You'll get better value from your course if you do the homework, rather than
us doing it for you.
At present you obviously don't have a specific Excel question, but you need
to sort out what it is that you are trying to achieve. If you don't know
what a conversion table or a conversion chart looks like, then the first
stage of your task is to find out. You could try a search engine, or even
look the term up in a book? There are countless different formats from
which you can choose. Decide what you like, then look at Excel to see how
to achieve that. Remember also that Excel has a Help facility.