Coffee Ratio Calculator
Find the exact coffee-to-water ratio: grams of coffee to ml of water, or the reverse. Golden-ratio recipes included.
About this tool
Enter your coffee grams and pick a brew ratio to get the exact water amount — 1:16, 1:14 or 1:18, with the cups equivalent.
Great coffee is ratio discipline: the same beans taste boring at 1:20 and muddy at 1:12. Once your scale knows the number, every cup is repeatable — that is the whole game.
FAQ
What ratio should I start with?
1:16 by weight is the balanced default — 20 g of coffee to 320 ml of water. Adjust 1-2 points by taste.
Why weight, not scoops?
A scoop varies 40-60% with grind and bean. Gram scales remove all randomness from brewing.
Does the ratio apply to espresso?
No — espresso is far stronger (about 1:2). The 1:14-1:18 range is filter, pour-over and drip.