First Wort Hop IBU Calculator

Calculate IBU contribution from first wort hopping

Total weight or mass value. Convert between units as needed (1 kg = 2.2 lbs).
oz
Enter the alpha acid value for this calculation.
%
Length of time in the specified unit.
minutes
Enter the wort gravity value for this calculation.
SG
Three-dimensional space occupied (L × W × H for boxes).
gallons

Results

FWH IBUs:
Calculated fwh ibus based on your inputs.
-IBU
Standard 60min IBUs for comparison:
Minimum required or calculated value.
-IBU
Reference: Industry Standards.