Opening MEFS Files

The MEFS file type is primarily associated with ExerciseRT.

MEFS	File extension: MEFS
	File type:	Secondary Data Record

What is a MEFS file?

MEFS files mostly belong to ExerciseRT by Morgan Medical Ltd. MEFP = Morgan Exercise File - Primary. Contains all sampled data measured during an exercise test. The data in this file comprises respiratory and other physiological data measured during an incremental workload stress or exercise test on a subject. The refined breath-by-breath data is kept in a smaller file: MEFS - containing secondary data.

How can I open a MEFS file?

You need a suitable software like ExerciseRT to open a MEFS file. You need a suitable software like ExerciseRT from Morgan Medical Ltd. to open a MEFS file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your MEFS file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a MEFS file directly in the browser:. Just drag the file onto this browser window and drop it.

Online MEFS Text Viewer

Choose your .mefs file to analyze

or drag and drop it here

Online File Viewer

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Can't Open Your .MEFS File? Try These Steps

Because .MEFS files may originate from specialized programs, they aren't universally openable.

Identify the Source: If the file came from a pulmonary lab, it likely belongs to Morgan Medical Ltd.'s ExerciseRT software as a secondary data record. If from a developer, it may be custom data.
Check the Header: Open the file in a text or hex editor to inspect the first bytes:
- Readable XML or JSON suggests structured data.
- "PK" indicates a standard ZIP archive.
- Unreadable binary usually means a proprietary format.
Use the Original Software: You typically need the original program to open it; try ExerciseRT, or ask the sender if you remain uncertain.
Use this Webpage: Drag and drop your .MEFS file onto this page to detect its format, extract metadata, and preview readable text.

Technical Data for MEFS File Extension

Related files:

mefp

a mefs Secondary Data Record is a special file format by Morgan Medical Ltd. and should only be edited and saved with the appropriate software.

How to solve problems with MEFS files

Associate the MEFS file extension with the correct application.
Update your software that should actually open secondary data records. Because only the current version supports the latest MEFS file format. Search, therefore, e.g. on the Morgan Medical Ltd. manufacturer website after an available ExerciseRT update.
To make sure that your MEFS file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .MEFS file online - secure, fast, and no downloads needed.