For a full 12 cup drip coffee maker, use about 98 to 117 g of ground coffee, based on the Specialty Coffee Association's Golden Cup ratio of 55 g per liter. The range exists because a coffee maker "cup" is only about 5 to 6 oz of water, so a 12 cup pot holds 60 to 72 fl oz, not 96. That's the real answer to how much coffee for 12 cups; for 8 cups use about 65 to 78 g, and for 4 cups about 33 to 39 g.
| Cups on the carafe | Water (5 oz cups) | Coffee | Water (6 oz cups) | Coffee |
|---|---|---|---|---|
| 4 | 591 ml | 32.5 g | 710 ml | 39.0 g |
| 6 | 887 ml | 48.8 g | 1,065 ml | 58.6 g |
| 8 | 1,183 ml | 65.1 g | 1,420 ml | 78.1 g |
| 10 | 1,479 ml | 81.3 g | 1,774 ml | 97.6 g |
| 12 | 1,774 ml | 97.6 g | 2,129 ml | 117.1 g |
What a coffee maker "cup" really holds
This is where most people go wrong. The cup lines on a drip machine aren't 8 oz measuring cups. They're closer to 5 or 6 fl oz each, depending on the brand. So a "12 cup" machine makes about 60 to 72 fl oz of coffee, which is roughly 1.8 to 2.1 liters.
If you scoop coffee as though each cup were 8 oz, you'll end up with a much stronger pot than you meant to. Check your manual for the cup size, or fill the reservoir to the 12 line once, pour it into a measuring cup, and see what you get. Since 1 ml of water weighs about 1 g, you can also weigh it.
How much coffee for 12 cups at different strengths
The SCA ratio is 55 g per liter, give or take 10 percent. That window, plus the slightly stronger 1:15 to 1:17 range Clive Coffee gives for filter coffee, covers most tastes. For a 12 cup pot with 5 oz cups (about 1,774 ml of water):
- Lighter (49.5 g per liter, the low end of the SCA range): about 87.8 g
- Golden Cup middle (55 g per liter): about 97.6 g
- Bolder (1:15): about 118.3 g
With 6 oz cups (about 2,129 ml), the same three strengths come to about 105.4 g, 117.1 g and 142.0 g. Pick one, brew it a few days in a row, and adjust in small steps.
How to measure coffee for a drip machine
- Find your real water amount, in ml or grams, for the number of cups you're brewing.
- Multiply by 0.055 to get grams of coffee at the SCA ratio. For 1,774 ml, that's 97.6 g.
- Set the filter basket on a scale, zero it, and add the grounds. Or weigh the beans before grinding.
- Use a medium grind. The SCA lists 4 to 6 minutes of contact time for a drip grind.
- Brew, taste and change only the dose next time if you want it stronger or lighter.
Common mistakes
- Counting scoops. Scoops come in different sizes, and the same scoop holds different weights of a fine or coarse grind, light or dark roast.
- Assuming 8 oz cups. As above, it throws off the whole pot.
- Not scaling down for a half pot. Brewing 6 cups? Use the 6 cup row, about 49 to 59 g, not half a guess.
For more on why weight beats volume for coffee, see our guide to measuring coffee grounds for more consistent coffee.
A practical tip: weigh the grounds once for your usual pot, then repeat that exact number each morning. The MeasureMate digital measuring spoon scoops and weighs in one step, reads in 0.1 g steps and handles up to 500 g, so a 98 g dose is a few quick scoops. Hit the tare button to zero it between scoops.
Quick questions
How many scoops of coffee for 12 cups?
It depends on your scoop, because scoops vary in size. Weigh one level scoop of your coffee, then divide about 98 g (or your preferred dose) by that number.
How many ounces is a 12 cup coffee pot?
Usually about 60 to 72 fl oz, since a coffee maker cup is about 5 to 6 oz. Check your manual to be sure.
Do I use the same ratio for a half pot?
Yes. Keep 55 g per liter and just brew less water. For 6 cups, that's about 49 to 59 g.
Ratios based on the Specialty Coffee Association Golden Cup standard and Clive Coffee.