Free Coffee Dose calculator with clear step-by-step results.
The brew ratio sets the dose, but spent grounds retain roughly two millilitres of water per gram of coffee, so the volume in the cup is always less than the water you poured. Accounting for that retention is why a 1:16 brew tastes stronger than the ratio alone implies.
Dose
Coffee grams = brew water ml / ratio denominator
Beverage yield
Yield ml = brew water - coffee grams x absorption per gram
1:16 to 1:17 for pour-over and 1:15 for a fuller-bodied immersion brew. Move in half-point steps - the difference between 1:16 and 1:15 is clearly audible in the cup.
No, but it changes extraction. Keep dose and ratio fixed and adjust grind to control how much of that coffee actually dissolves.