Convert WebM to MP3
Got a WebM from a browser recorder or web app? Upload it here to save the audio as an MP3 that works in any player.
Got a WebM from a browser recorder or web app? Upload it here to save the audio as an MP3 that works in any player.
WebM is an open video format built for the web. You tend to end up with one when you use a browser-based screen or webcam recorder, save a clip from a web app, or export from tools that favor open codecs. Browsers play WebM without fuss, but plenty of phones, car stereos, audio editors and older media players do not.
Changing a WebM into an MP3 removes that compatibility headache. The converter drops the video stream and encodes the sound as MP3 at 192 kbps constant bitrate. The sample rate of the source is preserved, which for most WebM audio means 48 kHz, and stereo or mono is left as it was. Nothing needs configuring before you press Convert.
A WebM file carries either Opus or the older Vorbis for its sound. Both are lossy, and both are efficient, which is why a WebM recording can sound good at a fairly low bitrate. Going to MP3 is a lossy-to-lossy re-encode.
| Audio codec in the WebM | Where it usually comes from | Output |
|---|---|---|
| Opus | Browser recorders, video calls, newer web tools | MP3 192 kbps, 48 kHz kept |
| Vorbis | Older WebM exports and encoders | MP3 192 kbps, source rate kept |
Because Opus and Vorbis are efficient, a 192 kbps MP3 made from them is frequently larger than the audio portion of the original. That does not mean better sound; the extra bits only give the MP3 encoder enough room to reproduce what was already there. Plan on roughly 1.44 MB per minute of output, so a 20-minute recorded call becomes about a 29 MB MP3.
Lots of WebM recordings are voice captured by a laptop mic. Those will sound the same after conversion, echo and background hum included, since the converter doesn't clean up or adjust volume.
If you have a bare Opus or OGG audio file instead of a video, the Opus to MP3 and OGG to MP3 pages cover those directly.
Browser recorders only capture audio when you grant microphone access or choose to share tab or system audio. If that was skipped, the WebM contains video alone and there is nothing to turn into an MP3. Try playing it in your browser first; if it's silent there, it will be silent here.
Record in shorter segments next time, or cut the existing file into parts with a video editor. Lowering the recording resolution in the tool's settings also keeps future files smaller while leaving audio quality alone.
WebM files written live by a browser sometimes report no duration or scrub badly in players. That is a quirk of how they were recorded. The MP3 is written as a regular file, so it generally shows a normal length.
We don't download anything from a link. You need the WebM on your own device, and you should have the right to use its content.
| Full name | MPEG-1/2 Audio Layer III |
|---|---|
| Compression | Lossy |
| Developed by | Fraunhofer IIS / MPEG |
| Introduced | 1993 |
| File extension | .mp3 |
| Typically used for | Music libraries, podcasts, everyday listening |
| Plays on | Virtually every phone, computer, browser, car stereo and media player |
| Our output | LAME MP3, 192 kbps CBR, stereo |
WebM video uses either Opus or Vorbis for its sound. Opus is the more common choice in browser recorders and video calls, while Vorbis shows up in older files. Both are lossy codecs, so converting to MP3 decodes the audio and encodes it again at 192 kbps.
Opus and Vorbis are efficient and often run at lower bitrates than MP3 needs for similar sound. Our MP3 output is always 192 kbps, about 1.44 MB per minute, so it can take more space than the original audio stream. The extra size doesn't add quality; it keeps the re-encode clean.
The WebM probably has no audio track. Browser-based recorders only capture sound when you allow microphone access or choose to share tab or system audio. Play the original file in your browser; if it's silent there, the audio was never recorded and can't be recovered by converting.
No. The converter doesn't download from URLs. Save the WebM to your device first, as long as it's your own recording or you have permission to use it, and then upload the file. Each upload can be up to 50 MB.
The uploaded WebM is deleted from our servers as soon as the conversion succeeds. The MP3 you download, and any leftover files, are removed automatically within about an hour. Nobody listens to your recordings, and we don't keep copies.
Need detailed information or want to set a different default format? Visit our specific converter pages: