Coffee Brew Ratio
Calculate brew water from coffee dose and a chosen water ratio.
Your numbers
Brew water
Water input, not final beverage yield; retention and evaporation are excluded.
Scenario comparison
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Formula
Use W = Cr. C is coffee mass in g and r is water grams per gram of coffee. W is required water mass in g; the ratio compares water with coffee.
Calculate brew water from coffee dose and a chosen water ratio.
Worked example
- Coffee dose (g)
- 20
- Water grams per gram of coffee
- 15
- Brew water
- 300 g
- Combined starting mass
- 320 g
Scope and limitations
Water input, not final beverage yield; retention and evaporation are excluded.
Inputs are checked for missing values and allowed ranges. A result outside the finite numeric range is not displayed. Rounding affects display, while the calculation uses the model’s numeric precision.
Check your units and assumptions before relying on a result. Changing a label does not convert a currency or physical unit.
Formula version: e7f6a77ae852 · Example checked: