1. Choose your brew method
2. Fine-tune the ratio
Drag to override the preset ratio.
Stronger
Weaker
1 : 16
Pour-over
Intense / ristretto
Very light
3. Enter your amount
cup(s) (1 cup = 250 ml)
You need
480
grams of water (≈ ml)
Coffee: 30 g
Ratio: 1 : 16
cup(s) (1 cup = 250 ml)
You need
30.0
grams of coffee
Water: 480 g
Ratio: 1 : 16
How to use this calculator
- 1 Pick a brew method to load its recommended ratio. The ratio is the number of grams of water per gram of coffee — so 1:16 means 16 g water for every 1 g of coffee.
- 2 Slide to adjust. Lower numbers (1:8) brew stronger and more concentrated; higher numbers (1:17+) brew lighter and more delicate. Cold brew is coarse-ground and concentrated on purpose — you'll dilute it later.
- 3 Enter what you have. If you've weighed your coffee, type it in the "I know my coffee" tab — you'll get the exact water amount. If you're filling a specific vessel, switch tabs and enter the water volume instead.
- 4 Scale by cups. The cups helper assumes 1 cup = 250 ml (a common pour-over serving). Adjust freely — grams and cups sync automatically.
Quick reference: 1 cup (250 ml)
How much coffee you need for one 250 ml serving at the standard ratio.
| Method | Ratio | Coffee for 250 ml | Strength |
|---|---|---|---|
| Espresso | 1 : 2 | 125 g | Intense |
| Cold brew | 1 : 8 | 31.3 g | Strong |
| AeroPress | 1 : 14 | 17.9 g | Medium-strong |
| French press | 1 : 15 | 16.7 g | Medium |
| Pour-over | 1 : 16 | 15.6 g | Balanced |
| Drip | 1 : 17 | 14.7 g | Light |