Mr. dB said:
Hey DG, I'm glad you found this too, since I know you're interested in the subject.
What's to understand? It's a spreadsheet, with three sets of formulas. The first one, "Oil Based", is what you'd use for most compounds such as test, deca, eq, etc... The second column is for converting tren from Fina pellets, since the volumes work out differently due to the amount of filler that must be filtered out. The third column is for water-based compounds like winny or test susp.
You fill in the blanks in the white square, and the answers appear in the yellow square.
This spreadsheet is someone else's work, use only the "Conversion DS" page, I have no idea what the other pages are for so just ignore them. But that's the way he posted it on another board, and I've been too lazy to edit it before distributing the file further.