how long do coffee beans last

Coffee beans can last up to about one year if they are unopened and stored properly in a cool, dark, and dry place. Once the bag is opened, roasted coffee beans tend to stay fresh for about one week to one month, depending on storage conditions; they should be kept in airtight containers away from light, heat, and moisture to slow down staling. For the best flavor, it is recommended that coffee beans be used within 3 to 4 weeks of opening, with peak flavor generally occurring from about 7 to 14 days after roasting. Green (unroasted) coffee beans can last much longer, typically 1 to 2 years or more when stored well. Ground coffee loses freshness faster than whole beans and should be consumed within a few days after opening for optimal taste.