A yeast pitching question

[Damase]

I am working on getting the "correct" amount of cells to pitch into my wort, and would like to see if I am calculating this correctly, or am I way off in my thinking.
Knowns:
Need 1x10^6 cell/mL/P of yeast
a 30 bbl fermenter is 3515400 mL in size (30x31x3.78x1000)
P I am going for is 12

Therefore I need a total of 4.21848x10^13 cells pitched into this wort.

Is this correct? Or is my math just a little fuzzy (which I know it could be.)

Thanks for any help with this.

Damase

[Woolsocks]

Non-metric... so hard....

It looks like you're a little fuzzy....

31,684 x 10^9 seems to be the right answer, according to the calculator on Mr Malty.com, which uses the 10^6/mL/P rule. I find that to be quite a handy calculator.

[jarviw]

I don't actually understand what the MrMalty.com's calculator is doing...

Damase's calculation was correct, based on 1M cells/ml/P.

31,684 x 10^9 = 3.1684 x 10^13, which is calculated as "ale fermentation" on MrMalty.com, is probably based on 0.75M cells/ml/P. the "Hybrid fermentation" seems to be based on 1M.

how come ProMash doesn't come with a yeast calculator? brewhouse people don't like to talk to cellar guys?