Coffee Brew Ratio Calculator
Volume I · May 2026 · 712 words
The brew ratio — grams of coffee to milliliters of water — is the single most important variable in coffee extraction after grind size. This calculator follows the Specialty Coffee Association Golden Cup standard of 55 g/L (±10%) and provides target ratios for pour-over, French press, and espresso extraction.
1:
OR enter coffee weight instead:
Coffee needed—
Water needed (from coffee weight)—
Concentration (g/L)—
Brewed coffee output—
| Method | Typical Ratio | Coffee (g) per 300 mL |
|---|---|---|
| Pour-over | 1:16 | 18.8 g |
| French press | 1:15 | 20.0 g |
| AeroPress | 1:14 | 21.4 g |
| Espresso (ristretto) | 1:1.5 | 200 g/L input |
| Espresso (normale) | 1:2 | 18 g in → 36 g out |
| Cold brew concentrate | 1:5 | 60 g |
| SCA Golden Cup | 1:16.7 | 55 g/L ±10% |