Convert raw AAC audio files to MP3 for maximum device compatibility — free, browser-only.
AAC (Advanced Audio Coding) is the successor to MP3 and is technically the better codec: same quality at a lower bitrate, or better quality at the same bitrate. It's the default for YouTube, Netflix, and Apple Music. The downside is that raw .aac files — ADTS streams used by radio broadcasts, Shoutcast recordings, and some DVR captures — don't play on older hardware that only groks MP3.
Converting AAC to MP3 sacrifices a bit of efficiency for reach. We decode the AAC to PCM and re-encode as MP3 at a high-quality default. Everything stays in your browser; no upload.
AAC (Advanced Audio Coding) is the successor to MP3, offering better quality at the same bitrate. `.aac` files are raw ADTS streams.
MP3 is the most universally compatible lossy audio format — plays on every phone, car stereo, and audio player ever made.
Drag a AAC onto the converter above, or click the box to pick one from your device.
We've preselected MP3 as the output format. Change it from the dropdown if you want a different target.
Click Convert and wait for the progress bar to finish. Download the MP3 when it's ready.
Turn an M4A audio file from iTunes or Apple Music into an MP3 that plays on any device.
Convert OGG Vorbis or Opus audio to MP3 for compatibility with legacy players and older devices.
Shrink a WAV file down to MP3 for easier sharing and streaming — free, private, in your browser.