They include "Fluid ounces infused" which seems pretty important to me, compared to the site in candycane's pic. It gives me the same results as Oldbear's spreadsheet, but it works in ounces rather than ml. Good find mV!
The advantage to the spreadsheet is it will do blending calcs, and handles both THC and CBD in the same plant.
I thought it was pretty handy, but would like to find one that takes source material into account. Like flower, bubble hash, trim, etc and do the math on basic extraction rates.
This one kinda does the extraction part, but you gotta know your source strength. Still makes it a bit of a guessing game, but closer than most.