How much coffee should you use per cup?
Use about 10 grams of coffee for a 6 oz cup, 13 grams for 8 oz and 19 to 20 grams for a 12 oz mug. That follows the Specialty Coffee Association's 55 grams per liter. The National Coffee Association's volume guideline is 1 to 2 tablespoons of ground coffee per 6 oz of water.
How many grams of coffee do you need for a 6, 8 or 12 oz cup?
The Specialty Coffee Association (SCA) sets its Golden Cup recommendation at 55 grams of coffee per liter of water, plus or minus 10%. Because 1 milliliter of water weighs 1 gram, you can turn that into a dose for any cup size with a kitchen scale and a little arithmetic.
| Water | Milliliters | Coffee at 55 g per liter | Golden Cup window (plus or minus 10%) |
|---|---|---|---|
| 6 oz cup | 177 ml | about 10 g | 9 to 11 g |
| 8 oz cup | 237 ml | about 13 g | 12 to 14 g |
| 12 oz mug | 355 ml | about 19.5 g | 18 to 21 g |
Measure the water you pour in, not the coffee you get out. The grounds hold back some liquid, so a 12 oz pour gives you a little less than 12 oz in the mug.
What does the NCA's 1 to 2 tablespoons per 6 oz guideline mean?
The National Coffee Association (NCA) gives a volume version of the same idea: 1 to 2 tablespoons of ground coffee for every 6 ounces of water, which it calls the Golden Ratio. It pairs that with a medium grind, roughly like kosher salt, for drip brewers.
Two details are worth noticing. First, the guideline is written per 6 oz of water, not per 8 oz cup or per mug. Second, the range is wide on purpose: 2 tablespoons is twice as much coffee as 1. Start in the middle, about 1 and a half level tablespoons per 6 oz, then adjust to taste.
How much coffee for 1, 2, 4, 6, 8 and 12 cups?
Before you scale up, check what your coffee maker means by a "cup." A machine's "cup" is not a standard 8 oz mug, and the NCA guideline uses 6 oz. So check the markings on your carafe or the manual, then pick the matching column below. If your machine counts 5 oz cups, use the 5 oz column.
| Cups | Water at 6 oz per cup | Coffee (grams) for 6 oz cups | Coffee (grams) for 5 oz machine cups | Level tablespoons (NCA, 6 oz cups) |
|---|---|---|---|---|
| 1 | 6 oz (177 ml) | 10 g | 8 g | 1 to 2 |
| 2 | 12 oz (355 ml) | 20 g | 16 g | 2 to 4 |
| 4 | 24 oz (710 ml) | 39 g | 33 g | 4 to 8 |
| 6 | 36 oz (1,065 ml) | 59 g | 49 g | 6 to 12 |
| 8 | 48 oz (1,420 ml) | 78 g | 65 g | 8 to 16 |
| 12 | 72 oz (2,129 ml) | 117 g | 98 g | 12 to 24 |
The gram columns use the SCA ratio of 55 g per liter, rounded to the nearest gram. The tablespoon column scales the NCA guideline. The two systems land close together but are not an exact conversion, because a tablespoon of ground coffee does not weigh the same from bag to bag.
Brewing for a different method? This page sticks to everyday cup sizes. For French press, pour-over, cold brew and espresso ratios, use the full chart in our Brewing Guides.
Why does weighing beat scoops and tablespoons?
A tablespoon measures space, and coffee does not fill space evenly. Three things change how many grams fit in the same spoon:
- Roast level. Roasting puffs coffee up. Research modeling beans during roasting found final bean volume can reach up to 1.8 times the starting volume, while bean density drops, with a larger drop at higher roasting temperatures. A separate study measured bulk density falling from about 0.7 to 0.3 g/cm³ during roasting.
- Bean size and shape. Large beans and small beans pack differently in a scoop, leaving different amounts of air between them.
- Grind size. Fine grounds settle tighter than coarse grounds, so a spoonful of fine coffee usually holds more than a spoonful of coarse.
In practice, that means a level tablespoon of a lighter roast can weigh more than the same spoon of a dark, blended supermarket coffee. The SCA's own cupping protocol weighs coffee as whole beans for exactly this reason: weight stays the same no matter how the beans pack.
