MP3 to AAC

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MP3 → AAC: raw ADTS audio

Upload a valid MP3 audio file.
Convert and download the AAC file.
Check playback in the target application; choose an M4A converter if it requires an MPEG-4 container.

MP3 → AAC: raw ADTS audio

The first audio track is encoded as AAC at 192 kbit/s in ADTS format. This is a raw .aac stream, not an M4A container; not every player accepts it. Re-encoding does not restore MP3 quality.

Upload a valid MP3 audio file.
Convert and download the AAC file.
Check playback in the target application; choose an M4A converter if it requires an MPEG-4 container.

Choose File Drag & drop files here … (or click to select files) or drop an archive with files Upload file

MP3 to AAC

Upload an MP3 audio file and save it as AAC for players, messengers, editing, publishing or archiving.

MP3 is the most common music (sound) file format. This format was developed by Fraunhofer IIS and Thomson. This format for storing and transmitting music (sound) files in digital form uses signal compression technology. That is why, unlike the previously widespread WAV format, MP3 files (full name - MPEG Audio Layer-3) are much smaller in size, and their sound quality is much higher. The MP3 format was one of the first and most successful sound compression methods. One of the important characteristics of this process is the degree of compression, that is, how much data is transferred per unit of time. Standard MP3 encoding is from 64 to 320 kb / s.

AAC is a sound encoded file format developed by Fraunhofer IIS, AT&T, Dolby and Sony. Its name stands for Advanced Audio Coding. The AAC format is an industry standard and was created as an improved alternative to the most common MP3 audio file format. AAC files do have slightly improved features compared to MP3s. Let's say this format provides the opportunity for improved processing of frequencies above 16 kHz. At the same time, the sound quality of AAC files is closer to the original sound source.