Alpha Acid Units

The Alpha Acid Units calculator computes the amount of Alpha Acid Units based on the percent of the Alpha Acid and the weight.

INSTRUCTIONS: Choose units and enter the following:

• (PAA) Percent of the Alpha Acid
• (W) Weight

Alpha Acid (AA): The calculator returns the amount of Alpha Acids in ounces.  However, this can be automatically converted to compatible units via the pull-down menu.

The Math / Science

Alpha Acid units are a measurement of Hops equal to the weight in ounces multiplied by the percent of Alpha Acids. Alpha Acids derive from hop plant and cause the hop bitterness. Alpha acids are produced in beer when hops are added to the boiling wort. The amount of bitter flavor produced by the hops is dependent on the length of time the hops are boiled.