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Old 10-01-2009, 10:15 PM   #1
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Default How to estimate ABV?

I'm looking for a calculator so I can estimate the ABV before I even start a brew. For example, if I add X amount of LME into a 23L batch I will get X% ABV.

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Old 10-01-2009, 10:35 PM   #2
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you could use beer calculus

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Old 10-02-2009, 01:41 AM   #3
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Og - Fg / 7.36 = Abv

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Old 10-02-2009, 01:55 AM   #4
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This was something i looked into during my first batch and was amazed at how many different ways people determine %ABV. I found a few that were middle of the road, took an average and that's what i use. I know, homebrewing and several different ways to do the same thing, go figure.

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Old 10-02-2009, 06:21 AM   #5
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Quote:
Originally Posted by sub-zero View Post
Og - Fg / 7.36 = Abv
I know that, what I want to know is how much malt extract I need for a certain ABV in a certain sized batch.
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Old 10-02-2009, 10:31 AM   #6
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36 points per gallon per pound of liquid extract
44 points per gallon per pound of dry extract

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Old 10-02-2009, 11:47 AM   #7
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You'll also need to check the % attenuation of whatever yeast you end up using, along with aerating your wort sufficiently enough that the yeast can eat through all the sugar they are supposed to. Probably not as cut and dry as you would have liked, but I suppose if you just wanted to guesstimate the abv you could assume a FG of somewhere between 1.010 and 1.020 and do the calculations off of that.

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Old 10-02-2009, 11:54 AM   #8
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Beer smith can help you plan a recipe and will give you ABV, color, etc. It's an awsum tool.

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Old 10-02-2009, 01:06 PM   #9
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I use BeerSmith and love it. Before that i used The Beer Recipator

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