Why convert MDB to ACCDB?
ACCDB is the current Microsoft Access format, introduced in Access 2007 with the ACE engine replacing the older Jet engine. Moving from .mdb to .accdb enables attachment fields, multivalued lookup fields, calculated columns, and data macros, while dropping the outdated workgroup security model that some organizations deliberately kept on .mdb.
How to convert MDB to ACCDB
Microsoft Access APP
Open the .mdb in Access 2007 or later, go to File > Save As, select Access Database (*.accdb), and click Save - the new .accdb is written and the original .mdb remains unchanged.
Programs that convert MDB
About these formats
.MDB
Microsoft Access Database (97-2003, Jet engine)
An MDB file is a Microsoft Access database in the old format Access used from 1992 through 2003, replaced by .accdb in Access 2007. It stores tables, queries, forms, reports, and VBA code…
Open .MDB details →
.ACCDB
Microsoft Access Database (2007+)
An ACCDB file is a Microsoft Access database - the format Access has used since the 2007 version, replacing the older .mdb. It stores tables, queries, forms, reports, and VBA code in one…
Open .ACCDB details →Quality & what to watch
- User-level workgroup security (
.mdwfiles and group permissions) is stripped during conversion; the data transfers but the old permission layer has no ACCDB equivalent. - MDB replication features are dropped - if the database was part of a replication topology, that setup breaks after conversion.
- Standard tables, saved queries, forms, reports, relationships, indexes, and VBA modules all convert cleanly.
Frequently asked questions
Is the original .mdb file modified during conversion?
.accdb and leaves the original .mdb intact.Can I use an online converter for MDB to ACCDB?
Which Access version is required?
.accdb and can perform this conversion.
