What the date labels on your food actually mean

Best if Used By/Before
Date indicates when a product will be the best flavor or quality. It is not a purchase or safety date.
Sell-By
Tells the store how long to display the product for sale for inventory management.
Use-By
Last date recommended for the use of the product while at peak quality. It is not a safety date except for when used on infant formula
Freeze-By
Indicates when a product should be frozen to maintain peak quality. It is not a purchase or safety date.

Guardian graphic. Source: USDA