Calculator cluster
Grind size & dialing in
Click conversion between grinders, espresso dial-in, TDS, extraction yield and burr life.
Grind size & dialing in
Espresso Dial-In Calculator
From dose, yield, time and a sour–bitter taste call, get a suggested yield, grind direction and a time hint. Taste first; the numbers follow.
Grind size & dialing in
Espresso Extraction Yield Calculator
Compute extraction yield and brew ratio from refractometer TDS, basket dose and beverage mass. EY% = TDS% × yield / dose.
Grind size & dialing in
Grind Size Converter
Convert grinder clicks between machines into estimated microns and whether that setting looks like espresso or filter. A map, not a laser diffraction lab.
Grind size & dialing in
Grinder Burr Lifespan Calculator
Estimate remaining burr life in kilograms and days from daily dose, rated life and kilograms already ground. A planning number, not a steel autopsy.
Grind size & dialing in
TDS Target Calculator
Work backwards from dose, beverage yield and a target extraction yield to the TDS your refractometer should read. Strength is not extraction.
Other clusters
- Brew ratios & dosingCoffee-to-water ratios, espresso yield, cold brew dilution, flash brew and Americano balance.
- Water chemistryBarista water recipes, GH/KH, descaling intervals, acidity buffering and brew bypass.
- 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.