Type in the defense of the mob ( look at bgwiki)
type in your job type/weapon
Has an added (but don't need to use it) enfeeble section were you can add ailments on the mob
and it spits out what attack you need to be at

https://docs.google.com/spreadsheets/d/1xnC7ETVxBDQ5jIgE7umoyryc6cL0VZyoUUe99QJrOIU
I'll probably move it to calculoid at some point to better support multiple people usage
P.S.
Its under the "DPS" tab.
link takes you the the cure tab since its the fist one
-- edit --
I made it in calculoid instead
https://embed.calculoid.com/?calcId=102293&apiKey=60dfaae363cd93ab798a8
It has the changed for the randomize included so atk cap values will be higher and more correct on this one