Coffee Brew Ratio Calculator
Get the perfect coffee-to-water ratio for any brew method. Instant results, no guesswork.
Brew Method
I know my…
Ratio (1 : X)
Coffee
18g
Water
36ml
Ratio
1 : 2
Yield
36 ml
Cups (240ml)
0.15
Strength
Strong
Standard Brew Ratios at a Glance
Based on Specialty Coffee Association (SCA) guidelines.
| Method | Ratio |
|---|---|
| Espresso | 1 : 2 |
| Moka Pot | 1 : 7 |
| AeroPress | 1 : 6 – 1:8 |
| Pour Over | 1 : 15 – 1:17 |
| French Press | 1 : 15 |
| Cold Brew | 1 : 5 – 1:8 |
Frequently Asked Questions
What is the golden ratio for coffee?
The Specialty Coffee Association (SCA) recommends a ratio of 1:15 to 1:18 for most filter methods. That means 1 gram of coffee for every 15–18 grams of water. For a 300ml cup, use 17–20g of coffee.
What is the standard espresso ratio?
A classic espresso uses a 1:2 ratio — 18g of ground coffee produces ~36g of liquid espresso. A ristretto is 1:1 (18g in, 18g out) and a lungo is 1:3 (18g in, 54g out).
How much coffee do I use for a French press?
French press works best at a 1:15 ratio. For a 350ml press, use ~23g of coarsely ground coffee. For a full 1L press, use ~67g.
What ratio should I use for cold brew?
Cold brew concentrate uses a strong 1:5 ratio. For regular-strength cold brew, use 1:8. Cold brew steeps for 12–24 hours in the fridge.