Convert WEBM to MP3, Free
Upload your WEBM file and get a MP3 in seconds. No account, no watermark.
How to convert WEBM to MP3
WebM files contain Opus or Vorbis audio, which is not as universally supported as MP3 on standalone audio devices, car stereos, and older software. Extracting the audio from a WebM file as MP3 gives you a file that plays on any device without codec concerns.
BoltConverter extracts the audio stream from your WebM file on its servers and converts it to MP3. This is useful for grabbing the audio from browser-recorded WebM files, web-based video exports, or any WebM video where you only need the audio.
Upload your WebM file
Click the upload area or drag your .webm file onto the page.
Audio extraction on the server
The server extracts the Opus or Vorbis audio stream and encodes it as MP3.
Download the MP3
Save the MP3 file. It plays on any audio device or media player.
Frequently asked questions
What audio codec do WebM files use?
WebM files typically use Opus or Vorbis audio. Both are decoded and converted to MP3 by this converter.
Will the audio quality change?
Converting from Opus or Vorbis to MP3 involves re-encoding between two lossy codecs. Some quality degradation occurs, but at typical MP3 bitrates for voice or music the difference is generally not significant.
Can I extract audio from a browser screen recording in WebM?
Yes. Screen recordings made in Chrome or Firefox are saved as WebM. This converter extracts the audio track as MP3.
Is there a duration limit on the WebM file?
The file size limit applies rather than a duration limit. A 30-minute WebM at typical web quality is usually within the limit.
Does this extract only the first audio track?
Yes. The default audio track is extracted. WebM files rarely contain multiple audio tracks.