WEBM to MP3 Converter: Free, No Upload

Convert WEBM to MP3 in this browser, with nothing to download or install

FromWEBMTo

Quality

Higher kbps sounds closer to the original and makes a bigger file

MP3 · 192 kbps · original channels · original sample rate

Your files never leave this device

How to convert WEBM to MP3

Audio and video files
Open MP4, MOV, MKV, WEBM, M4A, WAV, FLAC, OGG, OPUS, AAC, and MP3 files, and save them as MP3, WAV, M4A, FLAC, or OGG
Sound from a video
Save the sound of a film, a talk, or a music video as its own file, and keep it unchanged when you pick the format marked Original
Many files at once
Drop a whole folder, convert every file with one press, and save them all with Download all
Settings you control
Pick the bitrate, keep one part with Trim, make it mono, change the sample rate, fade the ends, or even out the loudness
Nothing is uploaded
Your files convert on your device, so a private recording never leaves it
Works in your browser
Use it on Windows, Mac, iPhone, iPad, or Android, with nothing to install and no account

WEBM is a web video format made by Google. It comes from browser recordings and screen recorders, and the sound is usually Opus audio.

Detail	WEBM compared with MP3
Inside	WEBM holds VP8, VP9, or AV1 video with Opus or Vorbis sound. MP3 holds sound only.
Where it comes from	Recordings made in Chrome and Firefox, web screen recorders, and some downloads from web pages.
Plays on	Browsers play WEBM. Many phones, cars, and music apps do not. MP3 plays on all of them.
Size	An MP3 at 192 kbps is about 1.4 MB per minute. For speech, Small file is about 1 MB per minute.
WEBM audio to MP3	Your browser decodes the Opus or Vorbis track and encodes MP3. The video track is left out.
No sound	Some screen recordings have no audio track at all. A note then says the file has no sound.

With ffmpeg
For WEBM to MP3 ffmpeg needs one line: ffmpeg -i in.webm -vn -c:a libmp3lame -b:a 192k out.mp3.
On Mac
For WEBM to MP3 Mac users convert in Safari or Chrome. QuickTime does not open WEBM.
On Windows
For WEBM to MP3 Windows users convert in Edge or Chrome. There is no program to download.
Record with sound next time
When you share a tab in Chrome, tick Also share tab audio. Without it, the WEBM has no sound to convert.

Is there a good WEBM to MP3 converter I can download?: You do not need one. The browser does the job, with no install. If you prefer a program, VLC and ffmpeg are free.
How do I convert WEBM to MP3 with FFmpeg?: Run ffmpeg -i in.webm -vn -c:a libmp3lame -b:a 192k out.mp3. The -vn flag leaves out the video.
What is a WEBM file?: It is an open web video file. Browsers make it when they record the screen, the camera, or a call.
Can I convert WEBM to MP3 without a download?: Yes. Your browser does the conversion, so there is no program to download.
Why does my WEBM have no sound?: The recording had no audio track. In Chrome, tick Also share tab audio when you start to share, or pick a microphone in the recorder.
Does WEBM to MP3 lose quality?: A little, because Opus and MP3 are both lossy. At 192 kbps it is hard to hear. For no loss, pick the format marked Original to save the Opus track as OGG.
Are my WEBM files uploaded?: No. Your browser reads them on your device and never sends them.

Screen recordings can show private things. A WEBM to MP3 online site uploads the whole file. Your recording converts only on your device.

The browser that made your recording can also call any phone with Suparelay.