Ss Brewing Technologies Giveaway!

Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Assistance with interpreting hydrometer readings please!
Reply
 
LinkBack Thread Tools
Old 02-18-2013, 05:39 PM   #1
Bevilaquafoto
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2012
Location: New York, New York
Posts: 36
Default Assistance with interpreting hydrometer readings please!

I have been looking through the numerous threads regarding the use of a hydrometer, and, believe it or not, I am still confused. I brewed a graff and took an original gravity reading. It read 64. I think the correct way to read this is 1.064. I got a final gravity reading at the 8 mark, very close to the red line at the top of the hydrometer. Is this 1.08? Having gotten these two figures, both at 68 degrees, how do I go about using these two readings to determine alcohol content? Any help would be greatly appreciated.

__________________

Lorenzo Bevilaqua
Lorenzo Bevilaqua Photography
http://www.lorenzobevilaqua.com

Leave the gun. Take the cannolis.

Bevilaquafoto is offline
 
Reply With Quote Quick reply to this message
Old 02-18-2013, 05:45 PM   #2
Jayhem
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2011
Location: Culpeper, VA
Posts: 2,568
Liked 257 Times on 208 Posts
Likes Given: 1163

Default

Yes, 64 is actually 1.064.

The formula for determining alcohol content (ABV%) is

(OG - FG) x 131.25

So if your OG (Original Gravity) was 1.064 and FG (Final Gravity) was 1.012 you would have...

(1.064 - 1.012) x 131.25 = 6.8%

__________________

Next up: American Pale Ale
Primary 1&2: American Brown Ale
Primary 3&4: Hopped up Belgian Tripel
Bottle Conditioning/drinking: Summer Kolsch, White Zombie (Amarillo IPA), English Pale Ale (ESB)

Jayhem is offline
 
Reply With Quote Quick reply to this message
Old 02-18-2013, 05:46 PM   #3
chutracheese
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2010
Location: Stuarts Draft
Posts: 125
Liked 11 Times on 6 Posts
Likes Given: 15

Default

It's probably 1.008.
(OG-FG)*131.25 = ABV
(1.064-1.008)*131.25= 7.35
so 7.4%abv

__________________
chutracheese is offline
 
Reply With Quote Quick reply to this message
Old 02-18-2013, 05:56 PM   #4
Bevilaquafoto
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2012
Location: New York, New York
Posts: 36
Default

Great! Thank you. Does this make any sense?

1.064 OG minus

1.008 FG = .056

.056 x 131.25 = 7.35 ABV

Does that look about right?

__________________

Lorenzo Bevilaqua
Lorenzo Bevilaqua Photography
http://www.lorenzobevilaqua.com

Leave the gun. Take the cannolis.

Bevilaquafoto is offline
 
Reply With Quote Quick reply to this message
Old 02-18-2013, 05:56 PM   #5
Jayhem
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2011
Location: Culpeper, VA
Posts: 2,568
Liked 257 Times on 208 Posts
Likes Given: 1163

Default

Quote:
Originally Posted by Bevilaquafoto View Post
Great! Thank you. Does this make any sense?

1.064 OG minus

1.008 FG = .056

.056 x 131.25 = 7.35 ABV

Does that look about right?
You got it!
__________________

Next up: American Pale Ale
Primary 1&2: American Brown Ale
Primary 3&4: Hopped up Belgian Tripel
Bottle Conditioning/drinking: Summer Kolsch, White Zombie (Amarillo IPA), English Pale Ale (ESB)

Jayhem is offline
 
Reply With Quote Quick reply to this message
Old 02-18-2013, 06:02 PM   #6
Bevilaquafoto
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2012
Location: New York, New York
Posts: 36
Default

Thank you! I'm very happy. I have to get a hydrometer that's a bit easier to read, but I am very happy to finally know how. Thanks again everyone.

__________________

Lorenzo Bevilaqua
Lorenzo Bevilaqua Photography
http://www.lorenzobevilaqua.com

Leave the gun. Take the cannolis.

Bevilaquafoto is offline
 
Reply With Quote Quick reply to this message
Old 02-19-2013, 09:04 AM   #7
stvo
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2012
Location: Covina, California
Posts: 361
Liked 43 Times on 32 Posts
Likes Given: 8

Default

Quote:
Originally Posted by Bevilaquafoto View Post
Thank you! I'm very happy. I have to get a hydrometer that's a bit easier to read, but I am very happy to finally know how. Thanks again everyone.
there's an app for that (abv)
__________________
stvo is offline
 
Reply With Quote Quick reply to this message
Old 02-19-2013, 09:29 AM   #8
unionrdr
Wannabe author
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
unionrdr's Avatar
Recipes 
 
Join Date: Feb 2011
Location: Sheffield, Ohio
Posts: 28,911
Liked 2003 Times on 1754 Posts
Likes Given: 1477

Default

Quote:
Originally Posted by Bevilaquafoto View Post
Great! Thank you. Does this make any sense?

1.064 OG minus

1.008 FG = .056

.056 x 131.25 = 7.35 ABV

Does that look about right?
And by the way,it isn't expressed as ".056". You don't drop the one,so it's "1.056". Water at 66F being "1.000" you're adding the number to it that's over the gravity of water when you express it.
__________________
Everything works if ya let it-Roady(meatloaf)
My new book is on Amazon Kindle! http://www.amazon.com/dp/B00L3MCU0W
unionrdr is online now
 
Reply With Quote Quick reply to this message
Old 02-19-2013, 11:10 AM   #9
BrewerBear
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2011
Location: !, !
Posts: 1,191
Liked 69 Times on 63 Posts
Likes Given: 21

Default

Quote:
Originally Posted by unionrdr View Post
And by the way,it isn't expressed as ".056". You don't drop the one,so it's "1.056". Water at 66F being "1.000" you're adding the number to it that's over the gravity of water when you express it.
The .056 is correct.It is the difference betweed OG(1.064) and FG(1.008) 1.064-1.008=.056

.056x131.25=7.35a=ABV
__________________
BrewerBear is offline
 
Reply With Quote Quick reply to this message
Reply



Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Hydrometer readings too low? saxman1036 Equipment/Sanitation 11 04-09-2012 06:42 PM
hydrometer readings Byrdbrewer Extract Brewing 8 05-20-2010 07:32 PM
Hydrometer readings. jonbomb Beginners Beer Brewing Forum 10 05-20-2010 12:34 AM
Hydrometer readings ChickenLuva Beginners Beer Brewing Forum 3 03-26-2009 02:45 PM
Hydrometer readings Lucky Dog Brewing Beginners Beer Brewing Forum 4 04-10-2007 11:03 PM