Formula for amount of corn sugar

[Misplaced_Canuck]

I was looking to find the formula to find the amount of corn sugar for bottling and there was a ton of info out there... I just wanted to put this here since it might help someone in the future.

My formula is (in mixed measurements):

grams of corn sugar = gallons * (volume wanted - volume @ current temperature) * 15.15g

Or in Metric:

grams of corn sugar = Liters * (volume wanted - volume @ current temperature) * 4g

Or all in US:

ounces (weight) of corn sugar = gallons * (volume wanted - volume @ current temperature) * 0.55oz


So for my stout, of which I want to bottle 2gallons, @ 2.0 volumes:

g = 2gal x (2.0 - .85) * 15.5

== 35.65

I used the figures found on this website: http://byo.com/resources/carbonation

My beer is currently sitting @ 68F, which is 0.85 residual volumes.

I wish the residual CO2 amounts were linear but they aren't.

Let me know if I messed up the math and I'll fix it

M_C

 

[Nuggethead]

I'm to lazy, I just pull up Tasty Brew or Beer Smith calculators. They always work well for me.

 

[bob1852]

Or there's this from Palmer's book:

 

[Misplaced_Canuck]

That works too, but I was wanting a formula that would be simpler to use than a chart, then divide by 2.5, etc... The chart is for 5 gallons, I am bottling 2 gallons, etc.

M_C

Or there's this from Palmer's book: