Convert FLAC to OGG
Convert FLAC audio files to OGG Vorbis directly in your browser. OGG Vorbis is the patent-free lossy codec used by Spotify (legacy), game engines, Wikipedia, and open-source media stacks. Compresses lossless FLAC ~5x for distribution. No upload needed.
Drag 'n' drop files here, or
click to select files
.flac
Drop your files and click Convert to get OGG
//when_to_use
When to Convert FLAC to OGG
- Converting FLAC studio masters to OGG Vorbis for shipping as in-game music in Unity, Godot, or Unreal projects
- Preparing FLAC podcast masters as OGG for self-hosted Funkwhale, Castopod, and AzuraCast streaming servers
- Encoding FLAC field recordings as OGG for upload to Wikipedia / Wikimedia Commons (which mandates patent-free formats)
- Distributing FLAC band releases as OGG previews on Bandcamp Friday feeds and Mastodon embeds
- Converting FLAC archives to OGG for sync to Linux phones (PinePhone, Librem 5) and OSS Android players (Vanilla Music, Symphony)
//comparison
FLAC vs OGG
| Property | FLAC | OGG |
|---|---|---|
| Compression | Lossless (FLAC level 5) | Lossy (Vorbis q5 VBR) |
| Typical size (3 min) | 18-25 MB | 3-4 MB |
| Quality at default | Bit-perfect | Transparent at 160 kbps |
| Patent / royalty | Open, royalty-free | Patent-free, royalty-free |
| Game engine support | Rare (large size) | Built-in everywhere |
| Best for | Archival, mastering | Distribution, streaming, games |
//how_it_works
How It Works
Drop your FLAC files
Drag and drop or pick FLAC files. First conversion loads FFmpeg WASM (~30MB).
FFmpeg decodes FLAC
FFmpeg WASM parses FLAC stream info and metadata blocks, then decodes residuals + predictors back to 16-bit PCM at the source rate.
Vorbis encode (q5)
PCM is re-encoded with libvorbis at quality 5 (~160 kbps VBR), then packetized into a framed OGG bitstream.
Download OGG files
OGGs play natively in Firefox, VLC, Foobar2000, every game engine, and most Linux/Android players.
// under the hood
FLAC (Free Lossless Audio Codec) uses linear prediction + Rice coding for bit-perfect compression. OGG Vorbis is an MDCT-based lossy codec by Xiph.Org. Our converter uses FFmpeg WASM to decode the FLAC stream into 16-bit PCM, then re-encode with libvorbis at quality 5 (~160 kbps VBR) and mux into an OGG container with framed Vorbis packets.
//faq
Frequently Asked Questions
- Will I lose quality going from FLAC to OGG?
- Yes — Vorbis is lossy. At quality 5 (~160 kbps VBR) on a FLAC source, most listeners can't distinguish the OGG from the original on consumer headphones, but bit-perfect comparison reveals discarded frequency content. For archival, keep the FLAC and treat the OGG as a distribution copy.
- Why pick OGG over MP3 from a FLAC source?
- Vorbis sounds noticeably better than MP3 at the same bitrate and is patent-free. Game engines (Unity, Godot, Unreal) ship with built-in Vorbis decoders — using AAC or MP3 in commercial games requires a paid Fraunhofer license. Mozilla, Wikipedia, and Linux distros default to OGG for the same reason.
- What Vorbis quality do you use?
- We encode with FFmpeg's libvorbis at quality 5 (~160 kbps VBR) — Vorbis's transparent default and the historical Spotify Free encoding profile. From a lossless FLAC source this is the sweet spot: smaller than 192 kbps with no audible quality penalty for typical listeners.
- How much smaller will the OGG be?
- FLAC is typically 50-60% the size of uncompressed PCM. Quality 5 Vorbis from the same source is ~10-12% — about 5x smaller than FLAC. A 25 MB FLAC track becomes a 4-5 MB OGG. Storage and bandwidth savings are substantial for distribution catalogs.
- Are my FLAC files uploaded?
- No. FFmpeg WebAssembly runs entirely in your browser. The FLAC is decoded and the OGG is encoded locally — nothing is uploaded.
//related_converters
Related Converters
Similar conversions you might need.
Convert FLAC to MP3
Convert lossless FLAC audio to compact MP3 for any device.
→Convert FLAC to WAV
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→Convert FLAC to AAC
Convert lossless FLAC to AAC for Apple ecosystem playback, iPhone, iPad, and Apple TV.
→Convert MP3 to OGG
Convert MP3 audio files to open-source OGG Vorbis format.
→Convert WAV to OGG
Convert uncompressed WAV audio to compact open-source OGG Vorbis format.
→Convert AAC to OGG
Convert AAC audio to OGG Vorbis for open-source ecosystems and Linux compatibility.
→