Mash & Sparge Water Calculator

A simple and convenient tool for calculating mash and sparge water you’ll need to insure a successful brew day. Happy brewing!

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Batch Volume: ▲ ▼ gallons Variable
Amount of Grain: ▲ ▼ pounds Variable
Length of Boil: ▲ ▼ minutes Variable
Trub Loss: ▲ ▼ gallons Variable
Equipment Loss: ▲ ▼ gallons Variable
Thickness of Mash: ▲ ▼ quarts/pounds Variable
Grain Room Temperature: ▲ ▼ ° Fahrenheit Variable
Target Mash Temperature: ▲ ▼ ° Fahrenheit Variable
Wort Shrinkage Factor: ▲ ▼ % Standard 4%
Grain Absorption Rate: ▲ ▼ gallons/pounds Standard 0.13 gal/lbs
Evaporation Rate: ▲ ▼ %/hour Standard 1-5%/hour
Total Water Needed:
Mash Water Needed:
Sparge Water Needed:
Pre-Boiled Wort: