- Convert Online
- Audio Converters
- AAC to FLAC
Convert AAC to FLAC
Convert AAC to FLAC in your browser. Your audio files are processed on your device and are not uploaded.
5Controls the compression level for FLAC encoding. Higher levels create smaller files at the cost of encoding speed. Level 5 is a balanced choice.
Controls the compression level for FLAC encoding. Higher levels create smaller files at the cost of encoding speed. Level 5 is a balanced choice.
2Sets the number of output audio channels. Stereo is recommended unless you want to reduce file size using mono.
Sets the number of output audio channels. Stereo is recommended unless you want to reduce file size using mono.
44100Defines how many audio samples per second are stored. 44100 Hz is standard and ensures compatibility with most audio players.
Defines how many audio samples per second are stored. 44100 Hz is standard and ensures compatibility with most audio players.
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 AAC 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": "aac-flac",
"multiple": true,
"from": "aac",
"to": "flac",
"note": "Converting from AAC (lossy) to FLAC (lossless) will not improve sound quality. It only increases file size and is typically done for compatibility, editing, or archival workflows.",
"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 create smaller files at the cost of encoding speed. Level 5 is a balanced choice."
},
{
"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 output audio channels. Stereo is recommended unless you want to reduce file size using mono."
},
{
"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": 44100,
"desc": "Defines how many audio samples per second are stored. 44100 Hz is standard and ensures compatibility with most audio players."
}
],
"type": "audio",
"operation": "convert"
}
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