Calculating the alcohol content of a wine that you made is always fun. While amateur wine makers don’t need to report this value to anyone it’s just neat to know how much alcohol you’ve produced.
Use Wine Equations and Calculators Only
There are many formulas out there for calculating the percent alcohol of wine and beer. You may have noticed that they’re not the same. Largely this is because the relationship between the specific gravity and the amount of alcohol produced is not linear.
What this means is that specific gravity and alcohol content have a complex relationship that is not easily represented with a simple equation. Non-linear equations can be pretty nasty to deal with.
To get around these nasty but accurate equations simpler equations have been developed but they are only relevant for a small range of alcohol content. Wine, typically has an alcohol content of around 11-15% while beer is usually around 5-6%. Because of this they each have their own alcohol content equation based on these different ranges of alcohol.
In short be sure that you’re using an equation specific to wine making. A beer equation can lead to incorrect results.
The Wine Alcohol Content Calculator
The simplest way to calculate your alcohol content is with a calculator. You’ll need to know your starting or original specific gravity that you took before fermentation began. Also, you’ll need the final specific gravity taken once your wine has finished fermenting and is stable. Just plug in both values and press calculate.