Fill the moka pot's filter basket level to the rim, which works out to about 13 to 15 g of coffee for a 3 cup pot and 20 to 26 g for a 6 cup pot. How much coffee for a moka pot really comes down to its size, because the basket sets the dose and you shouldn't pack it down or leave it half empty.
| Pot size | Ground coffee | Approximate brewed coffee |
|---|---|---|
| 1 cup | about 5 to 7 g | about 60 ml |
| 3 cup | about 13 to 15 g | about 130 ml |
| 4 cup | about 15 to 17 g | about 185 to 190 ml |
| 6 cup | about 20 to 26 g | about 250 to 270 ml |
| 9 cup | about 38 g | about 410 to 420 ml |
| 12 cup | about 50 g | about 595 to 670 ml |
How much coffee for a moka pot by size
Bialetti and most other makers don't print a gram figure. They simply tell you to fill the funnel with coffee. The numbers above come from people who weighed it:
- Whole Latte Love lists 13 g for a 3 cup Moka Express, 26 g for a 6 cup, 38 g for a 9 cup and 50 g for a 12 cup.
- Stumptown Coffee Roasters uses roughly 15 to 17 g in a 4 cup Bialetti.
- Blue Bottle Coffee uses about 20 to 22 g in a 6 cup pot, and Compass Coffee uses 25 g for the same size.
The brewed volumes come from Bialetti's Moka Express listings, which also note that the actual amount depends on the water and the grind you use.
Why a moka pot "cup" is so small
A moka pot cup is an espresso style cup, not a mug. That's why a 6 cup pot gives you only about 250 to 270 ml. If you're making coffee for two people who drink full mugs, a 6 cup pot (or a 9 cup) is usually a better fit than a 3 cup, and you can always top up the coffee with hot water afterward, as Stumptown suggests.
The dose also varies because grind and roast change how much coffee fits in the same basket. A fine, fluffy grind takes up more room than a denser one, so a level basket won't weigh exactly the same every time. That's why sources disagree by a few grams for the same pot.
How to fill a moka pot step by step
- Grind fine, but not as fine as espresso. Blue Bottle compares it to granulated sugar, and Stumptown to table salt.
- Fill the bottom chamber with water just below the safety valve. For a 6 cup pot, Blue Bottle says that's about 345 g. Starting with hot water speeds things up.
- Fill the basket with coffee, level it gently and wipe the rim. Don't tamp it.
- Screw the pot together snugly and set it over medium heat with the lid open.
- When the stream turns pale and starts to hiss or gurgle, take it off the heat.
- Stumptown cools the base with a chilled towel or cold water to stop the brew, then pours once the bubbling stops.
Common moka pot mistakes
- Tamping the grounds. Pressing them down makes it harder for water to push through. Blue Bottle and Stumptown both say not to tamp.
- Filling water above the valve. Keep it just below the safety valve line.
- Grinding as fine as espresso. Blue Bottle recommends a grind that's coarser than espresso but finer than pour over.
- Guessing the dose every morning. Weigh your coffee once you find a basket fill you like, then repeat that number.
A practical tip: weigh your coffee once when the basket is perfectly level, write the number down, and use it every day after. The MeasureMate digital measuring spoon scoops and weighs in one step, reads in 0.1 g steps and handles up to 500 g, so even a 50 g dose for a 12 cup pot is no trouble. Use the tare button to zero it between scoops.
Quick questions
Should I tamp coffee in a moka pot?
No. Fill the basket, level it gently and wipe the rim. Tamping makes it harder for the water to flow through the coffee.
How much water goes in a moka pot?
Fill the bottom chamber to just below the safety valve. For a 6 cup pot that's about 345 g of water, according to Blue Bottle.
Can I use less coffee for a weaker cup?
The brew guides we checked all fill the basket. For a milder cup, keep the basket full and add hot water to the finished coffee, as Stumptown suggests.
Ratios based on Whole Latte Love's Bialetti Moka Express specs, Bialetti product listings, Blue Bottle Coffee, Stumptown Coffee Roasters, Compass Coffee and Chronic Coffee.