How to Change WebM to MP3 on Chromebook
WebM audio usually comes from recordings made in a browser or by web-based voice and screen recorders. Drop your WebM below to save it as an MP3, trimming it on the waveform first if you want. It all happens on your Chromebook.
Drop an audio file here
MP3, WAV, M4A, OGG, FLAC… · nothing is uploaded
Trimmed on your device. Your audio is never uploaded.
The steps: Change WebM to MP3 on Chromebook
- 1
Open this page in Chrome on your Chromebook.
- 2
Click the box above and pick the file in the Files app (My files, Downloads or Google Drive), or drag it in.
- 3
The full track is selected to start with. Only drag the waveform handles if you want to shorten it.
- 4
Pick MP3 as the format (it's selected already), then download. Click Download. The file is saved in My files › Downloads.
What changes going from WebM to MP3
- Your MP3 is encoded at 192 kbps – for most listening you can't tell it from the original, and it takes about 1.4 MB per minute.
WebM and MP3 in brief
- WebM audio usually comes from recordings made in a browser or by web-based voice and screen recorders. Phones and editing apps often won't open it.
- MP3 is the audio format that plays on every phone, car stereo, speaker, editor and website. It's lossy, which keeps files small.
Chromebook tips
- Managed school and work Chromebooks often block apps and extensions. This tool needs neither – it's just a normal Chrome tab.
- After the page has loaded, the conversion works even without an internet connection.
- Decoding uses your browser's own audio support. If one browser can't open the file, try Chrome or Firefox.
WebM vs MP3
| WebM | MP3 | |
|---|---|---|
| Compression | Lossy (Opus or Vorbis) | Lossy |
| Ideal for | Recording in a browser | Music, ringtones and anything that has to play everywhere |
| Works on | Chrome and Firefox; limited elsewhere | Everywhere |
Questions & answers
Will WebM to MP3 make it sound worse?
Very slightly, since MP3 is lossy, but at 192 kbps the difference is extremely hard to hear.
Can I trim the audio while I'm at it?
Yes. Drag the start and end handles on the waveform, play it back, and add a fade in or fade out if you like.
Do my recordings get sent anywhere?
No. Your browser does the conversion with your device's own processor, so your recordings stay with you. Once the page has loaded you could even switch off your internet connection.
Where do I find the converted file on my Chromebook?
Click Download. The file is saved in My files › Downloads.
Need more options? Open the full Audio Trimmer tool →