# FermCalc Winemaking Calculator

> Advanced winemaking calculators for unit conversions, adjustments, and estimations. (iPhone/iPad app by Stephen Gross.)

- Source: https://appshunter.io/ios/app/fermcalc-winemaking-calculator/id6470156850 (this page in markdown: same URL + `.md`)
- Developer: [Stephen Gross](https://appshunter.io/developer/1713083160)
- Category: Utilities, Food & Drink
- Price: Free
- Rating: 5.00/5 from 4 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 1 MB
- Languages: English
- Released: 2023-10-31
- Data updated: 2026-06-07
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/fermcalc-winemaking-calculator/id6470156850/reviews.md

## What is FermCalc Winemaking Calculator?

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.

----------------------------------------
Unit Conversions
-- Volume
-- Mass
-- Temperature
-- Specific Gravity / Density
-- Acidity
-- Alcohol Content
-- Concentration
-- Refractivity
----------------------------------------
Sugar Calculators
-- Chaptalization & Dilution
-- Amelioration
-- High Brix Measurement by Dilution
----------------------------------------
Acidity Calculators
-- Acid Titration
-- Acidification & Deacidiication
-- Amelioration
-- NaOH Standardization
----------------------------------------
Sulfite Calculator
----------------------------------------
Alcohol Content Calculators
-- Hydrometer SG Drop
-- Hydrometer & Refractometer
-- Boiling (Spirit Indication)
-- Potential Alcohol
-- OIML Calculator
-- Dry Matter
----------------------------------------
Blending Calculator
----------------------------------------
Fortification Calculators
-- Post-Fermentation Fortification
-- Fortification Point
-- Hackbarth SG Calculator
----------------------------------------
Miscellaneous Calculators
-- Dry Measure Converter
-- Stock Solution Formulation
-- Inverse Stock Solution Makeup
-- Miscellaneous Additions
-- Yeast Assimilable Nitrogen (YAN)
----------------------------------------

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.

## Key features

- Unit conversions (volume, mass, temperature, etc.)
- Chaptalization & dilution calculations
- Acidity adjustment tools
- Sulfite addition calculator
- Alcohol & solids content estimation
- Blending and fortification calculators
- Miscellaneous winemaking additions

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/fermcalc-winemaking-calculator/id6470156850/reviews.md

### 5/5 — Great!

*2026-02-04*

I’ve been using this for years, amazingly easy to use app that does exactly what you want for brewing calculations.

## Frequently asked questions about FermCalc Winemaking Calculator

### What winemaking calculations can FermCalc help with?

FermCalc assists with a wide range of winemaking calculations including unit conversions, chaptalization, dilution, acidity adjustment, sulfite additions, alcohol and solids content estimation, blending, and fortification. It covers miscellaneous additions like Yeast Assimilable Nitrogen (YAN).

### Is FermCalc suitable for beginners in winemaking?

Yes, FermCalc is designed for both amateur and professional winemakers. It provides a help page for each calculator with descriptions and definitions, making it accessible for those new to winemaking.

### Does FermCalc allow for custom unit inputs and outputs?

Yes, FermCalc provides full flexibility for specifying both input and output units on all of its calculators. This allows users to work with their preferred measurements.

### What platforms is FermCalc available on?

FermCalc is available on iOS devices, including iPhone and iPad. The functionality is similar to popular Java and JavaScript versions.

### How often is FermCalc updated?

The latest version of FermCalc is 2.98.2, which was last updated on November 1, 2023. Updates are generally frequent, ensuring the app remains current.

### What is the age rating for FermCalc?

FermCalc has an age rating of 4+. This indicates it is suitable for a very broad audience and contains no mature content.

### Where can I find more detailed mathematical information for FermCalc's calculators?

Full details regarding the mathematics involved in the calculations are available at www.fermcalc.com. This resource provides in-depth explanations for advanced users.

### Does FermCalc have ads?

No, FermCalc does not contain advertisements. It is a completely ad-free application, allowing for an uninterrupted user experience.

## Version history (last 1 release)

### 2.98.2 — 2023-11-01

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-07.*