Click the "Select File" button above, and choose your NDA file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert NDA to another file type
To convert NDA backups to another format, you need Nero BackItUp or other Backup software.
Convert a file to NDA
To convert other file formats to the "System Backup Archive" file type, you need software like Nero BackItUp or a similar tool.
About NDA files
The .nda file extension serves multiple distinct, highly specialized purposes. Most commonly, it is either a Nero BackItUp disk image file developed by Nero AG or a battery testing data log generated by the NEWARE Battery Testing System. It is also used by Nordea Bank for XML-based Finnish bank account statements (ISO 20022 financial messages) and Nemetschek Allplan for CAD project archives. The primary disadvantage of the .nda format is its heavily fragmented and proprietary nature. Nero backups require a paid, Windows-only subscription to natively mount or restore, while NEWARE data files are locked to specialized hardware software. They are entirely useless on mobile devices, Mac OS, or standard web browsers without the original application. Because these are largely closed ecosystem files, you usually need to convert them to access or share the data. Battery test data should ideally be exported to CSV or XLSX for charting in Microsoft Excel. Nordea bank statements are best converted to PDF or CSV for seamless accounting workflows. Nero backups act as compressed archives; you essentially need to extract them rather than convert them. Standard online converters fail to process .nda files because proprietary binary formats and custom compression algorithms are exceptionally difficult to parse. Often only the original software can properly read or export the embedded data. However, you can rely on our tools for a pragmatic workaround. Even if the file uses an obscure structure, our analysis can often detect supported underlying or embedded formats. For example, if your .nda is actually an Allplan ZIP archive or a Nordea XML message, viewing or conversion may still be fully possible.
Convert.Guru analyzes your NDA file, detects the exact format, and lets you read the text inside.
If you want to convert NDA file to BAK, BACKUP, OLD, TMP, TEMP, ARC, ZIP, TAR, GZ, 7Z, RAR or ISO, you can use Nero BackItUp or similar software from the "Backup Archive & Sensor Data" category. In the File menu, look for Save As… or Export….
To convert SNAPSHOT, OLD, IMG, RESTORE, ISO, COPY, VMDK, TMP, VHD, BAK, ARCHIVE or BACKUP files to NDA, try Nero BackItUp or another comparable tool in the "Backup Archive & Sensor Data" category.
The NDA Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our NDA converter.