How much coffee per cup
The answer depends on what a cup is. A coffee maker cup is usually 5 oz (150 ml), a measuring cup is 8 oz (240 ml), and a mug holds 10 to 12 oz. The table uses 1:16, which is 1 g of coffee for 16 g of water, and assumes 5 g per level tablespoon.
| Cups | 5 oz cups | 6 oz cups | 8 oz cups |
|---|---|---|---|
| 1 | 9.4 g 1.9 tbsp 150 ml | 11.3 g 2.3 tbsp 180 ml | 15 g 3 tbsp 240 ml |
| 2 | 18.8 g 3.8 tbsp 300 ml | 22.5 g 4.5 tbsp 360 ml | 30 g 6 tbsp 480 ml |
| 4 | 37.5 g 7.5 tbsp 600 ml | 45 g 9 tbsp 720 ml | 60 g 12 tbsp 960 ml |
| 6 | 56.3 g 11.3 tbsp 900 ml | 67.5 g 13.5 tbsp 1080 ml | 90 g 18 tbsp 1440 ml |
| 8 | 75 g 15 tbsp 1200 ml | 90 g 18 tbsp 1440 ml | 120 g 24 tbsp 1920 ml |
| 10 | 93.8 g 18.8 tbsp 1500 ml | 112.5 g 22.5 tbsp 1800 ml | 150 g 30 tbsp 2400 ml |
| 12 | 112.5 g 22.5 tbsp 1800 ml | 135 g 27 tbsp 2160 ml | 180 g 36 tbsp 2880 ml |
Why the cup size matters
Coffee makers count a cup as 5 oz, so a "12-cup" machine makes about 1.8 liters (60 oz), enough for five 12 oz mugs. If you use the line marks on the carafe, those are 5 oz marks too.
Grounds hold back about twice their weight in water, so a pot gives a little less coffee than the water you put in.
For a stronger cup use 1:15 and for a lighter one 1:17. The calculator takes any ratio and any amount.