Coffee to Water Ratio Calculator
Calculate the perfect coffee grounds to water ratio for any brewing method and cup size.
☕ Brewing📐 Coffee (g) = Water (mL) / Brew Ratio
Water amount
Water unit
Brew method
Please enter valid values.
Formula & Reference
| Variable | Formula | Units |
|---|---|---|
| Coffee to Water Ratio Calculator | Coffee (g) = Water (mL) / Brew Ratio | grams |
Step-by-Step Examples
Example 1
350mL Drip
350 mL drip medium.
- 350/16 = 21.9g (3.6 tbsp)
✓ 21.9g coffee
Example 2
French Press 600mL
600mL French press.
- 600/12 = 50g
✓ 50g coffee
Example 3
Cold Brew 500mL
500mL cold brew.
- 500/4 = 125g coarse grind, steep 12-24h
✓ 125g coffee
Real-World Applications
Coffee Enthusiasts
Perfect ratio for any brew method.
Home Baristas
Dial in your pour-over or French press.
Cafes
Accurate batch brew calculations.
Coffee Roasters
Help customers brew your coffee optimally.
Common Mistakes to Avoid
⚠️
Using tablespoons instead of grams
1 tbsp varies by grind size. Always use a scale for consistency.
⚠️
Water temperature
Brew at 195-205F for optimal extraction in all hot methods.
Frequently Asked Questions
Golden ratio for coffee? ▾
1:15 to 1:17 by weight. SCA recommends 55g per liter as a starting point.
How much for 12 cups? ▾
About 1800mL at 1:16 = 112.5g. One 12oz bag makes 6-8 pots.
Espresso ratio? ▾
18g grounds to 36g output (1:2) in 25-30 seconds.