M4A to MP4 Converter
Convert M4A audio into an MP4 container.
How to use M4A to MP4
Three quick steps — no sign-up needed
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Step 1
Upload your file
Choose a M4A audio file from your device. Drag and drop works too.
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Step 2
Convert
Run the conversion to produce MP4 audio without installing desktop software.
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Step 3
Download
Save the MP4 file and use it in players, editors, or uploads that expect that format.
About M4A to MP4
M4A to MP4 converts M4A audio to MP4 in the browser so you can fix format mismatches without a desktop suite. Searches for "m4a to mp4", "convert m4a to mp4 online", and "m4a converter" map to this workflow when a site, app, or editor rejects the original container.\n\nUpload the M4A file, start the conversion, and download the MP4 result. The tool is built for everyday swaps - podcasts, voice notes, music clips, and short recordings - where you need a compatible file fast rather than a full DAW project.\n\nUse M4A to MP4 when a platform asks for MP4, when an editor opens MP4 more reliably, or when you are standardising a folder of clips before sharing. Files are processed for the conversion job and are not kept as a permanent library on our servers.
Benefits of M4A to MP4
Frequently asked questions
What does M4A to MP4 do?
It converts an uploaded M4A audio file into MP4 so you can use the clip where that format is required.
Do I need software to convert M4A to MP4?
No. Upload the file in your browser, convert, and download the result.
Will quality change?
Re-encoding can change size and fidelity depending on the codecs involved. Use a lossless target like WAV or FLAC when you need maximum fidelity.
Is there a file size limit?
Yes - the upload limit shown on the tool page applies. Larger files may need a shorter clip or a higher plan limit if available.