need help! math involved - Home Brew Forums

 Home Brew Forums > need help! math involved

07-10-2012, 05:44 PM   #1
BrewScout

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Feb 2012
Fort Hood, TX
Posts: 251
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I need to know what gravity I will come to when I add .5 gal of water to 5.25 gallons of 1.058 wort.
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07-10-2012, 05:53 PM   #2
frazier
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Dec 2009
illinois
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Your gravity is diluted by the ratio of old volume to new volume. So: New Gravity Points = 58 x (5.25 / 5.75) = 52.9 So your new gravity = 1.0529 or 1.053.

The confusing thing about gravity math is the "1.xxx" you have to deal with, which throws simple math out the window. For example, if you multiply 1.058 by your volume ratio, the answer is wrong. Easier just to work with the Gravity Points, which is why the equation uses 58 instead of 1.058.

HTH
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07-10-2012, 06:49 PM   #3
BrewScout

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Feb 2012
Fort Hood, TX
Posts: 251
Liked 11 Times on 11 Posts

Thanks alot.
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07-10-2012, 06:55 PM   #4
TyTanium
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Nov 2011
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Haha.

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