Ext Decoder
Database

.mdb — Microsoft Access Database (Legacy)

The legacy database file format used by older versions of Microsoft Access, superseded by .accdb.

Commonly opened with
  • Microsoft Access
Supported platforms
  • Windows
Editable?
Yes, with common software
Viewable without special tools?
Usually, yes
Commonly converted to
  • .accdb
  • .csv
Inherent format risk
Use some caution
Safety guidance (not a guarantee)

This format can contain macros or embedded scripts that run code when enabled. Keep macros disabled unless you trust the source and specifically expect them.

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Frequently asked questions

What is a .mdb file?

The legacy database file format used by older versions of Microsoft Access, superseded by .accdb.

Can I edit a .mdb file?

Yes — .mdb files are commonly editable with software such as Microsoft Access.

Does having a .mdb extension mean the file is safe?

No single extension can guarantee that. This format can contain macros or embedded scripts that run code when enabled. Keep macros disabled unless you trust the source and specifically expect them. Always consider where the file came from, not just its name.

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