FLAC to Opus
Converts FLAC files to Opus format — high-fidelity music archives and audiophile listening where quality matters more than file size to voice-over-IP, real-time communication, and streaming at very low bitrates with excellent quality. All conversion happens locally in your browser with no file size limits.
Runs on FFmpeg
How to Use the FLAC to Opus
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See allOpus to FLAC
Convert OPUS audio files to FLAC format directly in your browser. Audio never leaves your device — conversion and editing run locally in your browser with FFmpeg WASM. Private and free. for archive uniformity.
Opus to MP3
Convert OPUS audio files to MP3 format directly in your browser. Audio never leaves your device — conversion and editing run locally in your browser with FFmpeg WASM. Private and free. from VoIP and streaming sources.
AAC to FLAC
Convert AAC audio files to FLAC format directly in your browser. Audio never leaves your device — conversion and editing run locally in your browser with FFmpeg WASM. Private and free.
Video to GIF
Convert MP4/WebM to GIF animations. Videos up to 250MB. Videos never leave your device — compression and conversion run locally in your browser with FFmpeg WASM.
JPG to PDF
Convert JPG images to PDF format in your browser. Documents stay on your device — editing and conversion run locally in your browser.
Frequently Asked Questions
Why convert FLAC to Opus?
FLAC (Free Lossless Audio Codec) uses losslessly compressed encoding and is best for high-fidelity music archives and audiophile listening where quality matters more than file size. Opus (Opus Interactive Audio Codec) uses lossy compressed encoding and excels at voice-over-IP, real-time communication, and streaming at very low bitrates with excellent quality. Converting between them lets you take advantage of each format's strengths — for example, using a compressed format for sharing and a lossless format for editing. All conversion happens locally in your browser with no file size limits.
Why convert lossless FLAC to lossy Opus?
Opus files are 80-90% smaller than FLAC while sounding nearly identical at normal listening volumes. This is ideal for portable devices, streaming, or reducing storage usage without noticeable quality loss.
What bitrate should I use for Opus?
128kbps Opus sounds comparable to 192kbps MP3. For transparent quality, use 192-256kbps. At 64kbps Opus still sounds better than most other codecs at the same bitrate.
Will Opus play on my devices?
Opus is supported in Chrome, Firefox, Edge, and Android. It is not natively supported in Safari (macOS Sonoma and later have partial support) or older iOS versions. Check your target device before converting.
Does the conversion preserve track metadata?
Basic metadata like artist name, album, and track title transfers from FLAC to Opus. FLAC-specific tags are mapped to equivalent Opus fields during conversion.
Can I convert back from Opus to FLAC?
You can, but it is pointless. Opus discards audio data during compression. Converting Opus to FLAC creates a lossless file containing already-degraded audio — the quality does not improve.
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Last updated October 2026