Brewing tool
Mash Water Calculator
Plan mash and sparge water before brew day.
Guide
Before you start
Enter the grain weight, your preferred mash thickness, and the pre-boil volume you want in the kettle.
Calculator
Enter your values
Method
How this is estimated
The tool estimates total liquor from target pre-boil volume, grain absorption, and equipment loss. Strike water comes from mash thickness, and the remaining liquor becomes sparge water.
total liquor ≈ pre-boil volume + grain absorption + equipment loss
Safety and limits
A few notes
This is a planning estimate. Your crush, grain type, dead space, and process losses can change the real volumes.
Use accurate measurements for the best estimate.