FLAC to OPUS Converter
Convert FLAC files to OPUS 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 FLAC 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 FLAC to OPUS
- Click "Choose files" or drag your FLAC files onto the page.
- Make sure "OPUS" is selected as the output format (128 kbps is a good default).
- Optionally click Edit to trim, adjust volume or add effects.
- Click Convert, then Download your OPUS files.
Why convert FLAC to OPUS?
OPUS files are typically 5-10x smaller than FLAC, making them ideal for phones, sharing and streaming.
OPUS is best for voice notes, WhatsApp/Discord audio, podcasts and streaming at small sizes. All modern browsers, Android, iOS 17+, WhatsApp, Discord, Telegram and VLC.
Will I lose quality?
OPUS is a lossy format, so some inaudible detail is removed to save space. At 128 kbps or higher most listeners cannot tell the difference from the original FLAC.
FLAC vs OPUS
| FLAC | OPUS | |
|---|---|---|
| Full name | Free Lossless Audio Codec | Opus Interactive Audio Codec |
| Type | lossless | lossy |
| Best for | hi-fi music collections, archiving CDs and lossless streaming | voice notes, WhatsApp/Discord audio, podcasts and streaming at small sizes |
| Typical size | ~5-6 MB at 16-bit / 44.1 kHz per minute | ~0.9 MB at 128 kbps per minute |
| Compatibility | Supported by Android, iOS 11+, Windows 10+, macOS, most hi-fi players and browsers. | All modern browsers, Android, iOS 17+, WhatsApp, Discord, Telegram and VLC. |
| Developed by | Xiph.Org Foundation (2001) | IETF / Xiph.Org (2012) |
FLAC to OPUS: questions
How do I convert FLAC to OPUS?
Open this page, add your FLAC file, make sure OPUS is selected as the output format and click Convert. Your OPUS file is ready to download in seconds.
Will converting FLAC to OPUS lose quality?
OPUS is a lossy format, so some inaudible detail is removed to save space. At 128 kbps or higher most listeners cannot tell the difference from the original FLAC.
Is this FLAC to OPUS 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 FLAC files to OPUS 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 FLAC and OPUS?
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. 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.
Does it work on Mac, Windows, iPhone and Android?
Yes. The FLAC to OPUS converter runs in any modern browser - Chrome, Safari, Edge or Firefox - on desktop and mobile. No software to install.