Espresso dose calculator: dose, ratio, yield

Enter any one number and the calculator fills the rest from the standard recipe: an 18g dose at a 1:2 ratio yields 36g of espresso in 25 to 30 seconds. Pure math, the same card baristas tape to the machine.

The reference recipes

Classic double: 18g at 1:2 for 36g. Tighter and denser: 1:1.8. Softer and bigger: 1:2.3 to 1:2.5. Full symptom table on the free dial-in cheat sheet, and the machine-by-machine fixes live in the troubleshooting hub.