Batch Audio Converter

Convert multiple audio files between different formats like MP3, WAV, FLAC, AAC, OGG, Opus with quality settings and batch processing

Click to upload files or drag and drop files here

Maximum file size: 60MB Maximum files: 10
Supported formats: audio/mpeg, audio/wav, audio/flac, audio/aac, audio/mp4, audio/ogg, audio/opus, audio/x-wav, audio/x-m4a

Key Facts

Category
Images, Audio & Video
Input Types
file, select, checkbox
Output Type
file
Sample Coverage
4
API Ready
Yes

Overview

The Batch Audio Converter is a powerful utility designed to convert up to 10 audio files simultaneously between popular formats like MP3, WAV, FLAC, AAC, OGG, and Opus. With customizable settings for bitrate, compression quality, sample rate, and audio channels, you can easily optimize your audio files for any device or platform while preserving original metadata and file names.

When to Use

  • •When you need to convert multiple high-fidelity FLAC or WAV recordings into compressed MP3 or AAC files to save storage space.
  • •When preparing audio assets for web or mobile applications that require specific formats like OGG or Opus at optimized bitrates.
  • •When standardizing a batch of voice memos or sound effects to a uniform sample rate and mono channel configuration.

How It Works

  • •Upload up to 10 audio files in supported formats such as MP3, WAV, FLAC, AAC, M4A, OGG, or Opus.
  • •Select your target output format and configure audio parameters including bitrate, compression quality, sample rate, and channels.
  • •Choose whether to preserve the original metadata tags and maintain the original file names for the output.
  • •Click convert to process the batch and download your optimized audio files.

Use Cases

Compressing large WAV podcast recordings into 128 kbps MP3 files for faster web distribution.
Converting music tracks to OGG or Opus formats for integration into game engines like Unity or Unreal.
Downsampling high-resolution audio files to 44.1 kHz stereo to ensure compatibility with legacy media players.

Examples

1. Optimizing Podcast Episodes for Web Streaming

Podcast Producer
Background
A producer has recorded three raw interview episodes in high-quality WAV format, but the files are too large for direct web hosting.
Problem
The raw WAV files need to be converted to standard MP3 format at 192 kbps to balance audio quality and file size.
How to Use
Upload the WAV files, select 'MP3' as the output format, set the bitrate to '192 kbps', keep the sample rate at '44.1 kHz', and ensure 'Preserve Metadata' is checked.
Example Config
Output Format: MP3, Bitrate: 192k, Sample Rate: 44100, Channels: Stereo, Preserve Metadata: True
Outcome
Three highly compressed yet clear MP3 files ready for upload to the podcast hosting platform, complete with original metadata.

2. Converting Sound Effects for Mobile Game Development

Game Sound Designer
Background
A sound designer has a collection of 8 stereo FLAC sound effects that need to be optimized for a mobile game to minimize the app bundle size.
Problem
The game engine requires OGG format, and the files must be mono at a lower sample rate to save memory.
How to Use
Upload the FLAC files, choose 'OGG Vorbis' as the output format, set the sample rate to '22.05 kHz', and change the audio channels to 'Mono'.
Example Config
Output Format: OGG, Sample Rate: 22050, Channels: Mono, Quality: 5
Outcome
Eight lightweight OGG audio files optimized for mobile performance, significantly reducing the game's memory footprint.

Try with Samples

audio, video, file
Copyright-Free FLAC Audio Samples
Lossless FLAC audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music
title token audio
audio
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 audio
audio
AMR Narrowband Audio Sample
AMR-NB voice audio sample for telephony playback, upload, and format conversion workflows
title token audio
audio
GSM Audio Sample
GSM encoded audio sample for telephony playback, upload, and format conversion workflows
title token audio
audio

Related Hubs

Audio Encoding and Format Conversion Tools
Compare audio format conversion, bitrate changes, sample-rate conversion, codec swaps, and export tools in one hub for delivery and archive workflows.
Video-to-Audio and Animation Conversion Tools
Compare tools that turn video into audio, extract video streams, and convert between short-form video and animated image formats in one hub.
Audio Editing and Cleanup Tools
Compare audio trimming, silence removal, fades, mixing, and denoise tools in one hub for podcast, voiceover, and music cleanup workflows.
Video Preview, Extraction, and Subtitle Tools
Compare video preview generation, stream extraction, audio extraction, subtitle translation, and quick flip tools in one hub for lightweight video prep workflows.

FAQ

What audio formats are supported for conversion?

You can convert between MP3, WAV, FLAC, AAC, M4A, OGG, and Opus formats.

How many files can I convert at the same time?

You can upload and convert up to 10 audio files in a single batch, with a total size limit of 60MB.

Can I keep the original metadata like artist and album tags?

Yes, by enabling the 'Preserve Metadata' option, the converter will copy original tags to the output files.

How do I convert stereo audio to mono?

Set the 'Audio Channels' option to 'Mono (1 channel)' before starting the batch conversion.

Does this tool support lossless conversion?

Yes, you can convert to lossless formats like FLAC or WAV to maintain maximum audio fidelity.

API Documentation

Request Endpoint

POST /en/api/tools/audio-batch-converter

Request Parameters

Parameter Name Type Required Description
audioFiles file (Upload required) Yes -
outputFormat select Yes -
bitrate select No -
quality select No -
sampleRate select No -
channels select No -
preserveMetadata checkbox No -
keepOriginalNames checkbox No -

File type parameters need to be uploaded first via POST /upload/audio-batch-converter 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-audio-batch-converter": {
      "name": "audio-batch-converter",
      "description": "Convert multiple audio files between different formats like MP3, WAV, FLAC, AAC, OGG, Opus with quality settings and batch processing",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=audio-batch-converter",
      "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]