RND Converter

Extract text from RND files

Select File
Drop or upload your .RND file

Online File Converter

✈

How to extract text from your RND file

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

Convert RND to another file type

To convert your RND file to another format, you need NoiseTools or other Data software.

Convert a file to RND

To convert other file formats to the "Acoustic Measurement Data" file type, you need software like NoiseTools or a similar tool.

About RND files

The .RND extension serves multiple distinct functions, most frequently storing acoustic measurement data from sound level meters manufactured by Rion Co., Ltd. or Cirrus Research. These files contain time-history noise data, octave band analysis, and calibration records critical for environmental compliance and industrial safety reports.

A major catch for .RND files is their proprietary nature; they are binary data containers that cannot be opened in standard spreadsheet applications like Microsoft Excel or text editors. Accessing the raw data typically requires specific, often expensive, vendor software such as NoiseTools or Rion AS-60. Furthermore, legacy .RND files from MicroStation by Bentley Systems may actually be TIFF images disguised with a different extension, confusing standard image viewers.

Best Conversion Targets:

For Data Analysis: Convert Rion/Cirrus measurement files to CSV or XLSX to manipulate the data in Excel or MATLAB.
For Reporting: Convert data logs to PDF to create immutable compliance reports.
For CAD/Images: If the file is a MicroStation render, convert it to PNG, JPG, or standard TIFF for easy viewing on web and mobile devices.
For Security: Note that .RND files associated with PGP or GnuPG contain cryptographic random seeds and should generally not be converted or edited to preserve security entropy.

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

Users also converted RND-DATA, RMD, SHF, AEXPK and BEXPK files.

FAQ

If you want to convert RND file to TMP, TEMP, CACHE, LOG, BAK, OLD, NEW, PART, DOWNLOAD, CRDOWNLOAD, LOCK or PID, you can use NoiseTools or similar software from the "Acoustic Measurement Data" category. In the File menu, look for Save As… or Export….

To convert DEVICE, CACHE, SOCK, SYMLINK, PID, MOUNT, FIFO, LOG, PIPE, TMP, JUNCTION or TEMP files to RND, try NoiseTools or another comparable tool in the "Acoustic Measurement Data" category.

The RND 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 RND converter.