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Calcimator

Fermentation Yield Calculator

Estimate the expected ABV and alcohol volume from fermentation based on wash volume, sugar concentration, and yeast efficiency.

Inputs

liters
lbs/gal
%

Results

Expected Wash ABV

9.95%

Alcohol Volume

2,488 mL

≈ 7 soda cans

Total Sugar9.91 lbs
Theoretical Ethanol2.93 liters
Actual Ethanol2.49 liters
How to Use This Calculator
  1. Enter the wash volume in gallons or liters.
  2. Set the sugar concentration (Brix or g/L) and yeast efficiency percentage.
  3. The calculator shows expected wash ABV, alcohol volume in mL, total sugar in lbs, theoretical and actual ethanol in liters.
  4. Compare actual distillate yield to theoretical ethanol to assess fermentation health and yeast performance.

How the result changes with Sugar Concentration

Sugar ConcentrationExpected Wash ABVAlcohol Volume
0.754.98%1,244 mL
1.389.16%2,289 mL
2.1314.13%3,533 mL
2.7518.25%4,562 mL

What each input means

Wash Volume
Total volume of the wash (water + dissolved sugars) in liters.
Sugar Concentration
Sugar content in pounds per gallon of wash. 1.5-2.0 lbs/gal is common for a spirit wash targeting 8-12% ABV.
Yeast Efficiency
Percentage of theoretical sugar-to-alcohol conversion achieved by the yeast. Distiller's yeast typically achieves 80-90%.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    Wash Volume = 25, Sugar Concentration = 1.5, Yeast Efficiency = 85 = 3 input(s) provided
  2. Calculate Expected Wash ABV
    Expected Wash ABV
    9.95 = 9.95
  3. Calculate Alcohol Volume
    Alcohol Volume
    2488 = 2488
  4. Calculate Total Sugar
    Total Sugar
    9.91 = 9.91
  5. Calculate Theoretical Ethanol
    Theoretical Ethanol
    2.93 = 2.93

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