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Stereo to Mono Converter

Convert a stereo audio file to mono

Converts stereo audio to mono by mixing both channels together. Useful for reducing file size, compatibility with mono-only systems, or creating centered audio mixes. The resulting mono file combines the left and right channels equally.

Click to upload file or drag and drop file here

Maximum file size: 200MB Supported formats: audio/*

Key Facts

Category
Media
Input Types
file, select
Output Type
file
Sample Coverage
4
API Ready
Yes

Overview

The Stereo to Mono Converter transforms stereo audio files into mono by mixing the left and right channels equally. This tool is useful for reducing file size, ensuring compatibility with mono-only playback systems, or creating centered audio mixes without stereo separation.

When to Use

  • •When you need to reduce the file size of audio files for storage or transmission.
  • •When preparing audio for devices or platforms that only support mono playback.
  • •When you want a centered audio mix for voice-overs or mono-centric applications.

How It Works

  • •Upload your stereo audio file, such as MP3, WAV, or AAC, up to 200 MB.
  • •Select the desired output format from options like MP3, AAC, M4A, OGG, Opus, FLAC, or WAV.
  • •The tool mixes the left and right channels to produce a single mono track.
  • •Download the converted mono audio file in your chosen format.

Use Cases

Converting podcast episodes for distribution on mono-only audio platforms.
Reducing storage space for audio archives by converting stereo recordings to mono.
Creating voice-over tracks for videos where stereo separation is unnecessary.

Examples

1. Convert Podcast for Mono Platform

Podcast Producer
Background
A podcast producer has a stereo episode that needs to be uploaded to a platform requiring mono audio files.
Problem
The stereo file is incompatible with the mono-only platform, preventing upload.
How to Use
Upload the stereo podcast file, select MP3 as the output format, and convert to mono.
Outcome
A mono MP3 file is generated, ready for successful upload to the platform.

2. Reduce Audio File Size for Email

Background
An individual has a large stereo audio recording that exceeds email attachment limits.
Problem
The file is too big to send via email due to its stereo format and size.
How to Use
Upload the stereo audio file, choose a compressed format like AAC, and convert to mono.
Outcome
The file size is reduced, allowing it to be attached and sent via email.

Try with Samples

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Copyright-Free MP3 Audio Samples
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Copyright-Free WAV Audio Samples
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FAQ

What audio formats can I upload?

You can upload common audio formats like MP3, WAV, AAC, and others supported by the file input.

Will converting to mono affect audio quality?

The conversion mixes channels without altering the core audio, but mono output may lack stereo spatial effects.

Can I choose the output format?

Yes, you can select from MP3, AAC, M4A, OGG, Opus, FLAC, or WAV as the output format.

Is there a file size limit?

Yes, the maximum file size is 200 MB per upload.

How does the channel mixing work?

The tool averages the left and right channels to create a single mono channel, combining audio equally.

API Documentation

Request Endpoint

POST /en/api/tools/stereo-to-mono

Request Parameters

Parameter Name Type Required Description
audioFile file (Upload required) Yes -
outputFormat select No -

File type parameters need to be uploaded first via POST /upload/stereo-to-mono to get filePath, then pass filePath to the corresponding file field.

Response Format

{
  "filePath": "/public/processing/randomid.ext",
  "fileName": "output.ext",
  "contentType": "application/octet-stream",
  "size": 1024,
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}
File: File

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-stereo-to-mono": {
      "name": "stereo-to-mono",
      "description": "Convert a stereo audio file to mono",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=stereo-to-mono",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

Supports URL file links or Base64 encoding for file parameters.

If you encounter any issues, please contact us at [email protected]