Convert OPUS to FLAC in your browser. Your audio files are processed on your device and are not uploaded.
1. Add your files
or drop your OPUS files here
Up to 20 MB per file. You can select multiple files.
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5
Controls the compression level for FLAC encoding. Higher levels produce smaller files but require more CPU. Level 5 is generally recommended for balance.
Controls the compression level for FLAC encoding. Higher levels produce smaller files but require more CPU. Level 5 is generally recommended for balance.
2
Sets the number of audio channels. Use stereo for music or podcasts, mono for smaller size or voice recordings.
Sets the number of audio channels. Use stereo for music or podcasts, mono for smaller size or voice recordings.
48000
Defines how many samples per second are stored. 48000 Hz is the native sample rate for most Opus files and preserves quality.
Defines how many samples per second are stored. 48000 Hz is the native sample rate for most Opus files and preserves quality.
Ready to convert
4. Download converted files
Private browser conversion: Your files stay on your device. Large files may take longer, and some formats depend on browser codec support.
How to use this OPUS to FLAC Converter?
Choose one or more files or drop them into the input area.
Adjust the available settings, then click Convert. Processing stays in this browser; nothing is uploaded.
Download each result or download a ZIP for multiple files. Results disappear when you leave this page.
{
"convert": "opus-flac",
"multiple": true,
"from": "opus",
"to": "flac",
"note": "Converting from Opus (a lossy, highly compressed format) to FLAC (lossless) will not improve sound quality. This conversion is useful mainly for compatibility, editing, or archival purposes where lossless formats are required.",
"controls": [
{
"type": "dropdown",
"name": "compression_level",
"label": "FLAC Compression Level",
"options": [
{
"label": "Fastest (Level 0)",
"value": 0
},
{
"label": "Level 2",
"value": 2
},
{
"label": "Level 5 (Default)",
"value": 5
},
{
"label": "Level 8 (Maximum)",
"value": 8
}
],
"defaultValue": 5,
"desc": "Controls the compression level for FLAC encoding. Higher levels produce smaller files but require more CPU. Level 5 is generally recommended for balance."
},
{
"type": "dropdown",
"name": "channels",
"label": "Audio Channels",
"options": [
{
"label": "Mono (1 channel)",
"value": 1
},
{
"label": "Stereo (2 channels)",
"value": 2
}
],
"defaultValue": 2,
"desc": "Sets the number of audio channels. Use stereo for music or podcasts, mono for smaller size or voice recordings."
},
{
"type": "dropdown",
"name": "sample_rate",
"label": "Sample Rate (Hz)",
"options": [
{
"label": "22050 Hz",
"value": 22050
},
{
"label": "44100 Hz (CD Quality)",
"value": 44100
},
{
"label": "48000 Hz",
"value": 48000
},
{
"label": "96000 Hz",
"value": 96000
}
],
"defaultValue": 48000,
"desc": "Defines how many samples per second are stored. 48000 Hz is the native sample rate for most Opus files and preserves quality."
}
],
"type": "audio",
"operation": "convert"
}
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