Products' Universal Product Codes, or UPC codes, are often located on bar codes on the products themselves or their packaging. A bar code containing a UPC number can typically be found on the bottom or side of a product. UPC codes range from 11 to 13 numbers in length.
If only part of a product's UPC code is available, one may use the search page on UPCDatabase.org to type in the partial code and find the rest of the product's UPC number. If the entire UPC code is unknown, one may search for the whole UPC code on UPCDatabase.org by looking up the product or item name.