BIAB water calculator

[bob352]

I created a brew in a bag online calculator for determining mash water amount and temperature.

http://www.copycalc.com/bob/BIAB

This is a simple calculator much like the other biab calcs out there.
Units are US gallons and fahrenheit temperature.

The calculator is open source. Feel free to copy and hack on it.
Let me know if you have any questions.

Bob

 

[wilserbrewer]

I like it..not sure how to use all the features...but I'll work at it...thanks!

<iframe width="861px" height="430px"
frameborder="0" allowTransparency="true"
style="background-color: transparent" scrolling="no"
src="http://www.copycalc.com/embed/bob/BIAB"></iframe>

 

[bob352]

I like it..not sure how to use all the features...but I'll work at it...thanks!

<iframe width="861px" height="430px"
frameborder="0" allowTransparency="true"
style="background-color: transparent" scrolling="no"
src="http://www.copycalc.com/embed/bob/BIAB"></iframe>

Let me know if I can help with understanding the features.
Or any improvements in general.

HBT won't let you embed raw html into forum posts.
Maybe someday if these online calculators become popular
we can get a special syntax to have them embedded.
It would be cool (at least to me) to be able to inline a calculator
in a post just like a static image.

Bob

 

[wilserbrewer]

Bob,

Using the calculator works great and is no problem, I'm a little IT challenged so saving it is my issue?

Can I save a file for each of my brews? Sort of a record of the brew day? Recipe formation and record keeping are my weak point and was thinking if I could use the calculator and save w/ the date, it would be an interesting and simple data file to keep, or am I off base again? thanks!
Mike

 

[bob352]

Can I save a file for each of my brews? Sort of a record of the brew day? Recipe formation and record keeping are my weak point and was thinking if I could use the calculator and save w/ the date, it would be an interesting and simple data file to keep, or am I off base again?
Mike

Yes, that will work.
Use the menu to the left of the calculator. "File > Save" will
save the data. And of course "File > Open" will retrieve it.

Another way is to use the "Summary" tab on the calculator and
just cut/paste the text into wordpad or whatever app you have locally.

Bob

 

[JohnSand]

Love it, thanks!

 

[happypanties]

Great job bob, nice tool!

 

[JoppaFarms]

Could you provide an option for using a set boil-off volume instead of percent? I know I boil off 1.0 gallons and math are hard

 

[bob352]

Love it, thanks!

Cool.

Great job bob, nice tool!

Glad you like it.

Bob

 

[wobdee]

Thanks, Bob, this will help me greatly.

 

[bob352]

Could you provide an option for using a set boil-off volume instead of percent? I know I boil off 1.0 gallons and math are hard

Instead of an option I did a quick hack and created a new calculator.

http://www.copycalc.com/bob/BIAB Fixed Boil Off

I also added an "Evaporation Rate" result. So if you change your batch
size or boil time you can easily switch to the regular BIAB calculator.

Enjoy,
Bob

 

[wobdee]

How'd you come up with the grain absorption? Is squeezing the grain factored in as well?

 

[JoppaFarms]

Instead of an option I did a quick hack and created a new calculator.

http://www.copycalc.com/bob/BIAB%20Fixed%20Boil%20Off

I also added an "Evaporation Rate" result. So if you change your batch
size or boil time you can easily switch to the regular BIAB calculator.

Enjoy,
Bob

Awesome! I'll check it out tonight! (P.S. that was fast!!)

 

[bob352]

How'd you come up with the grain absorption? Is squeezing the grain factored in as well?

0.07 gallons/lb absorption is a common default value for biab.
For a hard squeeze it is probably too high.

Bob

 

[wobdee]

0.07 gallons/lb absorption is a common default value for biab.
For a hard squeeze it is probably too high.

Bob

Ok, thanks, I'll prolly try cutting that in half.