Coffee Dose
Free Coffee Dose calculator with clear step-by-step results.
About Coffee Dose
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.
Formulas
Dose
Coffee grams = brew water ml / ratio denominator
Beverage yield
Yield ml = brew water - coffee grams x absorption per gram
Worked example
With the default values below, Coffee Dose returns Coffee to grind of 31.3. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Brew waterminimum 10 ml
- 500 ml
- Coffee to water ratio (1 : x)accepts 8–25
- 16
- Water retained by the groundsaccepts 0–4 ml/g
- 2 ml/g
Results
- Coffee to grind
- 31.3 g
- Beverage in the cup
- 438 ml
- Water held in the spent grounds
- 63 ml
- Dose per litre of beverage
- 71.4 g/L
Step by step
- 1Values used
- 2Dose
- 3Beverage yield
- 4Coffee to grind= 31.3 g
- 5Beverage in the cup= 438 ml
- 6Water held in the spent grounds= 63 ml
- 7Dose per litre of beverage= 71.4 g/L
Assumptions and limits
- The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax or compounding frequency into account.
- Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
What ratio should I start from?
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.
Does grind size change the dose?
No, but it changes extraction. Keep dose and ratio fixed and adjust grind to control how much of that coffee actually dissolves.