Coffee Ratio Calculator

How to Use This Calculator

1. Enter the number of cups (8 oz each).
2. Select your brew method.
3. Choose your preferred strength — light (1:18), medium (1:16), or strong (1:14).
4. The calculator shows coffee in grams and water in ml.

Formula

Example

Frequently Asked Questions

• What is the standard coffee to water ratio? ▼
  The SCA (Specialty Coffee Association) Golden Cup standard is 55–65g of coffee per liter of water (1:15 to 1:18 ratio). A practical starting point is 1:16 — about 15g coffee per 240ml (8 oz) cup.
• How many grams of coffee per cup? ▼
  For an 8 oz cup at 1:16 ratio: 240ml ÷ 16 = 15g coffee. For a stronger 1:14 ratio: ~17g. For a lighter 1:18: ~13g. Using a scale gives much more consistent results than measuring by scoops.
• What ratio should I use for cold brew? ▼
  Cold brew uses a much higher coffee ratio — typically 1:8 (regular strength) or 1:4 (concentrate). Use coarse grounds and steep 12–24 hours in the refrigerator. Dilute concentrate 1:1 before drinking.
• What grind size should I use? ▼
  Drip: medium. Pour over: medium-fine. French press: coarse. AeroPress: medium-fine to fine. Grind size affects extraction rate — finer grinds extract faster and stronger.

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