Extract text from NAS files
To convert your NAS file to another format, you need MSC Nastran or other Data software.
To convert other file formats to the "Scientific Data & FEA" file type, you need software like MSC Nastran or a similar tool.
The .NAS extension primarily refers to the NASA-Ames format, a portable ASCII file standard used for exchanging atmospheric and air quality monitoring data. It is widely used by organizations like EMEP to store time-series data with rich metadata headers. A secondary but significant usage is as a Finite Element Analysis (FEA) input deck for MSC Nastran, containing mesh geometry and simulation parameters.
While NASA-Ames files are technically text-based, their rigid header structure often causes misalignment when imported directly into standard spreadsheet tools like Microsoft Excel or Google Sheets, forcing users to manually parse rows or write custom Python scripts. Similarly, Nastran .NAS files are typically locked behind expensive engineering simulation suites like MSC Nastran or Simcenter 3D, making it difficult for stakeholders to view the 3D model without a specialized license.
To overcome these hurdles, users often convert NASA-Ames .NAS files to CSV or XLSX for immediate analysis and plotting. For Nastran files, converting the mesh data to universal 3D formats like STL, OBJ, or VTK allows for easy visualization in free viewers or web browsers.
Convert.Guru analyzes your NAS file, detects the exact format, and lets you read the text inside.
Users also converted XML, TOC, PDT, PTC, DAS and SSD files.
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 NAS converter.