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MP3 to WAV Converter

Convert MP3 audio to uncompressed WAV with optional resampling and channel selection

Click to upload file or drag and drop file here

Maximum file size: 50MB Supported formats: audio/mpeg, audio/mp3

Upload an MP3 file to convert to WAV

Key Facts

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

Overview

The MP3 to WAV Converter allows you to transform compressed MP3 audio files into high-quality, uncompressed WAV format. This tool provides precise control over your audio output, including options for custom sample rates, channel configurations, and metadata preservation.

When to Use

  • •When you need uncompressed audio for professional editing or production software.
  • •When you need to change the sample rate or channel count of an existing MP3 file.
  • •When you require a lossless format for archival purposes or compatibility with legacy hardware.

How It Works

  • •Upload your source MP3 file using the file selector.
  • •Select your preferred sample rate and channel configuration from the dropdown menus.
  • •Toggle the metadata option if you wish to preserve existing file tags.
  • •Click the convert button to process your file and download the resulting WAV audio.

Use Cases

Preparing audio tracks for professional DAW software that requires uncompressed WAV files.
Standardizing audio assets to a specific sample rate for video editing projects.
Converting stereo music files into mono for specific hardware or broadcast requirements.

Examples

1. Professional Audio Editing

Sound Engineer
Background
A sound engineer needs to import an MP3 voiceover into a professional DAW that only accepts uncompressed audio formats.
Problem
The DAW does not support compressed MP3 files, causing import errors.
How to Use
Upload the MP3 file, set the sample rate to 48 kHz, and ensure 'Keep Metadata' is checked.
Example Config
sampleRate: 48000, channels: auto, keepMetadata: true
Outcome
A high-quality 48 kHz WAV file ready for seamless integration into the editing timeline.

2. Hardware Compatibility

Podcast Producer
Background
An older digital audio player requires files to be in mono WAV format to play correctly.
Problem
The original stereo MP3 file plays incorrectly or not at all on the legacy device.
How to Use
Upload the MP3 file and select 'Mono (1 channel)' from the channel options.
Example Config
sampleRate: auto, channels: 1, keepMetadata: false
Outcome
A mono WAV file that is fully compatible with the legacy playback hardware.

Try with Samples

audio, file
Copyright-Free WAV Audio Samples
Uncompressed PCM WAV audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music
title token wav
audio
Copyright-Free MP3 Audio Samples
Collection of royalty-free audio samples for testing and development purposes including nature sounds, meditation music, and ambient audio
title token mp3
audio
Copyright-Free FLAC Audio Samples
Lossless FLAC audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music
preferred input family audio
audio
Copyright-Free AAC Audio Samples
High-quality AAC encoded audio samples for testing and development, featuring nature sounds and meditation music with excellent compression
preferred input family audio
audio

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FAQ

Is the output WAV file compressed?

No, the output is an uncompressed PCM WAV file, which maintains the original audio quality without further compression artifacts.

Can I convert multiple files at once?

This tool is designed to process one audio file at a time.

What is the maximum file size I can upload?

You can upload MP3 files up to 50MB in size.

Does this tool support changing the sample rate?

Yes, you can choose between auto, 44.1 kHz, 48 kHz, or 96 kHz to suit your project requirements.

Will my ID3 tags be saved?

Yes, if you enable the 'Keep Metadata' option, the tool will attempt to preserve title and artist information during the conversion.

API Documentation

Request Endpoint

POST /en/api/tools/mp3-to-wav

Request Parameters

Parameter Name Type Required Description
audioFile file (Upload required) Yes Upload an MP3 file to convert to WAV
sampleRate select No -
channels select No -
keepMetadata checkbox No -

File type parameters need to be uploaded first via POST /upload/mp3-to-wav 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-mp3-to-wav": {
      "name": "mp3-to-wav",
      "description": "Convert MP3 audio to uncompressed WAV with optional resampling and channel selection",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=mp3-to-wav",
      "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]