Convert MP3 files to Apple's M4A (AAC) format for better quality at comparable sizes.
or click to browse from your device
Upgrade your audio files to the modern AAC standard used by Apple and streaming services.
Drag and drop your MP3 files into the browser. We support bulk uploading.
Choose 256kbps for iTunes Match quality, or lower for saving space.
Get your new .m4a files instantly. They play on almost all modern devices.
A 192kbps M4A usually sounds better than a 256kbps MP3. You can often save space without losing any perceived quality by switching formats.
M4A (using the AAC codec) is the successor to MP3. Designed by the same people, it fixes many of the mathematical artifacts that made MP3s sound "sizzly."
Our converter uses the advanced Fraunhofer FDK AAC encoding engine. This allows us to produce audio files that sound virtually indistinguishable from the original source at much lower bitrates than MP3.
This is the same technology used by Apple Music and YouTube. By converting to M4A, you future-proof your library with the industry standard for high-efficiency audio.
M4A delivers better quality per megabyte than MP3.
Native format for iPhone, iPad, and Mac.
Supports up to 256kbps+ VBR
MP3 is a technology from the early 90s. While revolutionary, it has flaws in how it handles high frequencies and transient sounds (like drums).
M4A (Advanced Audio Coding) was designed to be the successor. It provides substantial improvements in coding efficiency. This means you get:
Advanced Audio Coding. The actual compression method used inside .m4a files.
The file extension used for AAC audio files. Popularized by Apple.
The amount of data per second. 256kbps AAC is generally considered 'transparent' (indistinguishable from CD).
Both MP3 and AAC are lossy, meaning they discard some data. AAC is just smarter about what it discards.
No, converting one lossy format (MP3) to another (AAC) cannot restore lost data. However, M4A is a more efficient container for storage.
For music, use 256kbps or 192kbps. For voice/podcasts, 128kbps is usually plenty.
Your data is handled with 256-bit encryption and deleted automatically.
Privacy Guaranteed"Needed to convert some old songs for my iPhone. This worked perfectly and the tags were kept!"
"M4A is so much better for my podcast uploads. Same quality, smaller file. Thanks!"
Explore RiseConvert Workspace
View All Tools