Home Brewing Water Chemistry Calculator
Water chemistry has a big impact on beer flavor. Enter your batch size and desired mineral bumps to estimate how much gypsum, calcium chloride, and Epsom salt to add.
Total Salt Additions
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Gypsum (g)—
Calcium Chloride (g)—
Epsom Salt (g)—
Estimated Total Calcium (ppm)—
About this calculator
Estimate mineral salt additions needed to adjust your brewing water profile for a target beer style.
Frequently Asked Questions
Why does water chemistry matter for brewing?
Mineral content affects mash pH, yeast health, and the perceived balance between malt sweetness and hop bitterness.
What does sulfate do to beer flavor?
Higher sulfate levels accentuate hop bitterness, making it sharper and drier - popular for IPAs.
What does chloride do to beer flavor?
Chloride enhances malt sweetness and gives a fuller, rounder mouthfeel - popular for malty styles.