OPUS to FLAC Converter
Convert OPUS files to FLAC in seconds, right in your browser. Drop in one file or a whole folder, pick your quality settings and download - nothing is uploaded to a server.
Drop OPUS files here
MP3, WAV, FLAC, M4A, OGG, OPUS, AAC, AIFF, WMA, AMR, MP4, MOV & more · Processed on your device - nothing is uploaded
How to convert OPUS to FLAC
- Click "Choose files" or drag your OPUS files onto the page.
- Make sure "FLAC" is selected as the output format.
- Optionally click Edit to trim, adjust volume or add effects.
- Click Convert, then Download your FLAC files.
Why convert OPUS to FLAC?
FLAC is lossless, so further editing and re-saving won't reduce quality any more. (It can't restore detail that OPUS compression already removed.)
FLAC is best for hi-fi music collections, archiving CDs and lossless streaming. Supported by Android, iOS 11+, Windows 10+, macOS, most hi-fi players and browsers.
Will I lose quality?
Converting OPUS to FLAC keeps all the quality that is in your OPUS file - nothing more is lost. However, it cannot recover detail removed when the OPUS was originally created, and the FLAC file will be larger.
OPUS vs FLAC
| OPUS | FLAC | |
|---|---|---|
| Full name | Opus Interactive Audio Codec | Free Lossless Audio Codec |
| Type | lossy | lossless |
| Best for | voice notes, WhatsApp/Discord audio, podcasts and streaming at small sizes | hi-fi music collections, archiving CDs and lossless streaming |
| Typical size | ~0.9 MB at 128 kbps per minute | ~5-6 MB at 16-bit / 44.1 kHz per minute |
| Compatibility | All modern browsers, Android, iOS 17+, WhatsApp, Discord, Telegram and VLC. | Supported by Android, iOS 11+, Windows 10+, macOS, most hi-fi players and browsers. |
| Developed by | IETF / Xiph.Org (2012) | Xiph.Org Foundation (2001) |
OPUS to FLAC: questions
How do I convert OPUS to FLAC?
Open this page, add your OPUS file, make sure FLAC is selected as the output format and click Convert. Your FLAC file is ready to download in seconds.
Will converting OPUS to FLAC lose quality?
Converting OPUS to FLAC keeps all the quality that is in your OPUS file - nothing more is lost. However, it cannot recover detail removed when the OPUS was originally created, and the FLAC file will be larger.
Is this OPUS to FLAC converter free and safe?
Yes. It's free with no watermark or sign-up. Files are processed locally in your browser, so your audio is never uploaded or stored on our servers.
Can I convert many OPUS files to FLAC at once?
Yes - add up to 5 files at a time on the free plan (unlimited with Pro), convert them all with one click and download them as a ZIP.
What is the difference between OPUS and FLAC?
OPUS (Opus Interactive Audio Codec) is a compressed (lossy) format, the most efficient modern lossy codec. Opus delivers excellent quality at very low bitrates for both speech and music. FLAC (Free Lossless Audio Codec) is a lossless format: lossless compression that shrinks audio to roughly 50-60% of WAV size without losing a single bit of quality.
Does it work on Mac, Windows, iPhone and Android?
Yes. The OPUS to FLAC converter runs in any modern browser - Chrome, Safari, Edge or Firefox - on desktop and mobile. No software to install.