Choose m4a from your device.
Files stay on your device
M4A to MP3
Convert an M4A recording to MP3 with your chosen bitrate and local processing.
Private browser workspaceInput: M4A → Output: MP3
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Your file never leaves this browser
Processing happens locally using browser APIs and on-device code. Closing this tab clears the working data.
How it works01 02 03
Done in three simple steps
Choose the available options and process the input locally.
Review the result, then download it to your device.
Frequently asked questions
Are AAC and ALAC both supported?+
The M4A container can hold different codecs. The tool checks the codec on your device and rejects sources it cannot decode instead of creating a partial file.
Are my files uploaded?+
No. Processing happens on this device. The tool may download its own code, but source files and output are not sent to a processing server.