To convert accdb to sqlite, which is export of MS Access databases to SQlite format, you will have to use a special database management tools that support import of Access databases and write data to SQLite database file format. You can also use some exchange data formats and export accdb files into csv or xml, sql and then import it to SQLite database.
A viable alternative would be with utilities like the ACCDB MDB Explorer, or Access Database Manager for Mac or similar that can also transform Microsoft Access database files (.accdb) to SQLite database file format (.sqlite).Open ACCDB file Open SQLITE file
A database viewer
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A powerful database to database converter
Fully-featured version of Navicat for Windows
A linux forversion of popular MySQL tool
A Mac version of the popular MySQL program