Most free SO2 calculators online ask for one or two numbers and call it done. Ours accounts for pH alongside free and molecular SO2 — because that’s what an accurate addition actually requires, not a shortcut version of it.
It’s free, it lives on our Resources page, and we built it because the tools out there weren’t giving us numbers we’d trust for our own cellar work either. We’ve spent over two decades in winemaking and stayed deeply involved in the Texas wine industry — the same standard applies here as everywhere else we work.
Run a Whole Cellar’s Worth of Lots in One Pass
Upload a CSV or Excel file listing multiple lots, and the calculator runs the SO2 addition across all of them in a single batch — no re-entering numbers tank by tank.
If you use Amphora, you can pull this straight from your production data: follow our Amphora export guide to load the custom query into Amphora through its standard interface, then feed that export directly into the calculator.
Once the batch runs, print an addition list organized by the vessels in your uploaded file — ready to hand to the cellar crew.
Try It
Head to the Resources page, upload your Amphora export or your own spreadsheet, and print your addition list in minutes. This is the first in an ongoing set of practical tools we’re adding to Resources — let us know what you’d want to see next.
