Our Original Gravity Calculator helps brewers quickly estimate OG from grain weight, extract potential, batch size, and brewhouse efficiency. Instead of guessing, you can predict fermentable sugar levels before brew day and make better recipe decisions with confidence.

Accurate OG is one of the most important factors in beer brewing because it directly affects alcohol potential, balance, and consistency. By using this brewing gravity calculator, homebrewers and craft brewers can refine grain bills, reduce batch-to-batch variation, and build repeatable beer recipes with more reliable results.