What is the best coffee to water ratio?
Quick answer
For most filter and pour-over coffee, start at 1:16 — that's 6.25 g of coffee per 100 ml of water (about 15 g for a 240 ml mug). French press is often a bit stronger at 1:15; cold brew concentrate uses a much tighter ratio like 1:8 before dilution. Weigh coffee in grams, not tablespoons.
Why ratio beats tablespoons
Coffee density changes with roast level and grind. Two tablespoons of dark roast can weigh less than light roast — so volume measures drift. Grams stay repeatable.
The Specialty Coffee Association's "golden cup" sits near 1:16 to 1:18 for drip-style brewing. That range is a starting point, not a law: adjust to taste.
Ratios by method (quick reference)
| Method | Typical ratio | Notes |
|---|---|---|
| Pour over / drip | 1:16 | Bloom first 30–45 s |
| French press | 1:15 | Immersion — slightly more coffee |
| AeroPress | 1:11 to 1:16 | Depends on recipe style |
| Cold brew concentrate | 1:8 | Dilute 1:1 before drinking |
| Espresso | 1:2 yield | 18 g in → ~36 g liquid out |
Use the coffee ratio calculator for exact grams.
Common questions
How much coffee for 4 cups? Four 240 ml cups ≈ 960 ml water. At 1:16, use about 60 g coffee.
How much coffee per cup? One 240 ml mug at 1:16 needs about 15 g coffee.
What if my coffee tastes weak? Use a bit more coffee (tighter ratio) or grind finer before adding more dose.
What if it tastes bitter? Try a coarser grind or slightly less coffee — often over-extraction, not "strong coffee."