Open Microsoft Access .mdb Files in Your Browser
A free, fast Microsoft Access database viewer that runs entirely in your browser. Drop a .mdb file in, browse every table, and export to JSON or CSV — no Access installation, no upload.
Upload
Drag & drop or browse for .mdb files
Browse & Sort
Navigate tables, sort columns asc/desc
Export
Download as JSON, CSV, or copy to clipboard
What is an .mdb file?
An .mdb file is a Microsoft Access database — the on-disk format Access used from version 97 through 2003. A single .mdb bundles tables, queries, forms, reports, and macros into one Jet Engine file. Many businesses, schools, and government systems still ship data in this format because it travels as a single file and remains readable decades later.
Microsoft introduced the newer .accdb format in Access 2007, but plenty of legacy datasets, training materials, and exported reports are still .mdb. If you receive one and don't have Microsoft Access installed, you only need the contents — the tables — not the full Access runtime. That's exactly what MDB Viewer gives you.
How to open an .mdb file without Microsoft Access
- Open MDB Viewer. Load this page in any modern browser — Chrome, Edge, Firefox, Safari, Brave. Nothing to install.
- Click Upload Database. Drag your .mdb file into the drop zone, or use the file picker to browse for it.
- Enter a password if prompted. Password-protected databases reveal a password field automatically — type the password to unlock.
- Pick a table from the sidebar. Every table in the database is listed. Click one to render its rows in the data grid.
- Search, sort, and export. Use the search box to filter rows, click any column header to sort, then export to JSON, CSV, or copy directly to your clipboard.
Your file is parsed locally by the browser. There is no upload step, no server-side storage, and the tool keeps working if you go offline after the page loads.
Frequently asked questions
Is my .mdb file uploaded anywhere?
No. MDB Viewer is fully client-side. Your database is read into memory inside your browser tab and discarded when you close the page. No server, no analytics on contents, no third-party storage.
Does it support password-protected Access databases?
Yes. The upload dialog reveals a password field when you select a protected .mdb. Your password stays in the browser and is never transmitted.
Can it open .accdb files (Access 2007 and newer)?
Not yet. MDB Viewer currently supports the legacy .mdb format (Access 97–2003). The .accdb format uses a different on-disk layout and is on the roadmap.
What is the maximum .mdb file size I can open?
The hosted version accepts files up to 50 MB. If you self-host from source you can raise the limit in the upload configuration.
How do I export an Access table to CSV or Excel?
Open the table and click the CSV button in the top bar to download a comma-separated file — Excel, Google Sheets, and Numbers all open it directly. JSON export and a copy-to-clipboard option are also available.
Does MDB Viewer work offline?
Yes. Once the page has loaded, you can disconnect from the internet and continue opening .mdb files. All processing happens in your browser.
Is it free? Any signup or ads?
Free, no signup, no ads. MDB Viewer exists as a quick way to inspect Access databases without installing Microsoft Office.