Convert WebM to FLAC
Ethical Tube's free WebM to FLAC converter saves the soundtrack of WebM videos as FLAC, lossless compressed audio. It runs entirely in your browser, so your videos are never uploaded, and it's free with no sign-up or watermark.
Files are converted on your device and never uploaded.
- Price
- Free
- Uploads
- None, it runs on your device
- Sign-up
- Not needed
- Batch
- Unlimited files
- Output
- FLAC, lossless
- Install
- Nothing to install
How it works
How to convert WebM to FLAC
Add your WebM files
Drop WebM files onto the converter, click to choose them, or paste from the clipboard. Add as many as you like.
Check the settings
FLAC is already selected. There's nothing to adjust, because FLAC keeps the full quality of the source.
Download your FLAC audio files
Each file gets its own download button as soon as it's ready. Download all saves everything in one ZIP file.
The formats
WebM and FLAC at a glance
What is a WebM file?
WebM is an open, royalty-free video format from Google, built for the web. It holds VP8, VP9, or AV1 video with Opus or Vorbis audio, and it's what Chrome and many screen recorders, including Ethical Tube, save by default. QuickTime, iMovie, and some editors can't open it. It opens in Chrome, Edge, Firefox, and Safari, VLC, YouTube, Google Drive, and editors like Shotcut and Kdenlive. QuickTime and iMovie can't open it.
What is a FLAC file?
FLAC compresses audio without losing any quality, usually to about half the size of a WAV file. Music collectors and hi-res music stores use it because it keeps CD-quality or better audio bit for bit. It opens in Windows 10 and 11, Android, VLC, foobar2000, browsers, and most hi-fi players. On iPhone and Mac it plays in the Files app, QuickTime, and VLC, but the Music app can't import it.
Good to know
What changes when you convert WebM to FLAC
- Only the soundtrack is saved; the picture is dropped.
- The audio is saved as lossless FLAC.
- If the video's audio is already FLAC, it's copied without re-encoding, so there's no quality loss.
- FLAC is lossless, but it can't add back quality that the video's compressed audio never had, and the file will be bigger.
- Copy-protected (DRM) files can't be converted.
- Very long videos can run out of memory, especially on phones.
FAQ
Questions, answered
Is this WebM to FLAC converter free?
Yes. It's completely free, with no sign-up, no watermark, and no limit on how many files you convert. It costs Ethical Tube nothing to run, because the conversion happens on your own device rather than on a server.
Are my files uploaded anywhere?
No. The conversion runs inside your browser with Mediabunny and your browser's WebCodecs video encoders, so your files never leave your device. Once the page has loaded, it even works offline.
Does converting WebM to FLAC lose quality?
No. FLAC is lossless, so nothing is lost in the conversion. It can't add back quality that the WebM compression removed, though.
How long does it take?
When the video can be copied without re-encoding, a few seconds. Otherwise it depends on the video's length and resolution and on your device. With a hardware encoder, a 10-minute 1080p video usually takes a few minutes on a laptop.
Can I convert several WebM files at once?
Yes. Add as many as you like. They're converted one after another, and you can download each FLAC file as soon as it's ready or all of them in one ZIP file.
Does it work on iPhone, Android, Mac, and Windows?
Yes. It works in current versions of Chrome, Edge, Safari, and Firefox. Phones handle short clips well, and long or 4K videos convert best on a computer.
What can open a FLAC file?
Windows 10 and 11, Android, VLC, foobar2000, browsers, and most hi-fi players. On iPhone and Mac it plays in the Files app, QuickTime, and VLC, but the Music app can't import it.
Is there a file size limit?
There's no upload limit because nothing is uploaded. The practical limit is your device's memory: everyday files are fine, and a computer can usually handle videos up to about 2 GB.
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