Convert WEBM to FLAC online
Free, no sign-up, no limits. Drop your WEBM files, get FLAC files back in seconds.
1 files converted so far
Drop your WEBM files here
or · multiple files accepted
Local conversion: your files never leave your device.
Why convert WEBM to FLAC?
An online recorder, a screen capture or a YouTube download gave you a WebM file that your usual player rejects. FLAC is recognized everywhere.
How to do it, step by step
- Drop your WEBM fileinto the area at the top of the page (or several files at once). On mobile, tap the area and pick the file from your apps.
- Check the output format: FLAC is already selected. FLAC is a lossless format: there is no quality setting, the sound is reproduced identically. The file will be noticeably larger than a compressed format.
- Start the conversion.The FFmpeg engine loads once (≈ 10 MB), then each file is processed in a few seconds without leaving your device.
- Download your FLAC, directly or as a .zip if you converted several files. The name and metadata (title, artist, cover art) are preserved.
The WEBM format (WebM (audio))
WebM is an open web container, used by YouTube, screen recorders and the voice recorders built into browsers. Its audio is Opus or Vorbis. Many desktop applications and devices cannot play it.
- Open web format
- Produced by online recorders
- Rarely played outside a browser
- Zero compatibility with car stereos
The FLAC format (Free Lossless Audio Codec)
FLAC compresses audio with zero loss: the file is 40 to 60% the size of the original WAV but reproduces exactly the same sound. It is the format of choice for audiophiles and music archives. It is free, open, and supports metadata and cover art.
- Quality identical to the original
- Free and open format
- Supports tags and cover art
- Files 5 to 10 times larger than an MP3
- Not played by Apple devices without a third-party app
WEBM vs FLAC comparison
| WEBM | FLAC | |
|---|---|---|
| Compression | Lossy | Lossless |
| Typical size (1 min, music) | ≈ 0.8 MB | ≈ 5 MB |
| Common use | browser recordings, screen captures, downloaded YouTube videos | CD archiving, audiophiles, Bandcamp, Qobuz |
| Metadata (title, cover art) | Limited | Yes |
Frequently asked questions
Does converting WEBM to FLAC lose quality?
No: FLAC is a lossless format. The sound of the converted file is strictly identical to that of the original WEBM, but the quality already lost during WEBM compression is not recovered.
Is the WEBM to FLAC converter free?
Yes, with no limit on the number of files, no sign-up and no watermark. Each file can be up to 200 MB.
Are my WEBM files uploaded to the internet?
No. The WEBM to FLAC conversion is performed by FFmpeg directly in your browser (WebAssembly). Your files never leave your computer or phone.
How do I convert WEBM to FLAC on iPhone or Android?
Open this page in Safari or Chrome, tap the drop area, select your WEBM file (from Files, Voice Memos, Downloads or WhatsApp), then tap "Convert". The FLAC downloads to your files.
Can I convert several WEBM files at once?
Yes, add all your files in one go. They are converted one after another and a button lets you download everything as a .zip archive.