Yeast Calculator

Calculate how many yeast packages to add or how big of a starter to make

PurePitch

Formula for calculating viability for White Labs PurePitch® yeast packets is based on official data found here: https://www.whitelabs.com/news/purepitch-shelf-life

Average viability of PurePitch® pure liquid yeast over a period of six months:

Time

Viability

1 month

99.21%

2 month

98.05%

3 month

90.26%

4 months

84.28%

5 months

79.35%

6 months

71.59%