Coffee Brew Ratio & Water-to-Coffee Calculator
Calculate golden cup brew ratios (1:15, 1:16), exact coffee grams, water volume, blooming water, grind size, and extraction time for V60, French Press, Chemex, and AeroPress.
Formula
Coffee (g) = Water (ml) / Ratio | Bloom Water = Coffee (g) × 2.5
Source / method note
Based on Specialty Coffee Association (SCA) golden cup brewing ratio standards.
Legal / official rate note
Adjust coffee-to-water ratio slightly based on roast level (light, medium, dark) and personal palate preference.
Frequently Asked Questions
What is the Golden Cup coffee ratio?
The Specialty Coffee Association (SCA) defines the ideal golden ratio as approximately 1:15 to 1:17 (around 55g to 65g coffee per 1 Liter of water).