A daily updated filename extension database!

EFS file extension

The table below provides useful information about the .efs file extension. It answers questions such as:

  • What is the .efs file?
  • What program do I need to open a .efs file?
  • How can the .efs file be opened, edited or printed?
  • How can I convert .efs files to another format?

We hope you find this page helpful and a valuable resource!

2 extension(s) and 0 alias(es) found in database

✅ SQ-80 Sample

EFS file is a SQ-80 Sample. The Ensoniq SQ-80 is a synthesizer from Ensoniq. It was basically an update to the original Ensoniq ESQ-1 but included more waveforms, a floppy disk drive for storing patches and sequences.
EFS format description not yet available
Category: Audio files
Application: -
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
EFS aliases:
EFS related links:
EFS related extensions:
Audio Interchange File

CD Audio Track

MIDI Music

MPEG Audio Layer 3 File

Macintosh Sound Resource

Creative Labs Sound Blaster Sound

Windows Waveform Sound

AC-3 Compressed Audio

Free Lossless Audio Codec File

Monkey`s Audio File

✅ Kryptel Filesets File

EFS file is a Kryptel Filesets File. Kryptel is a drag-and-drop file and folder encryption that uses strong cryptographic algorithms.
Category: Archive files
Application: Kryptel
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
EFS aliases:
EFS related links:
EFS related extensions:
Kryptel Encrypted Container

Kryptel Backup File

Kryptel Encrypted Data

Other types of files may also use the .efs file extension.

🚫 The .efs file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

3fs, dfs, ebs, ecs, eds, ees, ef, efc, efe, efq, efw, efx, efz, egs, ers

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

EVS GZip Compressed Field Data
Edinburgh Instruments FLS1000 Data
FlexiSign Document
Forth Source Code
F# Implementation
Sibelius Configuration File
KSP Saved Game
Steganos Password Manager Container File
Enthuware Test Studio Document
Samsung RFS Image

🔴 Can't open a .efs file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .efs file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .efs file extension, write to us!

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