Convert OGG to FLAC online
Free, no sign-up, no limits. Drop your OGG files, get FLAC files back in seconds.
1 files converted so far
Drop your OGG files here
or · multiple files accepted
Local conversion: your files never leave your device.
Why convert OGG to FLAC?
You received a WhatsApp, Telegram or Discord voice message (.opus/.ogg) and it will not open on your computer, car stereo or editing software. FLAC solves the problem.
How to do it, step by step
- Drop your OGG 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 OGG format (Ogg Vorbis)
OGG Vorbis is a free and open format, a competitor to MP3, widely used in video games, on Wikipedia, Spotify (internally) and on Linux. Good quality, but poor compatibility on Apple devices and many car stereos.
- Completely patent-free
- Good quality
- Small
- Not natively played by iPhone/iTunes
- Few compatible 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
OGG vs FLAC comparison
| OGG | FLAC | |
|---|---|---|
| Compression | Lossy | Lossless |
| Typical size (1 min, music) | ≈ 1.2 MB | ≈ 5 MB |
| Common use | video games, Linux, Wikipedia, WhatsApp voice messages (.opus/.ogg) | CD archiving, audiophiles, Bandcamp, Qobuz |
| Metadata (title, cover art) | Yes | Yes |
Frequently asked questions
Does converting OGG to FLAC lose quality?
No: FLAC is a lossless format. The sound of the converted file is strictly identical to that of the original OGG, but the quality already lost during OGG compression is not recovered.
Is the OGG 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 OGG files uploaded to the internet?
No. The OGG to FLAC conversion is performed by FFmpeg directly in your browser (WebAssembly). Your files never leave your computer or phone.
How do I convert OGG to FLAC on iPhone or Android?
Open this page in Safari or Chrome, tap the drop area, select your OGG file (from Files, Voice Memos, Downloads or WhatsApp), then tap "Convert". The FLAC downloads to your files.
Can I convert several OGG 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.