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Coffee Ratio Calculator
Grams coffee to water.
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About Coffee Ratio Calculator
Pick a brew ratio and dose to get water weight, or scale from water amount.
What is the golden coffee to water ratio?
Most brew methods land between 1:15 and 1:17, meaning 1 gram of coffee for every 15 to 17 grams of water. This calculator ships those presets and Espresso at 1:2, so start in the golden range and adjust stronger or milder to taste.
Which ratio suits each brew method?
French press and other immersion brews sit happily at the milder end around 1:15 to 1:17, while Espresso runs concentrated near 1:2. Pick your method preset above and the calculator converts dose to water weight, or works backwards from the water you have.
📐 Methodology & Reference Accuracy:
Calculations, formulas, and conversions execute locally in your web browser. Output models are benchmarked against official reference standards and updated for 2026.
🔒 This tool runs entirely in your browser. Nothing is uploaded or stored.
Background reading: Coffee Brew Ratio on Wikipedia. More: all calculators.
Frequently Asked Questions about Coffee Ratio Calculator
What is the best coffee to water ratio?
Start with 1:16, the middle of the golden 1:15 to 1:17 range: 1 gram of coffee per 16 grams of water. Go stronger toward 1:15 or milder toward 1:17 based on taste, and use 1:2 for Espresso.
How much coffee do I need for French press?
Choose the French press preset, enter how many cups or grams of water you are brewing with, and the calculator gives the matching coffee dose in grams. A typical 1-litre press at 1:16 needs about 62 grams.
How do I scale my recipe from the water amount?
Enter your water weight and pick a ratio: the calculator divides by the ratio to give the coffee dose. For example 500 grams of water at 1:16 needs about 31 grams of coffee.
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