In the Evaluating Exam the PEBC generally provide you with formulas but not unit conversions. The formulas provided at the start of the paper can be found http://www.pebc.ca/EnglishPages/EEX/EEXFormulas.html. Some questions may provide you with unit conversions but there is no guarantee of this. As such I would say it is a good idea to learn the common pharmaceutical unit conversions.

I found a good conversion table at www.tostepharmd.net. Also check out the Pharmacy Calculations: Links section of the website.

Good Luck,
Mat.