01
Add your WEBM
Drop a WEBM video (or audio-in-WEBM) on the panel, choose it from disk, or open it from Your Library.
WEBM to MP3
Extract audio from a WEBM video into MP3 for music apps, podcasts, and sharing — right in your browser.
Drop a WEBM file here
or click to choose from your computer
WEBM · VP8 · VP9 · browser recordings
Your file will be converted to MP3 (audio). Click Convert when ready.
Converting…
Local processing in your browser · Files are not uploaded to our servers
About WEBM to MP3 conversion
WEBM files from browser recordings often include both picture and sound. WEBM to MP3 keeps only the soundtrack as a compact MP3 you can play on phones, in music apps, or in audio editors.
Sound Booster extracts audio in the browser: add a WEBM, convert to MP3, then download or save to Your Library. Everyday files are meant to stay on your device for this step rather than being uploaded to a remote server.
Use this when you recorded a meeting, lesson, or tutorial as video but only need the voice track, or when a form accepts MP3 and not WEBM. Support teams and creators often strip audio from a screen capture before attaching a small file to a ticket or chat.
Silent WEBM files will not produce useful audio — check that the recording included a microphone or system sound. Progress is shown as a percentage while encoding runs. Very long clips need enough memory; if conversion fails, try a shorter segment first.
How to convert WEBM to MP3
02
Convert to MP3
Click Convert to MP3. Video is discarded; only the soundtrack is encoded. Progress shows as a percentage.
03
Download or save
Save the MP3 file, or store it in Your Library for Volume Booster and other audio tools.
MOV and MP4 formats
What is a WEBM file?
WEBM is a web media container. Browser recordings often include both picture and sound. When you only need the voice or music track, extracting audio to MP3 is faster than keeping a full video file.
What is an MP3 file?
MP3 is a widely supported compressed audio format. It is small enough for sharing and accepted by most phones, cars, and podcast tools. Quality depends on bitrate; this tool targets a practical balance for speech and general listening.
What people use it for
Voice from screen recordings
Keep the narration from a WEBM capture without the video track — ideal for meetings and tutorials where the picture is secondary.
Podcasts and voice notes
Turn a browser recording into an MP3 ready for players, podcast tools, and simple audio editors.
Smaller files for sharing
Send audio instead of a full WEBM when the picture is not needed and inbox size limits matter.
Audio tools next
Save MP3 to Your Library and open Volume Booster, Trimmer, or other Sound Booster tools without re-uploading.
Frequently asked questions
Is video removed?
Yes. WEBM to MP3 exports audio only; the picture is not kept in the MP3 file.
Do my files leave this device?
No. Conversion is designed to run in the browser.
What if the WEBM has no sound?
You will not get a useful MP3. Check that the recording included a microphone or system audio.
Is it free?
Yes on this page, without a mandatory account.
Why did conversion fail?
Try Chrome or Edge, a shorter file, and keep the tab open until progress reaches 100%.