RLS Converter

Extract text from spectrum data files (RLS)


Drop or upload your .RLS file
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How to extract text from your RLS file

  1. Click the "Select File" button above, and choose your RLS file.
  2. You’ll see a preview, if available.
  3. Click the "Convert file to..." button to extract text information.

Convert RLS to another file type

To convert RLS spectrum files to another format, you need UV WinLab or other Data software.

Convert a file to RLS

To convert other file formats to the "Spectrum Data File" file type, you need software like UV WinLab or a similar tool.


About RLS files

The .RLS file is primarily a proprietary UV-Vis spectrum data file created by PerkinElmer spectrophotometers and software like UV WinLab. These files store raw laboratory absorption, transmission, and reflectance spectroscopy data. Secondarily, .RLS is used by Nemetschek Allplan as a CAD reinforcement steel schedule, and rarely as a Symbian Localization File by Nokia. Because PerkinElmer uses a closed data structure, these files are heavily restricted. The primary disadvantage of this format is that it requires expensive, specialized laboratory software licenses to open. The format is not supported by standard web browsers, basic text editors, or open-source data tools. This creates major bottlenecks for scientists and researchers who need to share raw spectral data with peers or students who lack access to the original lab equipment. To make the data usable, users must convert .RLS into CSV, TXT, or XLSX formats. Exporting to standard comma-separated values allows for cross-platform analysis in Microsoft Excel or Python, though you will lose proprietary instrument metadata and machine settings during the conversion. This file format is notoriously difficult to open or convert outside of a lab environment. Emphasize that often only the original software can properly read or export the data. Standard online converters fail completely because they do not have the proprietary PerkinElmer decoding libraries. Our engine will inspect the binary contents to show any readable text or underlying data. If our analysis detects the Allplan CAD variant, which is essentially an embedded ZIP archive, immediate extraction and conversion may still be possible.

Convert.Guru analyzes your RLS file, detects the exact format, and lets you read the text inside.

Users also converted PDF and BCN files.


FAQ

If you want to convert RLS file to DWG, DXF, DGN, RVT, RFA, SKP, 3DM, STEP, IGES, SAT, X_T or X_B, you can use UV WinLab or similar software from the "Spectroscopy Data Storage" category. In the File menu, look for Save As… or Export….

To convert SLDASM, DGN, PRT, IAM, X_B, CATPRODUCT, SLDPRT, RVT, ASM, DWG, CATPART or DXF files to RLS, try UV WinLab or another comparable tool in the "Spectroscopy Data Storage" category.



The RLS 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 RLS converter.