Convert MP3 to AAC in your browser. Your audio files are processed on your device and are not uploaded.
1. Add your files
or drop your MP3 files here
Up to 20 MB per file. You can select multiple files.
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128k
Sets the output bitrate for the AAC file. Higher bitrates improve audio quality at the cost of larger file sizes. 128 kbps is the recommended standard.
Sets the output bitrate for the AAC file. Higher bitrates improve audio quality at the cost of larger file sizes. 128 kbps is the recommended standard.
2
Specifies the number of audio channels. Use stereo for music and richer audio; mono is suitable for voice and smaller size.
Specifies the number of audio channels. Use stereo for music and richer audio; mono is suitable for voice and smaller size.
44100
Controls the sampling frequency. 44100 Hz is commonly used for music; 48000 Hz is widely used for AAC in streaming.
Controls the sampling frequency. 44100 Hz is commonly used for music; 48000 Hz is widely used for AAC in streaming.
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 MP3 to AAC 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": "mp3-aac",
"multiple": true,
"from": "mp3",
"to": "aac",
"controls": [
{
"type": "dropdown",
"name": "bitrate",
"label": "Audio Bitrate",
"options": [
{
"label": "64 kbps",
"value": "64k"
},
{
"label": "96 kbps",
"value": "96k"
},
{
"label": "128 kbps (Standard)",
"value": "128k"
},
{
"label": "192 kbps",
"value": "192k"
},
{
"label": "256 kbps",
"value": "256k"
},
{
"label": "320 kbps (High)",
"value": "320k"
}
],
"defaultValue": "128k",
"desc": "Sets the output bitrate for the AAC file. Higher bitrates improve audio quality at the cost of larger file sizes. 128 kbps is the recommended standard."
},
{
"type": "dropdown",
"name": "channels",
"label": "Audio Channels",
"options": [
{
"label": "Mono (1 channel)",
"value": 1
},
{
"label": "Stereo (2 channels)",
"value": 2
}
],
"defaultValue": 2,
"desc": "Specifies the number of audio channels. Use stereo for music and richer audio; mono is suitable for voice and smaller size."
},
{
"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 (Standard for AAC)",
"value": 48000
}
],
"defaultValue": 44100,
"desc": "Controls the sampling frequency. 44100 Hz is commonly used for music; 48000 Hz is widely used for AAC in streaming."
}
],
"type": "audio",
"operation": "convert"
}
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