Batch Audio Converter

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

Related Tags
Audio 254 Multiple 121 Files 94 MP3 29 AAC 20 OGG 16 Opus 15 WAV 15 FLAC 11

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 allows you to convert up to 10 audio files simultaneously into formats like MP3, WAV, FLAC, AAC, M4A, OGG, and Opus. You can customize output settings including bitrate, compression quality, sample rate, and audio channels while preserving original metadata.

When to Use

  • •When you need to convert multiple audio recordings to a single format like MP3 or WAV in one go.
  • •When you need to compress large lossless audio files like FLAC into smaller, highly compatible formats like AAC or MP3 to save storage space.
  • •When preparing audio assets for web or mobile applications by adjusting sample rates, channels, and bitrates to optimize performance.

How It Works

  • •Upload up to 10 audio files in supported formats such as MP3, WAV, FLAC, AAC, OGG, or Opus.
  • •Select your target output format and configure optional settings like bitrate, sample rate, channels, and metadata preservation.
  • •Click the convert button to process the files and download the converted audio files.

Use Cases

Converting high-fidelity FLAC studio recordings to 320 kbps MP3 files for easy sharing and playback on mobile devices.
Batch-converting voice memos from WAV to OGG or Opus format to reduce file sizes for web hosting.
Standardizing a batch of mixed-format sound effects to a uniform 44.1 kHz, 16-bit WAV format for a game development project.

Examples

1. Compressing FLAC files to MP3 for mobile storage

Music Enthusiast
Background
A user has a collection of high-resolution FLAC audio tracks that take up too much space on their phone.
Problem
They need to convert these tracks to high-quality MP3s to save storage space without losing too much audible quality.
How to Use
Upload the FLAC files, select 'MP3' as the output format, choose '320 kbps (Highest Quality)' for the bitrate, and keep 'Preserve Metadata' checked.
Example Config
Output Format: MP3, Bitrate: 320k, Quality: Auto, Sample Rate: Auto, Channels: Auto, Preserve Metadata: True
Outcome
The user receives compressed MP3 files with intact metadata tags, ready for mobile playback.

2. Standardizing podcast recordings for editing

Podcast Producer
Background
A producer receives raw interview recordings in various formats like M4A and WAV from different remote guests.
Problem
They need to standardize all files to a consistent WAV format at 48 kHz stereo before importing them into editing software.
How to Use
Upload the mixed M4A and WAV files, select 'WAV' as the output format, set the sample rate to '48 kHz', and set channels to 'Stereo'.
Example Config
Output Format: WAV, Sample Rate: 48000, Channels: 2, Preserve Metadata: True
Outcome
All uploaded files are converted to uniform 48 kHz stereo WAV files, ensuring compatibility in the digital audio workstation.

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

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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.
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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 can I convert between?

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

How many audio files can I convert at the same time?

You can upload and convert up to 10 audio files simultaneously in a single batch.

Can I keep the original audio tags and metadata?

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

What is the maximum file size limit for uploads?

The total size limit for the uploaded batch of audio files is 60 MB.

Can I change stereo audio files to mono?

Yes, you can set the Audio Channels option to 'Mono (1 channel)' to downmix your stereo files.

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 -

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]