Coffee Ratio Calculator

The Specialty Coffee Association's Golden Ratio suggests roughly 1 gram of coffee for every 15 to 18 grams of water as a starting point for a balanced brew, with room to adjust to taste.

Cold brew is typically made as a concentrate meant to be diluted with water or milk before drinking, so it's brewed much stronger (around 1:8) than a ready-to-drink hot coffee.

You can approximate with a standard coffee scoop (about 2 tablespoons, roughly 10–12 grams), but bean density varies by roast and grind, so a gram scale gives a more consistent result.