Free M4A to AU Converter

Convert M4A to AU for free and online, easily convert your audio file without needing to download any software or pay any fees

Or drop it here

Maximum file size 200 MB

M4A

MPEG-4 Audio Layer

MPEG-4 Audio Layer is an audio file format developed by Apple and is used to store audio data. It is based on the QuickTime File Format (QTFF) and is the successor to the MP3 format.

Main usage

M4A files are commonly used to store audio data on Apple devices, such as iPhones, iPads, and iPods. They are also used to store audio data on some streaming services, such as Spotify and Apple Music.

Main features

High-quality audio
Small file size
Compatible with Apple devices

AU

Audio Interchange File Format

Audio Interchange File Format (AIFF) is an audio file format developed by Apple Inc. for storing sound data. It is a container format that stores audio data as well as metadata.

Main usage

AIFF is commonly used for storing uncompressed audio data on Mac OS and iOS devices. It is also used for storing audio data in professional audio production and editing applications.

Main features

High-quality audio
Supports up to 32-bit audio
Supports up to 8 channels of audio