AI Calculator
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Coffee Water Ratio Calculator.
Calculate the amount of water needed for your desired coffee-to-water ratio, or adjust the ratio to match your brew strength preference.
Your inputs
How it works
- 1
Enter the amount of coffee you plan to use in grams.
- 2
Choose your desired coffee-to-water ratio (e.g., 16 means 1 part coffee to 16 parts water).
- 3
The calculator multiplies coffee grams by the ratio to get the water volume in milliliters.
- 4
Review the secondary results for water in cups and ounces for convenience.
coffee_grams * ratioFrequently asked
What is the standard coffee-to-water ratio?
A common starting point is 1:16 (1 gram of coffee per 16 ml of water), which yields a balanced cup. Adjust to 1:15 for stronger or 1:17 for milder coffee.
Does the ratio change with brew method?
Yes. Espresso uses a much higher ratio (1:2 to 1:3), while cold brew often uses 1:8 to 1:12. This calculator is best for drip, pour-over, and French press.
Why is water measured in milliliters?
1 gram of water equals 1 milliliter, so the calculation is straightforward. For other units, use the provided conversions.
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Results
Formula checkedAI-generated estimate for general guidance only — not professional advice.