ESPRESSO RATIO CALCULATOR
Turn dose into a shot target.
Choose the dry dose and brew ratio. The calculator gives you the beverage mass to stop at—without pretending that one recipe fits every coffee.
THE FORMULA
How this receipt is calculated
Target beverage yield (g) = dry coffee dose (g) × brew ratio. Average flow (g/sec) = target yield ÷ target shot time.
ASSUMPTIONS
- The output is beverage mass in grams, not liquid volume in milliliters.
- The ratio is descriptive, not a guarantee of good extraction; taste remains the final test.
- Average flow is a simple whole-shot average and does not describe changing flow during preinfusion or extraction.
Reviewed 2026-07-21 · formula contract 1.1.0
SOURCE RECEIPT
Inputs, arithmetic, and limits stay visible.
These calculators use only the values shown in the form and the formula above. They do not silently substitute retailer prices or promise savings, extraction quality, or equipment life.
QUICK ANSWERS
Frequently asked questions
What does a 1:2 espresso ratio mean?
It means the beverage yield weighs twice the dry coffee dose. An 18-gram dose at 1:2 targets 36 grams of espresso in the cup.
Should espresso yield be measured in grams or milliliters?
Use grams when dialing in. Crema changes apparent volume, while a scale gives a repeatable beverage mass. This calculator therefore does not convert the result to milliliters.
Does a target time determine the right espresso ratio?
No. Ratio defines dose and beverage yield. Time, taste, flow, grind setting, and puck preparation help diagnose the extraction. The time field here reports average flow but does not alter the yield formula.