FermCalc Winemaking Calculator

Steve Gross

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NOTE: See the important installation note at the end of this description.

FermCalc is a collection of advanced winemaking calculators designed to assist both amateur and professional winemakers with calculations related to the following activities:

- Unit conversions
- Chaptalization & dilution
- Acidity adjustment
- Sulfite additions
- Alcohol & solids content estimation
- Blending
- Fortification
- Miscellaneous additions

FermCalc provides full flexibility for specifying both input and output units on all of the calculators. All of the functionality of the popular Java and JavaScript versions of FermCalc are included in the Andrioid version.

Below is a complete list of the calculators currently available.

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Unit Conversions
-- Volume
-- Mass
-- Temperature
-- Specific Gravity / Density
-- Acidity
-- Alcohol Content
-- Concentration
-- Refractivity
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Sugar Calculators
-- Chaptalization & Dilution
-- Amelioration
-- High Brix Measurement by Dilution
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Acidity Calculators
-- Acid Titration
-- Acidification & Deacidiication
-- Amelioration
-- NaOH Standardization
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Sulfite Calculator
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Alcohol Content Calculators
-- Hydrometer SG Drop
-- Hydrometer & Refractometer
-- Boiling (Spirit Indication)
-- Potential Alcohol
-- OIML Calculator
-- Dry Matter
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Blending Calculator
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Fortification Calculators
-- Post-Fermentation Fortification
-- Fortification Point
-- Hackbarth SG Calculator
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Miscellaneous Calculators
-- Dry Measure Converter
-- Stock Solution Formulation
-- Inverse Stock Solution Makeup
-- Miscellaneous Additions
-- Yeast Assimilable Nitrogen (YAN)
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A help page is provided for each calculator, with a high-level description of the calculator and definitions of the input and output fields. Full details regarding the mathematics involved in the calculations are available at www.fermcalc.com.

IMPORTANT Installation Note: The stock numeric keypad on some Samsung and LGE devices does not include a decimal, which makes FermCalc almost impossible to use. The workaround is to go to Google Play and install the Google Keyboard or some other third-party keyboard. After you install the new keyboard, go to Settings > Language and Input, and set the new keyboard as the default keyboard. After following these steps your numeric keypad should include a decimal.

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This is a maintenance release to comply with new Google requirements. There are no changes to the calculators.