Audio Converter
Convert between MP3, WAV, OGG, FLAC, M4A and Opus. 100% in your browser, your audio is never uploaded anywhere.
Drag your audio here or click to select
MP3, WAV, OGG, FLAC, M4A, AAC, Opus · no artificial size limit
Built by
Miguel Ángel Colorado Marin (MACM)
Built by
Miguel Ángel Colorado Marin (MACM)
Full-Stack Developer · Guadalajara, España
I develop web apps, digital tools and full projects — from design to deployment.
The audio converter lets you switch any audio file between the most common formats — MP3, WAV, OGG, FLAC, M4A (AAC) and Opus — with nothing to install and no upload to any server. It's useful for converting an uncompressed WAV to MP3 to save space, turning an audio file into WAV when an editing program only accepts that format, or converting to Opus for the smallest possible file size with good quality. For lossy formats (MP3, OGG, M4A, Opus) you can choose the output bitrate between 128 and 320 kbps. All processing runs with FFmpeg compiled to WebAssembly inside your own browser.
Features
- ✓MP3, WAV, OGG, FLAC, M4A, Opus
- ✓Bitrate control (128–320 kbps)
- ✓Preview before and after
- ✓Direct download
- ✓100% in browser, no uploads
How to convert an audio file?
- 1
Upload your audio
Drag the file or click to select it.
- 2
Choose the output format
MP3, WAV, OGG, FLAC, M4A or Opus.
- 3
Adjust the quality
For lossy formats, choose the bitrate between 128 and 320 kbps.
- 4
Download the result
Listen to the result in the player and download it with one click.
Frequently asked questions
Is my audio uploaded to a server?
No. The conversion is processed with FFmpeg compiled to WebAssembly inside your browser. The file never leaves your device.
What formats does it support?
As input, practically any common audio format. As output: MP3, WAV, OGG, FLAC, M4A and Opus.
What bitrate should I choose?
192 kbps is a good balance for music. 320 kbps for maximum quality, 128 kbps if file size matters most.
Is there a size limit?
Yes, 300 MB per file.
Related tools
Embed Audio Converter on your site
Add Audio Converter to any web page with a simple iframe. Free, with attribution to miguelacm.es.
<iframe
src="https://miguelacm.es/embed/audio-converter"
width="100%"
height="700"
frameborder="0"
title="Audio Converter — miguelacm.es"
></iframe>