AIFF
AIFF Audio
Apple's lossless audio format, the counterpart to WAV. It is the standard master format in Mac music production.
Commonly used for
Mac music production, studio masters
AIFF to M4A Converter
Convert AIFF files to M4A free in your browser — no signup, no install, and the file is never uploaded to a server. M4A opens almost anywhere, so the result works where AIFF did not.
Completely free
Files are never uploaded
No signup required
Drop files or click to select
AIFF → M4A
What changes in this conversion
- M4A opens almost everywhere, so the converted file will work on devices and programs that refused the original AIFF.
How to use
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Add your AIFF file
Drag the AIFF file onto the drop area above, or click it to pick a file from your device. You can add several files at once.
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Confirm M4A as the output
M4A is already selected as the output format on this page. You can pick the bitrate — higher keeps more of the sound, lower makes a smaller file.
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Run the conversion
Press the convert button. Audio decodes and re-encodes in your browser — a normal song finishes in a few seconds.
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Download the M4A file
When it finishes, download the M4A file. Converting multiple files gives you the option to download them together as a ZIP.
About these formats
M4A
M4A Audio
An audio file in an MPEG-4 container, usually compressed with AAC. iPhone voice memos and iTunes purchases use this format.
Commonly used for
iPhone voice memos, Apple ecosystem audio
Frequently asked questions
Is converting AIFF to M4A really free?
Yes. AIFF to M4A conversion is completely free with no signup, no watermark, and no daily limit on the free plan for ordinary use.
Are my AIFF files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so the AIFF file never leaves your device. That is also why it works without an internet connection once the page has loaded.
Does converting AIFF to M4A reduce quality?
M4A uses lossy compression, so some detail is discarded. At high quality settings the difference is usually invisible, and the file becomes far smaller.
Is there a file size limit for AIFF to M4A conversion?
The free plan handles files up to 200MB. Because processing happens on your own device, very large files depend on your computer's memory rather than a server quota.
Convert AIFF files to other formats
Convert other formats to M4A
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