Coffee-to-Water Ratio Chart: The Golden Ratio for Every Brew
If your coffee tastes weak one morning and bitter the next, the culprit usually isn't your beans — it's your ratio. Nail the amount of coffee to water and everything else falls into place.
The golden ratio
The widely-accepted "golden ratio" is 1:16 to 1:18 — one gram of coffee for every 16–18 grams (ml) of water. Want it stronger? Move toward 1:15. Lighter? Head to 1:18.
Quick ratio chart
- French press: 1:15 — bold and full-bodied
- Pour-over / drip: 1:16–1:17 — clean and balanced
- Espresso: 1:2 — 18g in, ~36g out
- Cold brew: 1:8 concentrate, diluted to taste
A simple example
For a single mug (about 350ml of water), 1:17 means roughly 21g of coffee — about four level tablespoons of grounds. A cheap kitchen scale is the biggest upgrade you can make to your cup.
Ratio is only half the story
Once your ratio is dialed in, grind size does the rest — too fine turns bitter, too coarse turns sour. See our grind guide to match your grind to your brewer, and our breakdown of French press vs pour-over vs espresso to pick your method.