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Hausbrauen
ABV, IBU, grain bill and priming sugar tools for homebrewers.
ABV Calculator (OG → FG + Refractometer)
Calculate beer ABV from original and final gravity, with refractometer correction and attenuation %.
IBU Hop Bitterness Calculator (Tinseth & Rager)
Calculate IBUs from boil time, gravity, hop AA% and batch size using Tinseth or Rager utilisation.
Grain Bill, Mash & Strike Water Calculator
Plan a beer recipe: fermentables percentages, predicted OG, SRM colour, mash and strike water volumes.
Priming Sugar Calculator (Bottle Carbonation)
Grams of priming sugar for target CO₂ volumes by style, batch size and temperature.