Hops Alpha Acid Percentages - Home Brew Forums
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Old 06-12-2009, 10:50 PM   #1
Champurrado
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Oct 2008
NYC, NY
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Sometimes when a recipe calls for a certain Alpha Acid percentage in the Hops I have to make due with either a higher percentage hops or lower percentage hops from my Home Brew Supplier. Is there a quick and dirty calculator to convert the amount of hops necessary to achieve the same IBU with more/less of a different percentage hops?

Thanks.



 
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Old 06-12-2009, 10:53 PM   #2
The Pol
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Feb 2007
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Any brewing software will do it, free or pay to play software.



 
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Old 06-12-2009, 11:50 PM   #3
weirdboy
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May 2009
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Step 1. Calculate AAUs
First, if it's not listed, calculate the AAUs (Alpha Acid Units) for each hop addition in the recipe.

AAUs = (weight in oz.) x (recipe hops AA%)



Step 2. Calculate the required weight of your hops
Then, just divide the AAUs you got in step 1.

(needed weight of your hops in oz) = AAUs / (your hops AA%)

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Old 06-13-2009, 12:27 PM   #4
Champurrado
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Oct 2008
NYC, NY
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Pol, Wierdboy:

Thanks for the info.

 
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