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Old 10-11-2012, 12:15 PM   #1
berk2027
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Default Working out %abv

Have asked before but now done the maths and I'm confused. So I have a wine started with a sg of 1,084 so I minuse the final gravity ( 1,001 )from that witch equals 83 so I multiply that by 131.25 that equals 10,893•75. So would that mean the ABV would be 10•89%abv cheers

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Old 10-11-2012, 12:26 PM   #2
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Your hydrometer has three sides. 1. Gravity, 2. Abv, 3. Balling. As you read the gravity, spin it to see the corresponding abv. In your case 1.084 looks like about 12% abv in your OG. Then at 1.001 looks like about 1 or 2%. Your then subtract these two figures to calculate your final ABV. In your case, should be about 10%.

Granted, I'm fairly new to the hobby, but this is how I've come to understand it. If there is anyone here with better explanations, please add.

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Old 10-11-2012, 12:31 PM   #3
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Quote:
Originally Posted by berk2027
Have asked before but now done the maths and I'm confused. So I have a wine started with a sg of 1,084 so I minuse the final gravity ( 1,001 )from that witch equals 83 so I multiply that by 131.25 that equals 10,893•75. So would that mean the ABV would be 10•89%abv cheers
Yes that's what I got 10.89%ABV so yes your math is correct. (OG - FG ) x 131.25 = ABV%
(OG 1.084 - FG 1.001) x 131.25= abv%
.083 x 131.25 = 10.89%ABV
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Old 10-11-2012, 12:32 PM   #4
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you have it right berk

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Old 10-11-2012, 12:40 PM   #5
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I hadn't seen that formula before. I like it. Nice and easy.

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