Dry foods generally have a long shelf life and flour is not an exception. Different kinds of flour abound, but for this article, the focus will be on All-purpose flour, since it’s more commonly used in American homes.
Yes, flour can go bad, albeit that takes a long time to happen; about 6-8 months at room temperature and 1-2 years when refrigerated or frozen. This refers to multi-purpose flour. For every 6 months that All-purpose flour lasts, other kinds like whole wheat flour, last 2-3 months less because they either have a higher fat content or contain nutrients that spoil easily.