Brewing Calculators
Instant server-accurate brewing math powered by HTMX — no spreadsheets required.
ABV & Attenuation
Estimate alcohol by volume, apparent attenuation, and calories.
Hydrometer Temp Correction
Correct specific gravity readings taken above or below calibration temp.
Refractometer FG
Adjust fermenting Brix readings for alcohol refraction (Terrill cubic).
Priming Sugar & CO₂
Calculate dextrose, sucrose, or DME for bottle conditioning.
Strike Water & Temp
Find mash water volume and strike temperature to hit target mash temp.
Wort Dilution
Calculate top-off water needed if pre-boil or post-boil OG is too high.