Free coffee calculator
Coffee bag life calculator
Enter the bag size, how much coffee each brew uses, and how many brews you make a day. The calculator shows how long the bag lasts, so you can choose a bag size you finish while it still tastes lively.
Try it: bag life
How long will this bag last?
Lasts about
16 days
You will finish the bag within about a month, while it should still taste lively.
How it works
Days = bag size (g) ÷ coffee per brew (g) ÷ brews per day, rounded down.
A 250 g bag at 15 g per brew and one brew a day lasts 16 days. Rounding down counts only full brews.
Many coffees taste their best within a few weeks of opening. If the bag lasts longer than a month, buy a smaller bag or freeze part of it in small airtight portions.