When you already have many passwords in an existing password store (e.g. the built in Firefox password manager) it can save you time in the long run if you spend a few minutes migrating those passwords into your new KeePass database.
If you have a small number of passwords to import you may be just as happy to save them into KeeFox as you go along. That does have the advantage of ensuring KeeFox knows as much about the login form for your password as possible - this extra detail can be required for accurate form filling on some websites but it’s not usually needed.
If you have many passwords already in a KeePass database or you import them using one of the methods below, you may want to look at how to work with existing passwords
Importing from Firefox
Please use the Firefox password importer. Note that you will need to have installed Microsoft .NET 4.0 for this importer to work, which is a newer version than required by KeePass and KeeFox.
Importing from other password stores
KeePass 2.x has built in support for importing from dozens of different password stores and export file formats. Please visit the help page on the official KeePass website for more information and look in the KeePass support forums for help if required.