Convert MP3 to M4A
Convert MP3 to M4A online for free. Simply drop your MP3 files below to convert them to M4A in seconds.
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Add files
Drop files anywhere on the page or paste them with Ctrl+V / ⌘+V
How to convert MP3 to M4A?
Add MP3 files
Drag and drop files onto the page or click the upload area. You can add several files at once.
Choose M4A and settings
Pick the target format and, if needed, adjust quality, size and other options.
Download the result
Conversion runs right in your browser. Download files one by one or all at once as a ZIP archive.
Converting MP3 to M4A: what to know
MP3 is converted to M4A when a program or device that works with AAC requires it, for example the Apple Music library or a video editor.
Both formats are lossy, so converting from MP3 won't improve quality. Choose a bitrate no lower than the original MP3's to avoid losing more. For an iPhone ringtone, the M4R format is more convenient.
MP3 or M4A: which to choose?
MP3 (MPEG-1 Audio Layer III)
MP3 is the most universal audio format: compact files that play anywhere.
Best for music, podcasts and audiobooks on any device.
M4A (MPEG-4 Audio)
M4A is an MPEG-4 audio file, usually AAC - the format of Apple Music, iTunes and iPhone voice memos.
Best for music and voice recordings in the Apple ecosystem.
What happens when converting MP3 to M4A
M4A compresses with loss: choose the bitrate - at 192–320 kbps it sounds close to the original.
Trim the fragment, convert stereo to mono or change the sample rate.
MP3 files up to 512 MB are supported; the actual limit also depends on the free memory of your device.
MP3 and M4A compared
Convert MP3 to other formats
Convert other formats to M4A
What else you can do with MP3
Frequently asked questions
How do I convert MP3 to M4A?
Add MP3 files above - M4A is already selected as the target format. Adjust the settings if needed, start the conversion and download the M4A files.
Can I change the M4A quality?
Yes. Set the quality from 1 to 100 in the file settings: the lower the value, the smaller the file.