A 12 oz bag of coffee is about 340 g, which is 68 level tablespoons or 34 scoops. At one 12 fl oz mug a day (22 g at 1:16) it lasts about 15 days, at two mugs about 7 days, at three about 5 days, and at four just under 4 days. The numbers use the how much coffee per cup math: 5 g per level tablespoon, 10 g per scoop, 1:16 coffee to water.
How many days does a bag last by mugs per day?
This table assumes a 12 fl oz (355 g) mug and 22 g of coffee per mug at 1:16.
| Mugs a day | Coffee a day | Level tablespoons | Scoops | Days per 340 g bag |
|---|---|---|---|---|
| 1 | 22 g | 4.4 | 2.2 | about 15 |
| 2 | 44 g | 8.8 | 4.4 | about 7 |
| 3 | 66 g | 13 | 6.6 | about 5 |
| 4 | 88 g | 17.6 | 8.8 | just under 4 |
If your mug is 8 fl oz, use 15 g instead, and the bag lasts about 22 days at one mug a day. The single-cup math is on how much coffee for 8 oz of water.
How long does a bag last if you brew a full pot?
For a drip machine, count in pots. These assume 5 fl oz cups, which is how machines are commonly sold, and 1:16.
| Pot a day | Water | Coffee | Scoops | Days per 340 g bag |
|---|---|---|---|---|
| 4 cup | about 20 fl oz | 37 g | 3.7 | about 9 |
| 8 cup | about 40 fl oz | 74 g | 7.4 | about 4.5 |
| 12 cup | about 60 fl oz | 111 g | 11 | about 3 |
If you brew for a crowd, one bag goes fast. The how much coffee for 20 people page shows how many bags an event takes.
Does a stronger or weaker brew change the days?
Yes, in proportion. The roaster's own recipes call for 60 g per litre, which is a touch stronger than 1:17 but lighter than 1:15. At 1:15 you use about 6% more coffee than at 1:16, and at 1:17 about 6% less. For one mug a day, that is the difference between about 14 and 16 days. Our ratio chart by ounces has the numbers for each strength.
How fresh does it have to be when you finish it?
Our site FAQ says filter coffee is at its best 5 to 21 days after roasting. We do not print a roast date. We roast on demand, so the count starts close to when the bag ships. Against that window:
- One mug a day takes about 15 days, so the whole bag falls inside it.
- Two or more mugs a day finish the bag in about a week or less, comfortably inside.
- Half a mug a day or less stretches the bag past 21 days. If that is you, a smaller dose or sharing the bag is better than stale coffee.
Which cadence fits a subscription?
Match the delivery to the table. One mug a day suits a bag every 2 weeks. Two mugs a day needs a bag about every week. A monthly bag fits only light drinking, roughly half a mug a day. The subscription is 11% off, and you can skip or cancel in one click if your pace changes.
A bag that lasts two weeks is easy to finish well. No. 1 Common Sense and No. 10 Folklore are both $28 for 12 oz, whole bean or ground, with free US shipping. Folklore is the second pot, the one you make for the house, and there is a No. 10 Folklore brewing guide for it.
Our pick
No. 1 Common Sense
Huila and Medellin-Antioquia, Colombia · 1,300 to 1,500 m · Fully washed, solar dried · Castillo, Caturra, Colombia, Typica · Medium
Cocoa, red apple and brown sugar on the label, the cup you make every morning without thinking about it.
Our pick
No. 10 Folklore
Piura and Amazonas, Peru · 1,100 to 1,700 m · Fully washed, sun dried · Caturra, Bourbon, Catuai, Pache, Catimor · Medium
Salted caramel, citrus and silky on the label, mild and round for the second pot.
You can see all ten coffees in one place.
Questions people ask
How many cups of coffee are in a 12 oz bag?
About 15 mugs of 12 fl oz at 22 g each, or roughly 22 small 8 fl oz cups at 15 g each, at 1:16.
How many 12 cup pots from one 12 oz bag?
About 3. A 12 cup pot with 5 oz cups takes around 111 g at 1:16, and a 12 oz bag is about 340 g.
How fresh does coffee need to be?
Our site FAQ gives 5 to 21 days after roasting for filter coffee. We roast on demand, so you start that window close to when you open the bag.
Free printable
Keep the ratio chart on your fridge
One page with grams, level tablespoons and scoops for every cup size and for coffee makers from 2 to 14 cups. Leave your email and the download link appears right here.