WAV to MP3
Shrink a WAV file to a small compressed audio file in your browser — free, no upload — free, fast and private.
Choose an audio file to begin.
Your result will appear here.
How to use WAV to MP3
- Choose a WAV file.
- Click Process Audio to compress it to WebM/Opus.
- Wait while it records through.
- Download the small audio file.
Honest limit: browsers cannot encode native MP3. This tool compresses your WAV to WebM/Opus audio instead — a small file with very similar quality that plays in all modern browsers and players. It is NOT a native .mp3 file.
Frequently Asked Questions
Is the WAV to MP3 free?
Yes, it is 100% free with no sign-up. Your files and data stay in your browser.
Is the output a real MP3 file?
No — browsers cannot encode MP3. The output is WebM/Opus, a modern compressed format with similar quality and a small file size.
Is my file uploaded to a server?
No. This tool runs entirely in your browser — your file is never uploaded.
How much smaller is the file?
Typically 80–90% smaller than the WAV.