The Grind CalcFree online tool
Drip coffee to water ratio
Auto-drip machines work well at a 1:16 coffee to water ratio — about 60 g of coffee per liter of water. Note that “cup” lines on carafes are often 5 oz, smaller than a standard US cup.
Drip coffee maker
Coffee to water ratio
Coffee
20 g
4 tbsp
Water
320 ml
10.8 fl oz
Cups
1.35
US cups
Ratio
1:16
by weight
How the drip coffee maker ratio works
Drip coffee ratio is coffee-to-water by weight: at 1:16, use about 15 g (roughly 3 tablespoons) per 8 oz of water in the tank. Carafe “cups” are usually 5 oz (148 ml), so a 12-cup brew is about 1.8 L and needs ~110 g of coffee — not 12 full mugs of grounds. If the pot tastes weak, check the cup size first, then grind slightly finer.
Drip coffee maker tips
- Use a medium grind, similar in texture to table salt.
- A 12-cup carafe is usually about 1.8 L — roughly 110 g of coffee at 1:16.
- If your machine brews fast and weak, grind slightly finer instead of adding coffee.
How much coffee for a drip coffee maker?
Coffee per carafe at 1:16. Carafe “cups” are 5 oz (148 ml), smaller than a standard US cup.
| Carafe size | Coffee | Water |
|---|---|---|
| 4 cups | 36.9 g (7.4 tbsp) | 590 ml (2.49 cups) |
| 6 cups | 55.6 g (11.1 tbsp) | 890 ml (3.76 cups) |
| 10 cups | 92.5 g (18.5 tbsp) | 1480 ml (6.24 cups) |
| 12 cups | 110.9 g (22.2 tbsp) | 1775 ml (7.49 cups) |
Compare every method in the coffee to water ratio chart or check the grind size chart for Drip coffee maker.
Frequently asked questions
What is the drip coffee ratio?+
Use 1:16 as a starting point — about 60 g of coffee per liter of water. That is roughly 15 g (3 tablespoons) per standard 8 oz cup of water in the tank.
How many tablespoons of coffee for a 12-cup coffee maker?+
A “12-cup” carafe is usually about 1.8 L (12 × 5 oz cups). At 1:16 that needs about 110 g of coffee — around 22 level tablespoons. Halve it for a 6-cup brew.
Why does my drip coffee taste weak?+
Usually too little coffee or too coarse a grind. Check that you are using about 15 g per 240 ml of water, then grind slightly finer. Carafe cup markings are 5 oz, not 8 oz, which throws off many recipes.
What grind size for a drip coffee maker?+
Medium — similar to table salt. Flat-bottom baskets can go slightly finer than cone-shaped baskets. If coffee tastes bitter, coarsen the grind; if sour or weak, go finer.