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Calcimator

Vinegar Mother Calculator

Calculate expected acetic acid percentage and fermentation time for homemade vinegar. Factor in starting ABV, mother size, vessel volume, and temperature.

Inputs

Results

Expected Acetic Acid

5.7%

Days to Finish30 days
Weeks to Finish4.3 weeks
Optimal Temperature77–86°F (25–30°C)
How to Use This Calculator
  1. Enter the starting ABV percentage of the liquid you are converting to vinegar.
  2. Set the weight of mother (acetobacter culture) in grams and total vessel volume in mL.
  3. Enter fermentation temperature in °F.
  4. The calculator shows expected acetic acid percentage, days and weeks to finish, and optimal temperature range.
  5. Cover the vessel with breathable cloth, maintain temperature, and taste regularly starting at the predicted finish date.
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