A basic kitchen scale that reads in single grams is enough. Put your brewer or filter on the scale, zero it, and add coffee until you hit the number in the table.
How many scoops of coffee per cup?
There is no single standard coffee scoop. Scoops sold with grinders and canisters come in different sizes, so "one scoop per cup" can mean very different doses in different kitchens.
The fix takes 2 minutes. Fill your scoop level with the coffee you usually brew, tip it onto a scale and write down the weight. If one level scoop of ground coffee weighs about 10 g, one scoop per 6 oz of water puts you right at the Golden Cup ratio. If it weighs less, round up; if it weighs more, use a little less. Re-check when you switch roast levels, since a lighter roast can change the result.
How do you make coffee stronger or weaker without ruining it?
Change the amount of coffee, not the brew time. SCA brewing research notes that strength, measured as total dissolved solids, is controlled more easily through brew ratio than through extraction. In plain terms: more coffee per ounce of water makes a stronger cup, and less makes a lighter one.
- Too weak or thin: add 1 g per 6 oz of water, up to about 11 g. With tablespoons, move toward 2 per 6 oz.
- Too strong or heavy: drop 1 g per 6 oz, down to about 9 g. With tablespoons, move toward 1 per 6 oz.
- Bitter, hollow or sour: that is usually a grind or extraction issue, not a dose issue. Keep the ratio steady and adjust the grind first.
Make one change per brew and keep notes. Once you find your number, a scale lets you repeat it every morning, whether that pot is for the commute thermos or a weekend on the porch.
Does whole bean or ground coffee change how much you use?
By weight, no. Ten grams of whole beans become 10 g of grounds, so the gram figures above work for both. Weigh whole beans before grinding, then grind only what you need.
By volume, yes. Whole beans and ground coffee take up different amounts of space, so never measure whole beans in tablespoons and expect the NCA guideline to hold. That guideline is written for ground coffee.
Freshness is the other difference. The NCA notes that coffee begins to lose freshness almost immediately after roasting, and its storage guidance lists roasted whole beans at room temperature at about 1 to 3 weeks versus 1 to 2 weeks for ground coffee. It also suggests grinding the amount you need just before brewing for the freshest flavor. Keep either kind in an airtight, opaque container away from heat and sun.
Every coffee in our single-origin collection is roasted to order and sold whole bean or in a drip grind, in 12 oz, 2 lb and 5 lb bags. Single-origin coffees come from one specific place, unblended, and are roasted lighter so the origin comes through. That is one more reason to weigh: lighter roasts sit at the denser end of the range, so a scoop of them can carry more coffee than you expect.
Frequently asked questions
How many tablespoons of coffee per cup?
The National Coffee Association recommends 1 to 2 tablespoons of ground coffee for every 6 ounces of water. For an 8 oz cup, that becomes about 1.3 to 2.7 tablespoons; for a 12 oz mug, 2 to 4 tablespoons. Start in the middle of the range and adjust to taste.
How many grams of coffee per cup?
At the Specialty Coffee Association's 55 grams per liter, use about 10 g of coffee for 6 oz of water, 13 g for 8 oz and 19 to 20 g for a 12 oz mug. The SCA allows plus or minus 10%, so 9 to 11 g per 6 oz is within its window.
How much coffee for a 12-cup coffee maker?
Check your carafe or manual first to see how many ounces it counts as a cup. At 5 oz per cup, 12 cups is 60 oz of water and about 98 g of coffee. At 6 oz per cup, it is 72 oz of water, about 117 g of coffee, or 12 to 24 level tablespoons.
How many scoops of coffee per cup?
It depends on your scoop, because scoop sizes are not standardized. Weigh one level scoop of your ground coffee. If it holds about 10 g, one scoop per 6 oz of water matches the Specialty Coffee Association's Golden Cup ratio. Adjust up or down from there.
Is it better to measure coffee by weight or by scoop?
Weight is more consistent. Roasting expands beans and lowers their density, and bean size and grind size change how coffee packs into a spoon, so the same scoop can hold different amounts. A kitchen scale that reads single grams removes that guesswork.
Do you use the same amount of whole bean and ground coffee?
By weight, yes: 10 g of whole beans grinds into 10 g of coffee, so weigh beans first and then grind. By volume, no, because beans and grounds take up different amounts of space. The tablespoon guideline is written for ground coffee only.