Convert WebM to MP3
WebM is an open video format used for web video, browser-based screen recordings and many downloaded clips. Its audio is usually Opus or Vorbis, which is re-encoded to MP3 so it plays everywhere.
How to convert WebM to MP3
- 1
Select your WebM file
Drop the file in or click to choose it. It opens directly in your browser.
- 2
Choose the MP3 quality
128 kbps keeps files small, 192 kbps suits most audio, and 320 kbps gives the best music quality.
- 3
Convert and download
The audio track is decoded and encoded to MP3 on your device. Download the MP3 when it is done.
Frequently Asked Questions
Why does my WebM file fail in Safari?
WebM audio is usually Opus or Vorbis, which some Safari versions cannot decode. If conversion fails, use the latest Chrome, Edge or Firefox.
Is this WebM to MP3 converter free?
Yes. It is free with no account, no watermark and no limit on the number of files.
Is my file uploaded to a server?
No. Conversion runs locally in your browser using WebCodecs, so your file never leaves your device.
Is there a file size limit?
There is no upload, so there is no upload limit. Very long videos are limited only by your device's memory.