EPH Converter

Extract text from Ephemeris data files (EPH)

Select File
Drop or upload your .EPH file

Online File Converter

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How to extract text from your EPH file

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

Convert EPH to another file type

To convert EPH Ephemeris files to another format, you need PixInsight or other Data software.

Convert a file to EPH

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

About EPH files

The .eph extension is a classic example of a file collision where one extension serves three distinct, incompatible masters: astrophotography, electrical engineering, and GPS geodesy. The most common variety is the Astronomical Ephemeris file used by PixInsight, a specialized platform for astrophotography image processing. These files store calculated positions of celestial bodies (like planets or asteroids) to help align or annotate deep-sky images. They are typically binary or proprietary structures that standard text editors and image viewers cannot interpret, locking valuable coordinate data inside a paid software ecosystem.

A secondary but significant use is within EPLAN Electric P8, where the .eph file functions as a project header image - essentially a thumbnail or logo embedded in electrical schematic projects. These are proprietary blobs that standard tools like Adobe Photoshop will refuse to open. Finally, scientists may encounter .eph files containing precise satellite orbit data from the International GNSS Service, which are often text-based but formatted specifically for geodetic software.

Best Conversion Targets:

For Astrophotography: If you need to archive the data or move it between different astronomy tools, converting to the standard FITS format or the modern .XISF is ideal. For visual reference, render the data to JPG or PNG.
For EPLAN Projects: To recover the image locked inside the header file, converting to standard PNG or TIFF allows you to view the graphic without the engineering suite.
For GPS/GNSS Data: Convert these files to SP3 (Standard Product 3) or RINEX for broader compatibility with mapping and surveying tools.

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

Users also converted ASO, PTS and PHO files.

FAQ

If you want to convert EPH file to , you can use PixInsight or similar software from the "Astronomical Data Storage" category. In the File menu, look for Save As… or Export….

To convert files to EPH, try PixInsight or another comparable tool in the "Astronomical Data Storage" category.

The EPH 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 EPH converter.