What is an ERG file?
The .ERG file extension is most commonly known as a CompuTrainer Workout File. Originally created by RacerMate, these files store structured indoor cycling workout data. The file contains time intervals and the specific target power (watts) the cyclist needs to hold.
However, the .ERG extension has multiple possible meanings. An .ERG file can also be an encrypted archive used by Cisco Prime Infrastructure, an e-learning course completion record for the US Navy, an XML-based German newspaper text corpus, or a simulation results file generated by IPG Automotive CarMaker.
How to open ERG files?
Because an .ERG file can belong to many different programs, you must know its source to open it correctly. If the file is a cycling workout, you can import it into modern indoor training software such as Zwift, TrainerRoad, or GoldenCheetah. If the file is automotive simulation data, you must use CarMaker.
Inspect and analyze online
Because the format varies so much, viewer.online/erg can analyze .ERG files to identify the exact format and creator software. Our tool allows you to inspect the file structure, extract readable text, and check whether an online preview is available. This helps you figure out exactly what kind of .ERG file you have.
File conversion
If you have a workout file, you might need a different format to upload it to a specific sports watch or cycling computer. We recommend using convert.guru to convert .ERG files to modern target formats like .FIT, .ZWO, or .TCX.
Summary
viewer.online/erg is useful for identifying, inspecting, and understanding .ERG files without installing software or dealing with compatibility problems.