Coffee Ratio Calculator
Work out how much coffee and water to use for pour-over, french press, drip, espresso, cold brew, or AeroPress, with editable ratios and grind hints.
Processed locally in your browser — nothing is uploaded.
Default for pour-over is 1:16.7. Edit to taste.
Enter an amount to see the coffee-to-water breakdown.
About Coffee Ratio Calculator
Pick a brew method and enter either your coffee dose or your water amount — the calculator solves for the other side using that method's typical ratio. The ratio itself stays editable, so once you know you like your pour-over a touch stronger than 1:16.7, you can dial it in and keep it.
Each method also shows a grind-size hint, because the right ratio with the wrong grind still brews a disappointing cup.
Common uses
- Scale a pour-over recipe from one cup to a full carafe
- Find the right dose for a french press you've never measured
- Convert a cold brew concentrate recipe to a different jar size
Example
Input
Pour-over · 340 g water · ratio 1:16.7
Output
20.4 g coffee, medium-fine grind
Limitations
- Ratios are starting points, not rules — roast level, grind, and taste all justify adjusting.
- Cup presets assume a 240 ml cup; espresso ratios describe beverage weight out, not tank water.