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ABV Calculator
Estimate alcohol by volume from original and final specific gravity readings.
Measure better. Make with confidence.
Your next great batch starts with good numbers.
Clear, practical calculators and fermentation know-how for home wine, cider, mead, and beer makers.
25practical calculators
15recipe outlines
30guides & ingredient references
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Alcohol Dilution Calculator
Estimate the water needed to bring a measured alcohol solution to a target strength.
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Potential Alcohol Calculator
Estimate the alcohol potential represented by a starting specific-gravity reading.
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Proof Calculator
Convert alcohol by volume to US proof and back.
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Brix to SG Converter
Convert an approximate sucrose Brix reading to specific gravity.
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SG to Plato Converter
Convert specific gravity to an approximate degrees Plato extract reading.
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Find tools and practical references grouped around the fermentation you want to understand.
Alcohol & ABVMeasure, estimate, convert, and dilute alcohol strength with practical brewing calculators.Wine MakingUseful wine-making calculators and guidance for sugar, acidity, sulfite, and batch planning.Cider MakingPlan cider gravity, alcohol, carbonation, and batch size from juice to bottle.Mead MakingEstimate honey, strength, nutrients, and batch size for traditional and flavored meads.Beer BrewingCalculate beer strength, bitterness, color, strike temperature, priming sugar, and scaling.Fermentation BasicsLearn the measurements and process fundamentals behind home fermentation.IngredientsExplore yeast, sugars, honey, acids, nutrients, fruit, and common fermentation additives.
From the recipe collection
Recipes to get you started
wine making
Simple Grape Wine
A straightforward red grape wine outline focused on clean fermentation and patient settling. Use sound, food-grade fruit and a recipe suited to your grape variety.
cider making
Dry Apple Cider
A simple dry cider that lets measured apple juice and a clean fermentation do the work. Choose preservative-free juice and use a yeast intended for cider or wine.
mead making
Traditional Mead
A classic honey, water, and yeast mead. The exact honey mass is set by measured gravity rather than a fixed recipe assumption.
beer brewing
American Pale Ale
A balanced pale ale template with a moderate malt bill and hop character. Adjust water, yeast, and hop timing to your equipment and desired profile.
Learn as you go
Recently added guides
spirits
How to Understand ABV and Proof on Spirit Labels
Learn what alcohol by volume means and how the US proof convention relates to it.
spirits
How to Taste Spirits Without the Jargon
Use a simple, low-pressure tasting method to describe a spirit’s aroma, flavor, texture, and finish.
beer brewing
How to Calculate Beer Strike Water Temperature
Estimate mash-in water temperature from the target mash, grain temperature, and liquor-to-grist ratio.
beer brewing
Why Did My Beer Finish at a Higher Gravity?
Troubleshoot a beer that finishes sweeter or denser than expected by checking the recipe, mash, yeast, and readings.
Built for real-world brewing
Helpful by design
Tools support good judgment; they do not replace careful measurement or a sound process.
Know what goes in
Enter measurements you already take and see which assumptions each estimate uses.
Understand what comes out
Every calculator explains its formula, shows an example, and links to a deeper guide.
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Explore related recipes, ingredients, and guides around each fermentation topic.
Important: AlkoMaster results are educational estimates. Verify measurements, follow product instructions and local laws, and use safe, pressure-rated packaging for carbonated drinks.