Online audio converter to AAC Add audio/video files Click here to choose files or Drop them here Up to 50 files # Source file Size Status Sample rate: do not change 1000 Hz 8000 Hz 11025 Hz 16000 Hz 22050 Hz 24000 Hz 32000 Hz 44100 Hz 48000 Hz 96000 Hz Channels: do not change mono stereo Normalize Automatically start I consent to collecting, storing and processing my data from this form according to Privacy Policy and Terms of Use. Convert Advanced Audio Coding (AAC) is a proprietary audio file format and encoding algorithm. It differs with less (compared to MP3) lossless of audio files quality when you encode with the same settings. In addition, AAC is a wideband audio coding algorithm. It uses two basic principles of coding to minimize the amount of data required to transmit high quality digital audio. Using this format you get the highest quality sound than MP3, using the algorithms of compression with losses. This format is supported by a large number of manufacturers of modern equipment, particularly portable, so you won't have playback issues.