If you use FF4 and cannot view the ZohoSheet online calculators, there is now a workaround.  Click here!

In order to input your data, click the "Click to Edit" button.  Afterwards, specify whether you are two-handing 
the weapon (1) or not (0).  Then, plug in the stat values you wish to test.

Select the type of arrow you want and input the number into the "Arrow Selection" cell.  Do the same for
selecting your bolts.

Note: Should you accidentally delete something important, simply reload the page to restart.
I apologize but this edit method is the best I can find currently.