Values from calculation fields should also export.
What kind of caclulations are these? Are they stored or unstored calculations?
There's more than one way to export to excel. Which method did you use? Save As | Excel or Export records?
I have tried both of these methods. They are stored calculations that alter the content of a field based on what other fields contain
Then the values should export successfully.
Is the return type of the calculation consistent with the type of the value computed? In otherwords if you have a calculation that returns text, did you select "text" as the return type?