Convert OGG to FLAC
Convert OGG Vorbis files to FLAC lossless format directly in your browser. Useful when you need a stable archival file with no further generational loss during editing or re-encoding. No upload needed.
Drag 'n' drop files here, or
click to select files
.ogg, .oga
Drop your files and click Convert to get FLAC
//when_to_use
When to Convert OGG to FLAC
- Converting OGG Bandcamp downloads to FLAC for archival in a long-term music library
- Preparing OGG game audio assets as FLAC masters for re-export at multiple bitrates without cumulative loss
- Converting Wikipedia OGG audio recordings to FLAC for inclusion in research datasets requiring lossless audio
- Migrating OGG podcast episode masters to FLAC for stable archival before mastering passes in iZotope RX
- Converting OGG sound effect libraries to FLAC for use in DAW projects with no further generational loss
//comparison
OGG vs FLAC
| Property | OGG | FLAC |
|---|---|---|
| Compression | Vorbis (lossy) | FLAC (lossless) |
| Typical file size (4 min) | ~4 MB | ~20 MB |
| Generational loss | Cumulative on re-encode | None ever |
| Royalty-free | Yes | Yes |
| iOS support | Native (Files app) | iOS 11+ (Files, Apple Music) |
| Best for | Distribution | Archival, mastering |
//how_it_works
How It Works
Drop your OGG files
Drag and drop or select OGG or OGA files at any Vorbis bitrate. First use loads FFmpeg WASM (~30MB).
FFmpeg decodes Vorbis
FFmpeg WASM parses the OGG container and decodes the Vorbis stream to raw PCM samples using libvorbis. Everything stays on your device.
FLAC encoding (lossless)
PCM samples are encoded with the native FFmpeg FLAC encoder at compression level 5, using linear prediction and Rice coding for lossless compression.
Download your FLAC files
Your FLACs are ready for archival, DAW workflows, or playback on FLAC-compatible devices and apps.
// under the hood
OGG Vorbis uses overlapping MDCT with psychoacoustic masking for lossy compression. FLAC uses linear prediction (similar to LPC) plus Rice coding for lossless compression of PCM. Our converter uses FFmpeg WASM with libvorbis to decode the Vorbis stream from the OGG container to raw PCM, then re-encodes with the native FLAC encoder at compression level 5 (default, balanced speed/size). The output is bit-perfect to the decoded PCM.
//faq
Frequently Asked Questions
- Why convert OGG to FLAC if both are open formats?
- FLAC is a lossless archival format — once you decode OGG to FLAC, no further encoding loss occurs even if you process the file later. OGG Vorbis is lossy, so every re-encode adds artefacts. FLAC is the right choice when you want a stable master that can be re-exported many times without quality drift.
- Does FLAC restore the original quality?
- No. FLAC cannot recover information lost during the original Vorbis encoding. Vorbis discards inaudible data permanently. Converting to FLAC gives you a perfectly preserved decode of the lossy OGG, but the OGG quality is the ceiling. FLAC is about preventing further loss, not restoring past loss.
- What's the FLAC file size vs OGG?
- FLAC files are typically 3-6× larger than the source OGG, since FLAC stores the full PCM signal losslessly while OGG threw away most of it. A typical 4-minute OGG (~4 MB) becomes a ~20 MB FLAC. This is normal — it's the price of locking in a stable master.
- Will the FLAC play on my devices?
- FLAC is supported natively on Android (4.1+), Windows 10+, modern Linux, VLC, foobar2000, and Hi-Fi streamers. iOS supports FLAC since iOS 11 via Files app and the Apple Music import workflow. For broadest compatibility — including older devices — use OGG to MP3 instead.
- Are my OGG files private?
- Yes. FFmpeg WebAssembly runs entirely in your browser. Your OGG files never leave your device.
//related_converters
Related Converters
Similar conversions you might need.
Convert OGG to MP3
Convert OGG Vorbis audio files to universally supported MP3.
→Convert OGG to WAV
Convert OGG Vorbis audio to uncompressed WAV for DAW editing and professional workflows.
→Convert OGG to AAC
Convert OGG Vorbis audio to AAC format for Apple devices and streaming services.
→Convert MP3 to FLAC
Convert MP3 audio files to FLAC lossless format for archival and DAW workflows.
→Convert WAV to FLAC
Convert uncompressed WAV audio to FLAC lossless compressed format.
→Convert AAC to FLAC
Convert AAC audio to FLAC lossless format for archival.
→