Tools
Free calculators for brewers, winemakers, distillers, cidermakers, and mead makers — quick reference, no account required.
Compliance-grade calculators
Proof Gallons
Convert a volume + proof into wine gallons and proof gallons.
Proofing Down
Find the water needed to bring spirits down to a target proof.
Weight to Proof Gallons
Gauge by scale: convert a net weight into wine gallons and proof gallons.
Temperature Correction
Correct a hydrometer proof reading taken off 60°F to its true proof at 60°F.
These are quick estimates for reference — tools, not official TTB filings or gauge records.
Estimates (non-regulatory)
Not an official measurementThese tools use industry conventions with NO official government formula or source. Never use them for a tax or label filing.
ABV from Gravity
Estimate ABV from an original and final gravity reading.
IBU Calculator
Estimate bitterness (IBU) from a hop bill — Tinseth, Rager, or Garetz.
Priming Sugar
Find the priming sugar to bottle-condition beer to a target carbonation.
Brix to Potential Alcohol
Estimate a wine must’s potential alcohol from its Brix or specific gravity.
Chaptalization
Find the sugar to raise a wine must from its current Brix to a target Brix.
Mead Honey
Estimate the honey to hit a target original gravity for a batch of mead.
Cider ABV
Estimate a cider’s potential alcohol from its juice specific gravity.
Reference tools, not a system of record. These free calculators are provided for convenience and general reference only. They are not a system of record and must not be used as the basis for any TTB or state compliance filing — even when a result is correct. Your official filings are governed by the applicable measurement and gauging methods and by your own production records.