MP3 to M4A Converter

Free, fast, and secure. Convert MP3 files to M4A directly in your browser — no uploads, no limits.

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Works Offline

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About MP3 to M4A Conversion

Convert between audio formats for optimal compatibility and quality. Match the perfect balance of file size and sound quality for your specific needs—from lossless archival to compressed streaming.

How to Convert MP3 to M4A

Converting files has never been easier or more secure. MixConvert uses advanced browser-based technology to process your files instantly without uploading them to a remote server. Follow these simple steps to get started:

Select Your Files: Select your MP3 files by clicking the upload zone or dragging them directly onto the page.
Choose Output Format: Confirm M4A is set as the destination format in the format selector.
Convert Instantly: Click the convert button to begin. Your MP3 files will be processed locally in seconds.
Download: Save your new M4A files directly to your device. Batch download available for multiple files.

MP3 to M4A FAQ

Can I convert MP3 to M4A on mobile devices?

Absolutely! Our converter is fully responsive and works on any smartphone or tablet. Just visit this page, upload your MP3 files, and convert them to M4A format—no app required.

Is my data secure when converting MP3 files?

100% secure. Unlike cloud converters, MixConvert processes your MP3 files entirely on your device using WebAssembly. Your data stays on your computer—we never see it.

How large can my MP3 files be?

We don't impose file size restrictions. Your browser handles the conversion, so the limit depends on your device's memory. Typical computers can process very large MP3 files without issues.

What's the conversion speed for MP3 files?

Conversion is nearly instant for typical MP3 files. Your device's processor handles the work, so faster devices complete M4A conversion more quickly.

Does MixConvert support converting multiple MP3 files at once?

Batch conversion is fully supported. Upload as many MP3 files as you need and convert them all to M4A in one go. A ZIP download option makes it easy to save everything.

How do I ensure the best M4A quality?

Our converter automatically selects high-quality encoding parameters. For M4A specifically, we optimize settings based on the format's strengths to give you excellent audio fidelity.