Calculator cluster
Water chemistry
Barista water recipes, GH/KH, descaling intervals, acidity buffering and brew bypass.
Water chemistry
Barista Water Recipe Calculator
Build brewing water from target GH and KH as ppm CaCO₃. Get Epsom salt and baking soda in milligrams and grams for a chosen volume.
Water chemistry
Coffee Buffer & Acidity Calculator
Compare water KH to brew TDS for a simple buffer index and whether acidity is likely muted. Alkalinity fights acids; it does not erase roast.
Water chemistry
Descaling Frequency Calculator
Estimate days and shots until a descale from water hardness, daily shots and boiler volume. A maintenance schedule, not a plumber.
Water chemistry
Water Bypass Calculator
Add bypass water to a brewed batch to hit a lower target TDS. Beverage mass goes up; extraction yield of the grounds stays where it was.
Water chemistry
Water Hardness & Alkalinity Calculator
Convert GH and KH from ppm as CaCO₃ into German degrees and their ratio. Useful when a test kit and a coffee recipe disagree on units.
Other clusters
- Brew ratios & dosingCoffee-to-water ratios, espresso yield, cold brew dilution, flash brew and Americano balance.
- Grind size & dialing inClick conversion between grinders, espresso dial-in, TDS, extraction yield and burr life.
- Coffee roastingWeight loss, rate of rise, development time ratio, green density and degassing windows.
- Health, economics & lifestyleCaffeine estimates, daily limits, cafe vs home ROI, cost per cup and batch scaling.
- Advanced toolsMilk steaming, pump pressure and flow, thermal loss, siphon steep time and moka capacity.