MONO Converter

Convert audio files (MONO) online for free

Select File
Drop or upload your .MONO file

Online File Converter

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How to convert your MONO file

Click the "Select File" button above, and choose your MONO file.
You'll see a preview.
Click the "Convert file to..." button to save your file in the format you want.

Convert MONO to another file type

The converter easily converts your MONO files to various formats - free and online. No Audacity or or other Audio software needed.

MONO to MNG
MONO to PCDS
MONO to DDS
MONO to PICON
MONO to YUV
MONO to DPX
MONO to JPG
MONO to PICT
MONO to XBM
MONO to MPC
MONO to PAM
MONO to FPX

Convert a file to MONO

The converter also works in reverse, so you can convert other "Uncompressed Audio / Encoded Binary" formats to MONO without using software like Audacity or a similar tool.

VIFF to MONO
FPX to MONO
SUN to MONO
JXR to MONO
MTV to MONO
DCM to MONO
EPS to MONO
EPSI to MONO
DCR to MONO
TGA to MONO
EPT to MONO
IMG to MONO

About MONO files

The .MONO extension is a classic example of file format ambiguity, typically representing one of two completely different data types.

1. RIFF WAVE Audio (The Practical Use Case):
In most recoverable scenarios, a .MONO file is simply a standard WAV audio file containing a single channel of sound (monophonic), but saved with a non-standard extension. This naming convention is sometimes used in older audio engineering pipelines or specific sample libraries to distinguish single-channel tracks from stereo pairs. Because the underlying structure is RIFF (Resource Interchange File Format), these files are uncompressed and high-quality, but they are also large and often unrecognized by modern media players due to the extension mismatch.

2. Monolith Encoded Data (The proprietary Lock-in):
A significant portion of .MONO files are binary containers created by Monolith, a legacy encryption tool. These files are "munged" (XOR encoded) versions of other files combined with a "Basis" file.

Practical Constraints & Friction:

The "Extension Lie": If it's an audio file, your OS won't know which app to use. You often need to manually rename the file to WAV to make it usable.
The Missing Key: If it's a Monolith file, it is mathematically impossible to open without the original "Basis" file used to create it. It acts as a digital paperweight without that key.
Size vs. Utility: The audio variants are uncompressed PCM audio, meaning they take up ~10MB per minute despite being mono.

Conversion Recommendations:

For Listening/Web: Convert the audio variant to MP3 or AAC (M4A) to reduce file size by 90% and ensure universal playback.
For Editing: Convert to standard WAV or AIFF to fix the header extension while maintaining lossless quality for use in Audacity or Adobe Audition.
For Archiving: If it is text or data (rare), wrap it in PDF/A.

Use Convert.Guru to open and convert your MONO file.

Users also converted PCM, WAV, SND and FLUX files.

FAQ

If you want to convert MONO file to FLUX, you can use Audacity or similar software from the "Monophonic Audio Storage" category. In the File menu, look for Save As… or Export….

To convert files to MONO, try Audacity or another comparable tool in the "Monophonic Audio Storage" category.

The MONO 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 MONO converter.