mikepetro, over on the ECF board put this nifty calculator together, and was kind enough to give his blessing to share it here on ELR.
Hey, we’re all in this mess together, right?
Fill in a few basic numbers, how much you vape & your nicotine strength. The calculator defaults to 100 mg / 1 liter, but you can change that, if you wish.
The calculator will tell you how long your stock of nicotine will last, at your present rate of consumption, and by playing with the numbers a little, it will tell you how much you need, to last a specific number of years.
You will need to hit the download button at the top of the window,
and just open it in Excel or whatever spreadsheet app you use.
Worked fine for me, in Open Office