How much yeast?

[mesa4234]

I am planning on brewing the Thunderstruck pumpkin extract version this evening. The recipe calls for a 6 gallon final volume. I only picked up 1 vial of yeast not thinking that I was going to end up with 6 gallons. Should I be alright with 1 vial?

 

[duboman]

I am planning on brewing the Thunderstruck pumpkin extract version this evening. The recipe calls for a 6 gallon final volume. I only picked up 1 vial of yeast not thinking that I was going to end up with 6 gallons. Should I be alright with 1 vial?

Www.yeastcalc.com
Www.mrmalty.com
Plug in the numbers for your beer and yeast and it will tell you how big a starter you need or how many packs to pitch