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
- Enter the starting ABV percentage of the liquid you are converting to vinegar.
- Set the weight of mother (acetobacter culture) in grams and total vessel volume in mL.
- Enter fermentation temperature in °F.
- The calculator shows expected acetic acid percentage, days and weeks to finish, and optimal temperature range.
- Cover the vessel with breathable cloth, maintain temperature, and taste regularly starting at the predicted finish date.
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