AAC to MP3 Converter

1. Upload your AAC file (up to 50 MB).
2. Choose a bitrate (128, 192, or 320 kbps).
3. Click 'Convert AAC to MP3' — takes 5-20 seconds.
4. Download the MP3.

AAC is technically better than MP3 at the same bitrate, but MP3 is more universally supported. Converting AAC to MP3 makes your audio play on any device or player.

AAC is the default audio format for iTunes, Apple Music, YouTube, and most modern streaming services. It's more efficient than MP3 at the same bitrate. But many older devices — car stereos, MP3 players, some phones — only support MP3. Converting AAC to MP3 makes your audio universal.

The converter decodes the AAC audio and re-encodes it as MP3 using LAME at a high-quality bitrate (192 kbps default). The result plays on any MP3-compatible device. Audio quality is preserved at transparent levels for most listeners.

• Converting iTunes AAC purchases for older MP3 players.
• Making Apple Music downloads playable on car stereos.
• Sharing AAC audio with people who only support MP3.
• Re-encoding for a device with limited AAC support.
• Converting YouTube audio downloads (often AAC) to MP3.
• Standardizing an audio library to MP3.
• Preparing audio for platforms that only accept MP3.

At 192 kbps (default), most listeners can't distinguish MP3 from the original AAC. At 320 kbps, the conversion is essentially transparent. Lower bitrates (128 kbps) are fine for podcasts and voice recordings.

• DRM-protected AAC files (iTunes purchases from before 2009) can't be converted.
• Converting lossy→lossy adds slight generational loss (inaudible at high bitrates).
• Multi-channel AAC is downmixed to stereo.
• Very small files (under 500 KB) may not benefit.
• Audio quality is limited by the source — MP3 can't be better than the AAC.

• Output MP3 plays on every device, player, and OS.
• Works with iTunes, Windows Media Player, VLC, phones, car stereos.
• ID3 tags and album art preserved.
• Standard MP3 — no special software needed.
• Accepted by every audio platform.

• 192 kbps is the sweet spot — transparent for most listeners.
• 320 kbps is best for critical music listening.
• 128 kbps is fine for podcasts and voice.
• Metadata (artist, album, cover art) is preserved.
• Keep the original AAC if you may want to re-convert later.

DRM-protected AAC file fails to convert

Files bought from iTunes before 2009 (with FairPlay DRM) can't be converted. Re-purchase or re-download DRM-free versions.

Audio quality sounds slightly worse

Lossy→lossy conversion adds slight generational loss. Use 320 kbps for best quality.

Metadata is missing

ID3 tags are preserved when the source has them. If the AAC lacked metadata, the MP3 will too.

• Fraunhofer IIS — AAC
• Fraunhofer IIS — MP3