Convert OPUS to FLAC

Transform your modern open-source codec for voice and music into FLAC format. Free, private, and browser-based.

How it works

  1. Upload OPUS Files — Drag and drop your OPUS files into the converter, or click to browse. Common sources: discord, whatsapp calls.
  2. Convert to FLAC — The converter processes your files to FLAC format entirely in your browser. No files are uploaded to any server — your privacy is guaranteed.
  3. Download Results — Download your converted FLAC files instantly. For multiple files, download individually or as a ZIP archive.

Why convert OPUS to FLAC

  • Convert to lossless FLAC format to prevent further quality degradation during editing
  • Leverage FLAC advantages: lossless quality — bit-for-bit identical to original
  • Overcome OPUS limitations: less device support than mp3
  • Upload to websites and platforms that require or prefer FLAC format

FAQ

Is OPUS to FLAC conversion free?
Yes, Fileza.io converts OPUS to FLAC completely free with no limits on file size or number of conversions. No hidden fees, no watermarks, and no account required.

Will I lose quality converting OPUS to FLAC?
No quality is lost. FLAC uses lossless compression, preserving all original data from your OPUS file.

Is it safe to convert OPUS to FLAC online?
Absolutely. Unlike most online converters, Fileza.io processes your files entirely in your browser using WebAssembly. Your OPUS files are never uploaded to any server — the conversion runs on your own device, keeping your files 100% private.

Can I convert multiple OPUS files to FLAC at once?
Yes, Fileza.io supports batch conversion. Drag and drop multiple OPUS files at once and they will all be converted to FLAC simultaneously. Download them individually or as a ZIP archive.

Does OPUS to FLAC conversion work on mobile?
Yes, the converter works on any device with a modern web browser — iPhones, iPads, Android phones, and tablets. No app installation required.

Will the converted FLAC files be smaller or larger than OPUS?
File sizes depend on content and quality settings. OPUS files are typically very small (best at low bitrates), while FLAC files are medium (50-70% of wav).

How long does OPUS to FLAC conversion take?
Most conversions complete in seconds. The exact time depends on file size and your device performance. Since processing happens locally in your browser, faster devices convert more quickly. Longer audio files may take a few extra seconds.