Free online tool
Convert OPUS to FLAC
Free online OPUS to FLAC converter - runs entirely in your browser. No upload, no account, no file size limit.
Drop OPUS files here
OPUS · and other formats (MP3, WAV, FLAC, AAC, OGG, M4A, OPUS, WMA, AIFF)
Audio sounds damaged or noisy?
Professional restoration by real engineers - noise removal, voice clarity, echo reduction.
Why convert OPUS to FLAC?
- →FLAC is losslessly compressed audio, making it ideal for music archives, audiophile listening, and long-term storage.
- →Your OPUS files are processed entirely in your browser - nothing is uploaded to any server.
- →Batch-convert as many files as you need in one click, then download them individually or all at once.
- →Note: converting from a lossy format (OPUS) to a lossless one (FLAC) will not recover lost data, but it avoids further compression artifacts.
- →FLAC files are typically 40-60% smaller than WAV while preserving the same audio data.
How to convert OPUS to FLAC online
- 1
Upload your OPUS files
Drag and drop or click to select files. You can add multiple OPUS files at once.
- 2
FLAC is pre-selected
The output format is already set to FLAC. Optionally adjust quality settings before converting.
- 3
Click Convert
Hit Convert while the audio engine loads in the background. No server involved.
- 4
Download your FLAC files
Download files one by one or all at once. No registration, no email, no waiting.
Source format
OPUS
modern codec for voice and music.
Best for: VoIP, web streaming, and Discord.
LossyOutput format
FLAC
losslessly compressed audio.
Best for: music archives, audiophile listening, and long-term storage.
LosslessProfessional audio restoration
Audio sounds noisy or unclear?
Converting format does not fix audio quality issues. If your OPUS has noise, hiss, hum, or muffled speech, WefixSound engineers can professionally restore it. Free sample before you pay.
Frequently asked questions
Will I lose quality converting OPUS to FLAC?
FLAC is lossless, so no further quality is lost in the conversion. If your source OPUS is already lossy, converting to FLAC preserves it without additional compression artifacts.
Is the OPUS to FLAC converter free?
Yes - completely free. No account, no registration, no email required. The tool runs in your browser and processes files locally.
Is my file uploaded to a server?
No. The converter runs entirely inside your browser tab. Your OPUS files never leave your device.
Is there a file size limit?
There is no server-side limit. Practical limits depend on your device memory.
Can I convert multiple OPUS files to FLAC at once?
Yes. Drop as many files as you need into the tool and click Convert.