Homebrew Calculations

Moromi

Brewing calculators that show their work. No account, no subscription, works offline.

Every calculator here shows the exact equation it uses — open Formula on any card. Constants are derived from stoichiometry or cited to their published source, so you can check the number rather than trust it.

ABV CalculatorWork out alcohol by volume from original and final gravity, with both Priming Sugar CalculatorCalculate priming sugar for bottle conditioning from target CO2 volume IBU CalculatorCalculate IBU for a hop addition using both the Tinseth and Rager mode Refractometer CorrectionCorrect a refractometer reading for alcohol to get true final gravity,Force Carbonation CalculatorFind the CO2 regulator pressure that holds a target carbonation level Beer Colour CalculatorEstimate beer colour in SRM and EBC from grain weight, grain colour in Hydrometer Temperature CorrectionCorrect a hydrometer reading taken at the wrong temperature back to th Gravity ConverterConvert between specific gravity, degrees Plato, Brix and gravity poin Dilution & Boil-OffWork out how much water to add, or how much to boil away, to bring wor Strike Water TemperatureCalculate the strike water temperature needed to hit your mash target,Yeast Pitching RateCalculate how many yeast cells a batch needs from volume, gravity and