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.
FAQ
What dose should I start with? Whatever your basket is rated for, commonly 18g for a modern double. The calculator works from your basket size and the 1:2 starting ratio cited on this page.
Why does dose matter? Dose sets the resistance the water meets. Too much chokes the machine, too little gushes. Matching dose to basket is the first step of dialing in.
Does this replace weighing shots? No. A scale is the one non-negotiable espresso accessory; the calculator just tells you what to aim for.