MP3 to M4A Converter
Convert MP3 audio to M4A (AAC) — efficient, Apple-friendly files for iPhone, iPad, and CarPlay. Free, in your browser, no signup.
Drag & drop your MP3 file here, or browse
Want your MP3 in Apple's format? This free converter turns .mp3 audio into an M4A (AAC) file in seconds — no software or signup. Files up to 30MB are converted directly and nothing is stored after your download.
How to Convert MP3 to M4A
1. Upload your MP3 file
Drag a file onto the box above, or click to browse.
2. Choose a bitrate
M4A is already selected as the output. Pick a bitrate for the AAC audio inside — 320 kbps for best quality.
3. Convert & download
Click Convert & Download. Your .m4a file downloads automatically, ready for the Apple Music app.
A Note on Lossy-to-Lossy
MP3 and M4A (AAC) are both lossy, so converting between them re-encodes already-compressed audio and can add a little loss. It won't improve the MP3 — it just repackages it in Apple's more efficient, native format, handy for iPhone, iPad, Mac, AirPods, and CarPlay. Convert from a high-bitrate MP3 and pick 320 kbps. See MP3 vs M4A. Need the reverse? Use M4A to MP3.
Frequently Asked Questions
How do I convert MP3 to M4A?
Upload your .mp3 file, keep M4A selected and pick a bitrate, then click Convert & Download. The .m4a file is created and downloaded automatically.
Why convert MP3 to M4A?
M4A (AAC) is the native, efficient format across Apple devices — iPhone, iPad, Mac, AirPods, and CarPlay — with full tag and artwork support.
Does converting MP3 to M4A improve quality?
No. Both are lossy, so re-encoding can't add quality the MP3 already lost — it just repackages it. Choose 320kbps to keep it transparent.
Is the MP3 to M4A converter free?
Yes — it's completely free, with no account, no watermarks, and no limit on how many files you convert.