High Quality MP3 to M4A
Get the highest quality M4A from your MP3 files. AudioUtils uses optimized encoder settings tuned for fidelity, not just speed.
Drop your MP3 file here or click to browse
MP3 (.mp3) · Max 20 MB
The converter defaults to the highest practical bitrate for M4A. For lossy output, that means 320kbps or VBR quality 0. Transparent quality for virtually all listeners.
Garbage in, garbage out. The output quality depends on your source. A 128kbps MP3 file won't sound better in M4A. Start with the best source available.
AudioUtils processes everything locally using WebAssembly. The encoder runs at near-native speed. A 10-minute file converts in seconds with maximum quality settings.
Frequently Asked Questions
Is M4A better than MP3?
At the same bitrate, M4A (AAC) sounds noticeably better than MP3. AAC is a newer, more efficient codec.
Will M4A play on Android?
Yes. Android has supported M4A/AAC natively since early versions. It's not just an Apple format.
What's the difference between M4A and AAC?
AAC is the codec. M4A is the container (file format). M4A files contain AAC-encoded audio, similar to how MP4 contains video.
Should I convert my whole library to M4A?
Only if you primarily use Apple devices and want marginally better quality. Converting between lossy formats always involves some quality loss, so it's best to convert from lossless sources when possible.
About MP3
The most widely used audio format. Great compatibility, small file size. Ideal for music, podcasts, and general use.
About M4A
Apple's preferred audio format. Better quality than MP3 at same bitrate. Default for iTunes and Apple devices.