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Old 12-01-2008, 11:43 PM   #1
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Default attenuation

Does anyone know the formula to calculate attenuation or a link to a site for this?

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Old 12-01-2008, 11:48 PM   #2
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How to Brew - By John Palmer - Yeast Terminology

basically, just take the gravity points (e.g., 1.043 would be 43 points) and plug them into

(OG-FG)/OG x 100 = attenuation
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Old 12-02-2008, 12:44 AM   #3
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That formula is used to determine apparent attenuation, of course. I use this calculator for alcohol content (and calorie count for curiosity). Calculator It will also give real attenuation.
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