Opening EFS Files

The EFS file type is primarily associated with eSignal.

EFS	File extension: EFS
	File type:	formula script

What is an EFS file

EFS files mostly belong to eSignal by Intercontinental Exchange. An EFS file contains a formula script created with eSignal stock trading software or web app. The contents of this file is written in an XML-like syntax and used to calculate/forecast market outcomes. Sometimes, Active Undelete file recovery program appends EFS filename extension to recovered files. For example, if it recovers a project.docx file, it might name the file project.docx.efs. You can delete the EFS extension to view the recovered file. EFS is also the filename extension of a data file used by Effective File Search computer file search and indexing program. EFS is also associated with the audio format used by Ensoniq SQ80 synthesizer. This product has been discontinued and its audio format is obsolete.

How to open an EFS file

You need a suitable software like eSignal to open an EFS 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 EFS file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a EFS file directly in the browser:. Just drag the file onto this browser window and drop it.

Online EFS Text Viewer

Choose your .efs file to analyze

or drag and drop it here

Online File Viewer

✈

Read our privacy guarantee in Filext’s terms and privacy policy

Please allow ads on our site

This helps us keep our servers running. Then re-upload your file to view it.

Click here to see how to disable the ad blocker for filext.com

Programs that open and convert EFS files:

eSignal by Intercontinental Exchange
See the previous paragraphs to learn more about the main application. EFS files are often referred to as eSignal developers because this type of file is primarily created or used by this software.
Awave Studio (instrument sample) by FMJ
Awave Studio is an audio editing software that can import, play, and edit audio data from most sources. It can be used to play instrument samples and audio data saved in the EFS format used by the discontinued Ensoniq SQ80 synthesizer. This file format is classified as Audio.
EasyFlow (diagram) by IBM
Easyflow is a discontinued, DOS-based technical drawing software for creating flowcharts, business process models, etc. The program saved diagrams in an EFS file. This file format is classified as CAD.

Technical Data for EFS File Extension

File classification:

Developer

Related files:

$efs, hbcifs, nr5g_fp_db, ifs, eps, esf, efs_ntfs, img, sha2, win, pfile, bin, tar, txt, zip

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: efsFile
EXEFile: %ProgramFiles%\efs\search.exe %1

ProgramID: EFSFileType
EXEFile: %ProgramFiles%\eSignal\winsig.exe

an efs formula script is a special file format by Intercontinental Exchange and should only be edited and saved with the appropriate software.

How to solve problems with EFS files

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