Free Online Audio Converter

Convert, record, and analyze audio files directly in your browser. 100% private - no uploads required.

Drop audio files here or click to browse

Supports MP3, WAV, OGG, FLAC, AAC, M4A, WebM

Loading audio engine...
Downloading ~25MB, please wait
Stuck?
00:00

Drop an audio file to analyze

Get detailed information about format, bitrate, duration and more

About This Audio Converter

This free online audio converter runs entirely in your browser using WebAssembly technology. Your files are never uploaded to any server - all processing happens locally on your device for maximum privacy and speed.

Supported Formats

MP3

Most compatible format. Use VBR (Variable Bitrate) for best quality-to-size ratio, or CBR for streaming.

WAV

Uncompressed lossless audio. Large files but perfect quality. Choose 16-bit for CD or 24-bit for studio.

OGG Vorbis

Open-source format with excellent quality at smaller sizes than MP3. Great for games and apps.

FLAC

Lossless compression - perfect quality at ~50% of WAV size. Ideal for archiving music collections.

AAC

Advanced codec, better than MP3 at same bitrate. Used by Apple, YouTube, and most streaming services.

WebM

Web-optimized format using Opus codec. Best for HTML5 audio and modern web applications.

How to Use

  1. Drag and drop your audio file(s) or click to browse
  2. Select your desired output format (MP3, WAV, OGG, etc.)
  3. Adjust quality settings like bitrate and sample rate
  4. Click "Convert Files" and download your converted audio

Frequently Asked Questions

Is this audio converter really free?

Yes, this tool is completely free with no limitations, hidden fees, or subscriptions.

Are my files uploaded to a server?

No. All processing happens locally in your browser using WebAssembly. Your files never leave your device.

What's VBR vs CBR for MP3?

VBR (Variable Bitrate) adjusts quality dynamically, giving better sound at smaller file sizes. CBR (Constant Bitrate) is better for streaming. For music, use VBR V0-V2.

What's the best format for music?

For archiving: FLAC (lossless). For everyday use: MP3 VBR V0-V2 or AAC 256kbps. For smallest size: OGG quality 6.

The converter seems stuck, what do I do?

The audio engine is ~25MB and may take time to load on slow connections. If truly stuck, use the "Refresh Page" button or press F5.

Can I convert multiple files at once?

Yes! You can drag and drop multiple audio files and convert them all in batch with your chosen settings.