Calculator
ABV Calculator
Estimate alcohol by volume from original and final specific gravity readings.
The AlkoMaster toolkit
Fermentation calculators
Choose a tool, enter your measurements, and review the formula and assumptions behind every estimate.
Alcohol & ABV
Alcohol & ABV
Calculator
Alcohol Dilution Calculator
Estimate the water needed to bring a measured alcohol solution to a target strength.
Calculator
Potential Alcohol Calculator
Estimate the alcohol potential represented by a starting specific-gravity reading.
Calculator
Proof Calculator
Convert alcohol by volume to US proof and back.
Calculator
Brix to SG Converter
Convert an approximate sucrose Brix reading to specific gravity.
Calculator
SG to Plato Converter
Convert specific gravity to an approximate degrees Plato extract reading.
Wine Making
Wine Making
Calculator
Wine Sugar Calculator
Estimate a sugar addition to raise wine must to a target specific gravity.
Calculator
Wine Acidity Calculator
Estimate a tartaric-acid addition to move measured titratable acidity toward a target.
Calculator
SO₂ Calculator
Estimate potassium metabisulfite needed for a free-SO₂ target adjustment.
Calculator
Potassium Metabisulfite Calculator
Estimate a potassium metabisulfite mass for a chosen free-SO₂ increase.
Calculator
Wine Batch Size Calculator
Estimate the finished wine volume needed to fill a chosen number of bottles.
Cider Making
Cider Making
Calculator
Cider Sugar Calculator
Estimate fermentable sugar needed to raise cider juice to a target gravity.
Calculator
Cider ABV Calculator
Estimate cider alcohol from original and final specific gravity.
Calculator
Cider Carbonation Calculator
Estimate priming sugar for a target bottle-carbonation level.
Calculator
Cider Batch Size Calculator
Estimate apple mass from a target juice volume and expected pressing yield.
Mead Making
Mead Making
Calculator
Mead Honey Calculator
Estimate honey needed to reach a target must gravity in a chosen batch volume.
Calculator
Mead ABV Calculator
Estimate fermented mead strength from original and final gravity readings.
Calculator
Mead Nutrient Calculator
Create a conservative starting estimate for a staged mead nutrient plan.
Calculator
Mead Batch Size Calculator
Estimate must volume from a target number of bottles and process-loss allowance.
Beer Brewing
Beer Brewing
Calculator
Beer ABV Calculator
Estimate beer strength from original and final gravity readings.
Calculator
Priming Sugar Calculator
Estimate sucrose for bottle conditioning to a target carbonation level.
Calculator
IBU Calculator
Estimate bitterness from hop mass, alpha acids, utilization, and wort volume.
Calculator
SRM / EBC Calculator
Estimate beer color from malt color units and convert SRM to EBC.
Calculator
Strike Water Temperature Calculator
Estimate mash-in water temperature from grain and target mash temperatures.
Calculator
Beer Recipe Scaling Calculator
Scale ingredient amounts proportionally to a new batch volume.