Coffee to Water Ratio Table: Coffee needed by Water
Reference table of coffee needed for Coffee to Water Ratio across a range of water values — exact, engine-computed figures you can read off at a glance.
Coffee to Water Ratio Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Coffee needed
31.3
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Coffee to Water Ratio Calculator
The Coffee to Water Ratio Calculator works out your coffee needed in an instant. Enter water and ratio (1 g coffee : x ml water) and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the water.
- Enter the ratio (1 g coffee : x ml water).
- Read off your coffee needed — the calculator updates automatically, with no button to press.
Formula
The Coffee to Water Ratio Calculator uses the formula:
Coffee needed = Water ÷ Ratio (1 g coffee : X ml water)
Worked example
For example, with water of 500 ml and ratio (1 g coffee : x ml water) of 16, the coffee needed is 31.3.
| Water | 500 ml |
|---|---|
| Ratio (1 g coffee : X ml water) | 16 |
| Coffee needed | 31.3 |
|---|
Results are estimates for educational use, not professional advice.
Key terms explained
- Ratio
- A comparison of two quantities showing how many times one contains the other.
Frequently asked questions
Divide the water in ml by your ratio. At a 1:16 ratio, 500 ml of water needs about 31 grams of coffee.
Between 1:15 and 1:18 suits most filter coffee. A lower number is stronger; a higher number is milder.
For consistency, yes. Weighing in grams is far more reliable than scoops, which vary with grind and bean.
Espresso uses much tighter ratios around 1:2. This tool suits filter, pour-over and French press brewing.
The Coffee to Water Ratio Calculator uses the formula: Coffee needed = Water ÷ Ratio (1 g coffee : X ml water). For example, with water of 500 ml and ratio (1 g coffee : x ml water) of 16, the coffee needed is 31.3.
Enter the water. Enter the ratio (1 g coffee : x ml water). Read off your coffee needed — the calculator updates automatically, with no button to press.
Related guides
How to Calculate Coffee to Water Ratio: Formula, Steps & Examples
Learn how to calculate Coffee to Water Ratio — the formula explained step by step, with worked examples and a free calculator to check your answer.