Free Online MDB and ACCDB ViewerNo Access. No Java. No ODBC. No Windows. The database opens in this browser tab.
A colleague or customer sent an .mdb or .accdb file. You need to see what is in it, without tracking down a copy of Access. Here it takes three steps:
When the answer crosses tables, open the Diagram tab first. Select a table and follow its declared relationships before narrowing the data or exporting a result.
The viewer reads table data and makes the file's structure visible:
| Access object | In the viewer |
|---|---|
| Tables | Row counts and browsable data; Access system tables stay hidden. |
| Columns | Access types preserved: text, number, currency, date/time, yes/no, AutoNumber and OLE. |
| Values | Currency and Decimal stay exact; Date/Time sorts in time order. |
| Relationships | An ER diagram of the relationships the file declares. |
| Saved SELECT queries | Shown as SQL for reference, not run in the viewer. |
| Linked tables | Named, but their remote rows are not loaded. |
| Forms, reports, macros and VBA | Not shown. |
The file is opened from your disk and read where it sits, so there is no upload and no copy on a server. Queries are read-only, which means the file you opened is the file you still have, and closing the tab leaves nothing behind.
No. The whole file is read into this browser tab's memory and queried there, and a password you type is used in the tab to decrypt the file and is not stored or sent anywhere. Closing the tab discards both.
Access 97 through Access 2024 and Microsoft 365: .mdb files from the Jet 3 and Jet 4 engines, and .accdb files from ACE. A file that is not an Access database, or is damaged, is reported as such rather than shown empty.
Yes. An .accdb file encrypted with a password in Access 2007 or later asks for it in the page, and a wrong password is refused with a message so you can try again. An Access 2000-2003 database password does not encrypt the file, so such an .mdb opens without asking.
There is no fixed limit: the file and a typed copy of every table are held in the tab's memory, so the machine sets the ceiling, and files over 1 GB get a warning. Every table and result pages to its last row; an export writes the first 10,000 rows free and the whole result with PRO.
No. The viewer runs SELECT and WITH queries only and never writes to the .mdb or .accdb file, so the file you opened is unchanged. To take the data elsewhere, export a result as CSV, JSON or Parquet.
Open it without downloading: right-click the .mdb or .accdb file in Drive and choose Open with → MDB and ACCDB Viewer. Your browser reads the file straight from Drive; it never passes through our servers.
Moving off Access rather than looking inside it? DBConvert's desktop tools convert Access databases to MySQL, PostgreSQL, SQL Server, Oracle, SQLite and Firebird.
Need help with a file? Contact us