Click the "Select File" button above, and choose your NESSUS file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert NESSUS to another file type
To convert your NESSUS file to another format, you need Tenable Nessus or other Data software.
Convert a file to NESSUS
To convert other file formats to the "Security Audit Log" file type, you need software like Tenable Nessus or a similar tool.
About NESSUS files
The .NESSUS file is the standard data export format used by Tenable Nessus, the industry-standard vulnerability scanner. Technically, it is a structured XML file that contains comprehensive scan results, including host details, detected vulnerabilities (CVEs), severity scores, and plugin outputs. While the XML structure is excellent for machine parsing and importing back into Tenable products, it is notoriously difficult for humans to read directly. Raw .NESSUS files are often extremely verbose, sometimes exceeding 100MB for large network scans, which causes standard text editors to crash or hang. Furthermore, because the data is deeply nested (Host > Port > Vulnerability), you cannot simply open it in spreadsheet software like Microsoft Excel to sort findings by severity. To make this data actionable for IT teams or auditors, users typically convert these files to CSV for sorting in spreadsheets, HTML for lightweight browser-based reports, or PDF for archival compliance records.
Convert.Guru analyzes your NESSUS file, detects the exact format, and lets you read the text inside.
If you want to convert NESSUS file to CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT, DB or SQL, you can use Tenable Nessus or similar software from the "Vulnerability Scan Report" category. In the File menu, look for Save As… or Export….
To convert DBF, XML, SQLITE, XLSX, SQL, TSV, ACCDB, YAML, MDB, CSV, ODS or JSON files to NESSUS, try Tenable Nessus or another comparable tool in the "Vulnerability Scan Report" category.
The NESSUS 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 NESSUS converter.