Tools / File Converter / OPUS to FLAC Converter

OPUS to FLAC Converter

Convert OPUS files to FLAC. Free, without uploading.

This tool converts OPUS files to FLAC. OPUS is a modern format that sounds great even at low bitrates. WhatsApp and Telegram voice messages use it.

FLAC is lossless compressed audio: about half the size of WAV with no quality loss. FLAC is lossless, so the audio keeps the quality it has in the OPUS file.

Conversion runs on your device; your file is never sent to a server. The components download once on first use, and later conversions start right away.

How to use

1. Choose the OPUS file, drag it in, or paste its link.
2. Choose the audio quality; optionally enter a start and end time.
3. Press "Convert" and download the FLAC file.

Frequently asked questions

Will audio quality drop when converting to FLAC?

No. FLAC is lossless.

Is there a file size limit?

No fixed limit; your device’s memory decides. Computers usually handle files up to 1–2 GB.

Is my file uploaded?

No. Your OPUS file is converted to FLAC inside your browser.