Convert FLAC to OPUS
FLAC is great for archiving CDs and hi-res music without quality loss, but OPUS is the better choice for voice messages, calls and streaming at low bitrates. Convert FLAC to OPUS in seconds, right in your browser.
- No upload — 100% private
- Fast, lossless when possible
- Free & unlimited
- Works on iPhone & Android
Keep this tab open — the conversion runs on your device, nothing is uploaded.
Add more files above to keep converting.
How to convert FLAC to OPUS
- 1
Tap Choose files and select one or more FLAC files (or drag them in).
- 2
Check that OPUS is selected. Use Advanced options for bitrate, channels or trimming.
- 3
Press Convert. Everything happens on your device — no upload, no waiting in a queue.
- 4
Your OPUS downloads automatically. Converting several files? Grab them all as a ZIP.
FLAC vs OPUS
OPUS uses lossy compression, which makes the file much smaller than FLAC. Choose High quality and the difference is inaudible for most listeners.
| FLAC | OPUS | |
|---|---|---|
| Full name | Free Lossless Audio Codec | Opus Audio |
| Type | Audio | Audio |
| Compression | Lossless | Lossy |
| Developed by | Xiph.Org | IETF / Xiph.Org |
| Introduced | 2001 | 2012 |
| Plays on iPhone | ✓ Yes | ◐ Partly / with an app |
| Plays on Android | ✓ Yes | ✓ Yes |
| Plays on Windows | ✓ Yes | ✓ Yes |
| Plays on Mac | ✓ Yes | ✓ Yes |
About FLAC and OPUS
FLAC: FLAC is an open lossless format that shrinks audio to 50–60% of WAV size without losing any quality. It is the favourite format of audiophiles and hi-res music stores.
OPUS: Opus is a modern, highly efficient codec used by WhatsApp voice notes, Discord, Zoom and WebRTC calls. It sounds excellent even at very low bitrates.
Frequently asked questions
How do I convert FLAC to OPUS on my phone?
Will converting FLAC to OPUS reduce quality?
Is this FLAC to OPUS converter free?
Are my files uploaded to a server?
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