Author Topic: Pct Alcohol  (Read 1523 times)

Offline KB

  • BeerSmith Brewer
  • ***
  • Posts: 26
  • My homebrew rocks!
Pct Alcohol
« on: March 26, 2017, 02:26:06 PM »
Getting used to BeerSmith as I've used and enjoyed ProMash for a long, long time.

Calculating ABV for a peach mead I recently made. Took temp and hydro readings and adjusted for hydro temp calibration.

I thought ABV calculation was a simple matter and should calculate the same ABV/ABW if the input OG and FG are identical.

Not so.

Beersmith gives me slightly different numbers than ProMash. Why?

Please see the 2 attached images.


Offline brewfun

  • BeerSmith Grandmaster Brewer
  • *****
  • Posts: 2215
  • STAND BACK! I'm going to try Science!
Re: Pct Alcohol
« Reply #1 on: March 26, 2017, 08:40:50 PM »
I don't think there is anything more than rounding error between the two programs.


Also, I don't think Promash has been updated in over 10 years.

Beer Appreciation is the space between pints.

Offline KB

  • BeerSmith Brewer
  • ***
  • Posts: 26
  • My homebrew rocks!
Re: Pct Alcohol
« Reply #2 on: March 27, 2017, 06:28:59 PM »
What method does Beersmith use to calculate ABV?

ABV = (OG - FG) / 131.25

or

ABV = (ABW * (FG/.794))

or some other calculation?

 

modification