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MP3 to AAC Converter

AAC delivers better audio quality than MP3 at equivalent bitrates, making it the preferred format for Apple devices, iTunes, and modern streaming services. Converting your MP3 files to AAC can improve playback experience on iOS devices and is required for certain Apple ecosystem workflows.

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Converting between lossy formats (MP3→AAC) involves re-encoding, which introduces minimal additional quality loss. For best results, use a high-quality MP3 source (256kbps+).

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How to Convert MP3 to AAC

  1. 1

    Upload your MP3 file.

  2. 2

    Choose AAC as the target format.

  3. 3

    Click Convert and download the AAC file.

MP3 vs AAC — Format Comparison

FeatureMP3AAC
Full NameMPEG Audio Layer IIIAdvanced Audio Coding
TypeAudioAudio
CodecMPEG-1 Audio Layer IIIAAC-LC / HE-AAC / AAC-ELD
LosslessNoNo
Extension.mp3.aac
Best ForMusic distribution and downloadsApple Music and iTunes

MP3 Strengths

  • Universal compatibility across all devices and platforms
  • Small file sizes (typically 3-5 MB per song)
  • Supported by every media player and browser

AAC Strengths

  • Better quality than MP3 at same bitrate
  • Native support on Apple devices and iTunes
  • Default audio codec in MP4 video containers

Frequently Asked Questions

When to Convert MP3 to AAC

  • Optimizing audio for Apple devices and iTunes
  • Converting podcast files to AAC for Apple Podcasts
  • Preparing audio for iOS app development
  • Getting better quality at the same file size

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