Convert M4A to OPUS in your browser. Your audio files are processed on your device and are not uploaded.
1. Add your files
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128k
Sets the target bitrate for Opus encoding. Opus performs well even at lower bitrates like 64k, but 128k is a good balance for general use.
Sets the target bitrate for Opus encoding. Opus performs well even at lower bitrates like 64k, but 128k is a good balance for general use.
2
Sets the number of audio channels. Stereo is recommended for music; mono is more efficient for voice recordings.
Sets the number of audio channels. Stereo is recommended for music; mono is more efficient for voice recordings.
48000
Sets the sample rate for Opus audio. Opus natively uses 48 kHz, but lower rates can be used for speech or lower quality output.
Sets the sample rate for Opus audio. Opus natively uses 48 kHz, but lower rates can be used for speech or lower quality output.
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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 M4A to OPUS 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": "m4a-opus",
"multiple": true,
"from": "m4a",
"to": "opus",
"note": "Opus is optimized for speech and streaming audio. It offers excellent quality at low bitrates, making it ideal for web and mobile use. Converting from M4A to Opus is lossy and may result in slight quality loss.",
"controls": [
{
"type": "dropdown",
"name": "bitrate",
"label": "Audio Bitrate",
"options": [
{
"label": "32 kbps (Low)",
"value": "32k"
},
{
"label": "64 kbps",
"value": "64k"
},
{
"label": "96 kbps",
"value": "96k"
},
{
"label": "128 kbps (Standard)",
"value": "128k"
},
{
"label": "160 kbps",
"value": "160k"
},
{
"label": "192 kbps",
"value": "192k"
}
],
"defaultValue": "128k",
"desc": "Sets the target bitrate for Opus encoding. Opus performs well even at lower bitrates like 64k, but 128k is a good balance for general use."
},
{
"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. Stereo is recommended for music; mono is more efficient for voice recordings."
},
{
"type": "dropdown",
"name": "sample_rate",
"label": "Sample Rate (Hz)",
"options": [
{
"label": "16000 Hz",
"value": 16000
},
{
"label": "24000 Hz",
"value": 24000
},
{
"label": "48000 Hz (Default)",
"value": 48000
}
],
"defaultValue": 48000,
"desc": "Sets the sample rate for Opus audio. Opus natively uses 48 kHz, but lower rates can be used for speech or lower quality output."
}
],
"type": "audio",
"operation": "convert"
}
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