Audio tool

Convert Opus Files to FLAC on Your Device

Convert Opus to FLAC in your browser for lossless distribution. The source remains on your device throughout local processing.

Route OPUS → FLAC

or drop here · up to 500 MB

Max 50 MB per file

Preview (optional)

When your browser supports it, your audio plays here. You can still convert your file if preview does not load.

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Use upload name

Adapt low-latency delivery to a workflow built for lossless distribution
Supply FLAC when an editor, player, or delivery form will not accept Opus
Create a FLAC copy from Opus for music archives, mastering, and lossless playback

Processing demand varies with the codecs found in the source during this Opus-to-FLAC job.
A short Opus sample is quicker to process than a full-length recording.
Confirm the FLAC output meets the receiving system’s technical limits.

FLAC serves music archives, mastering, and lossless playback, whereas Opus commonly serves voice chat, streaming, and efficient web audio.
For Opus-to-FLAC delivery, plan for larger files than lossy formats.
After leaving Opus, the receiving app must support the streams encoded inside FLAC, not only its extension.

Opus to FLAC taking too long? Process a shorter section to determine whether file size is the bottleneck.
FLAC converted from Opus not opening? Test a compatible player and inspect the output streams.
Use the receiving app’s documented FLAC profile when generic playback succeeds but import fails.

When does Opus to FLAC conversion make sense?

It is useful when Opus media created for low-latency delivery must enter a FLAC system designed for lossless distribution.

Where is the Opus source processed?

The browser prepares FLAC from Opus on this device instead of sending the source to a remote conversion server.

How can I approve FLAC converted from Opus?

Test the FLAC file in the receiving app and compare duration, channels and loudness with the Opus source.

Quick use cases