really is cooking at.