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Old 01-22-2013, 02:21 PM   #1
J-stone
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Default Efficiency; equation help please

So, after my first AG batch I would like to know what my efficiency was. I tried running the numbers myself and I must be wrong.

2-Row Malt 9lbs
carafoam 0.5lb
OG about 1.058

I came up with 80%, is that right?

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Old 01-22-2013, 06:26 PM   #2
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One critical piece of information missing here.. how much (volume) did you end with??

Could also do a quick double-check w/ this website: http://www.brewersfriend.com/brewhouse-efficiency/

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Old 01-23-2013, 03:08 PM   #3
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Wow, I guess that afternoon homebrew hit me hard yesterday. . . 4.5 gal end volume. . . Sorry about partial info

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Old 01-23-2013, 07:23 PM   #4
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No worries. When I do the calc I get 74.7% efficiency - (58x4.5)/(9x37+0.5x33)

Matches pretty well with the online calc I noted above (74.25%).. depends a bit on what source you look at for each grains ppg.. varies a bit.

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