Height to volume tool

Hey, I'm loving my copy of beertools 2.0 it puts all the things I used to use separately in one place, the only thing I'm missing is something to convert the height in my pots and fermenters into the volume.

It would be a really simple thing to implement, all it needs is the brewer to set up the diameter of their pots and fermenters then a box to type in the measured height of liquid and then run that through the formula for the volume of a cylinder (pi * radius2 * height).

If you wanted to make it slightly more complex but super awesome you could even put in some code to take account of temperature.

Please do this then I'll never need to look anywhere but beertools for all my calculation needs!

+1.  I created a note with pre-calculated values for my 9.5 gallon pot.

Volume = Pi * (Diameter / 2) ^ 2 * Height (divide by 231 to get gallons)

Height in 9.5 gallon pot = Volume / (PI * (Diameter / 2) ^ 2)
(multiply by 231 to get inches)

Diameter of 9.5 gallon pot: 13.5 inches.

2.75 gallons  -->  4 7/16 inches
4.00 gallons --> 6  7/16 inches
4.25 gallons --> 6  7/8 inches
4.50 gallons --> 7  1/4 inches
4.75 gallons --> 7  11/16 inches
5.00 gallons --> 8  1/16 inches
5.25 gallons --> 8  1/2 inches
5.50 gallons --> 8  7/8 inches
5.75 gallons --> 9  1/4 inches
6.00 gallons --> 9 11/16 inches
6.25 gallons --> 10  1/16 inches
6.50 gallons --> 10  1/2 inches
6.75 gallons --> 11  7/8 inches
7.00 gallons --> 11  5/16 inches
7.25 gallons --> 11  11/16 inches
7.50 gallons --> 12  1/8 inches
7.75 gallons --> 12 1/2 inches

Yeah I have a similar sheet but I'd love a tool to work it out on beersmith so I'm not searching around for my sheet all the time.

I agree. This would be sweet!

merfizle said:

4.00 gallons --> 6  7/16 inches
4.25 gallons --> 6  7/8 inches
4.50 gallons --> 7  1/4 inches
4.75 gallons --> 7  11/16 inches
5.00 gallons --> 8  1/16 inches
5.25 gallons --> 8  1/2 inches
5.50 gallons --> 8  7/8 inches
5.75 gallons --> 9  1/4 inches
6.00 gallons --> 9 11/16 inches
6.25 gallons --> 10  1/16 inches
6.50 gallons --> 10  1/2 inches
6.75 gallons --> 11  7/8 inches
7.00 gallons --> 11  5/16 inches
7.25 gallons --> 11  11/16 inches
7.50 gallons --> 12  1/8 inches
7.75 gallons --> 12 1/2 inches

Click to expand...

Many of these gradations are ~half-inch differences measured in 1/8's.  How do you measure this on brewday?  How do you verify this so closely?

5.50 gallons --> 8  7/8 inches


I just have a dowel with inches marked, but would love to have this degree of accuracy in my MLT. 

Maltlicker, first thing I do is I use the formula and convert the decimal portion of the height to a fraction with this calculator:

http://www2.whidbey.net/ohmsmath/webwork/javascript/decin2fr.html

I convert to the closest 1/16 of an inch.

Then, I use a sanitized tape measure and just stick it in the brewpot/wort.

I have all my notes printed off and keep a brew book/log that I always have with me when I brew.  My volume readings have been very close.

Mark