Brewing for a crowd means scaling your ratio up to a large volume. This formula finds the total coffee for any number of cups.
Coffee (g) = (Cups × Size) ÷ Ratio
What the terms mean
| Symbol | Meaning |
|---|---|
| Coffee | Total coffee, in grams |
| Cups | Number of cups |
| Size | Cup size, in ml |
| Ratio | Water-to-coffee ratio |
Worked example
For 12 cups of 240 ml at a 1:16 ratio: (12 × 240) ÷ 16 = 180 g of coffee, with about 2,880 ml of water.
Account for absorption. Grounds soak up roughly 2 ml of water per gram, so a large batch yields a little less liquid than the water you added. Add a touch extra for big batches.
See the Coffee Batch Calculator and the Coffee for a Crowd Calculator.