Calculate chemical dosages, equipment sizing, water volume, and operating costs for your pool or spa — all for free. No signup, no guesswork.
ABV, grain bill, IBU, yeast pitch rate, priming sugar, and recipe scaling calculators.
Water profile adjustments, mash pH, mineral additions, strike water, and acid calculators.
Forced carbonation, hydrometer correction, yeast starters, attenuation, and cold crash calculators.
Boil-off rate, kettle sizing, keg pressure, beer line length, and brew day cost calculators.
Calculate alcohol by volume (ABV) from your original gravity and final gravity readings. Uses the standard ABV formula plus alternate methods for high-gravity beers.
Calculate how much grain you need to hit your target original gravity for a given batch size and brewhouse efficiency.
Calculate International Bitterness Units from hop additions using the Tinseth formula. Accounts for alpha acid percentage, boil time, and wort gravity.
Calculate salt and mineral additions to match a target water profile for different beer styles. Covers gypsum, calcium chloride, Epsom salt, and more.
Estimate your mash pH based on grain bill composition, water alkalinity, and calcium content using simplified chemistry models.
Calculate the exact temperature for your strike water to hit your target mash temperature, accounting for grain temperature and mash thickness.
Calculate the CO2 pressure (PSI) needed to force-carbonate your beer in a keg at a given temperature to reach your target carbonation level.
Correct your hydrometer reading for temperature. Most hydrometers are calibrated at 60F or 68F — this calculator adjusts for the actual sample temperature.
Calculate the DME and water needed for a yeast starter to grow enough cells for your batch. Supports stirred and unstirred starters with growth rate modeling.
Calculate your system boil-off rate and determine the pre-boil volume needed to end up with your target post-boil volume.