Bitterness (IBU) Calculator

International Bitterness (IBU) Calculator use your target Batch Size and Original Gravity to estimate how bitter your beer will be based on up to 6 hops additions. Calculations have been adjusted for full and partial mash batches, and takes into consideration, the average utilization differences between whole leaf hops and pellet hops. IBU Scale starts at 0 for beers with no bitterness (fruit and sour beers), and goes all the way up to 120 for highly–bitter beers (Imperial IPA and Barley Wines).

Batch Size:
Target Original Gravity:  SG (
Amount Alpha Acids (%) Boil Time (min) Type
IBU (Rager):
IBU (Tinseth):
Online calculators are designed to be informational and educational tools only. This online calculator is provided as a rough approximation and the results presented by this calculator are hypothetical and may not reflect total accuracy. Hopsteiner is not responsible for the consequences of any decisions or actions taken in reliance, nor responsible for any human or mechanical errors or omissions upon or as a result of the information provided by these tools.