The True Proof Calculator (Excel file: TrueProofCalculator.xlsx) contains a digitized copy of TTB Table 1, and a calculator that performs True Proof calculations according to the TTB methodology. Note: we discovered a few typos in the published table. Our proposed corrections are clearly marked.
The Table 4 Calculator (Excel file: Table4Calculator.xlsx) contains a digitized copy of TTB Table 4, and two calculators. The first calculator determines wine gallons and proof gallons from weight and proof. The second calculates dilutions on a weight basis.