How to use this calculator
Calculate water from coffee dose and chosen ratio. Enter coffee dose (g), water per gram of coffee. The result updates when you change an input. To compare two sets of inputs, save scenario A, then enter the second set; the result panel shows the difference.
Formula and limits
Water mass = coffee mass × chosen water-to-coffee ratio. This is a recipe ratio, not a brewing recommendation.
Worked example
The following example uses the calculator’s starting values. It is an illustration of the method, not a recommended target.
| Input | Example value |
|---|---|
| Coffee dose (g) | 20 |
| Water per gram of coffee | 16 |
Water (g): 320
Interpreting your result
Keep ingredient units consistent and verify actual recipe quantities. Scaling ingredients does not automatically scale cooking time, temperature, or food-safety requirements.
Comparing alternatives
Save the first result as scenario A, then change one input. The comparison shows the numeric difference; it does not label either result as better. Choose inputs that describe realistic alternatives. Values shown on screen are rounded, so calculations from rounded intermediate results may differ slightly.