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Convert AAC to MP3

AAC · MP3 · M4A · WAV · FLAC · OGG · OGA · WebM · OPUS · MP4 · MOV · MKV

Converting happens in your browser, so your file never leaves your device. Transcribing uploads the audio to SeaMeet.

Choose an AAC file from a phone recorder or an app and save it as an MP3 that older players accept.

How it works

  1. Choose the AAC file, for example from a call or voice recorder.
  2. Pick the quality and select Convert & download.
  3. Save the MP3, or transcribe the recording.

Raw AAC files from recorders and apps

Some files end in .aac with nothing around them: no M4A container, just the raw sound. Many Android voice and call recorder apps save that way, as do some internet radio recording apps. The sound is fine, but the bare format trips up a lot of software.

Older MP3 players, many car stereos, some smart TVs and a surprising number of websites that ask for an audio file won't take a raw AAC, even though they would play the same format inside an M4A. MP3 is the safe choice for all of them. Choose the file here and your browser converts it on your phone or computer, without uploading it.

Recordings from phone apps are often calls, lectures or notes to yourself. When the words matter more than the sound, Transcribe this file sends the audio to SeaMeet, which returns a transcript with speaker labels and a summary.

Questions

Is my AAC file uploaded?

No. The AAC is decoded and saved as MP3 by your browser, on your own phone or computer. Nothing leaves it unless you pick Transcribe this file, which uploads the audio to SeaMeet.

Is there a limit on AAC size or length?

Not for converting. Because there is no upload, only the free storage for the new MP3 matters. Transcription is separate and accepts files of up to 512 MB and 5 hours.

What is the difference between AAC and M4A?

They usually hold the same kind of sound. An .aac file is the sound on its own, while an .m4a wraps that sound in a container that can also carry the title, artwork and length. Players that open M4A don't always open a bare AAC.

Why doesn't my car play AAC?

Many car stereos and older players were built to read MP3 and little else, so they skip AAC files or show them as unsupported. Converting to MP3 at the recommended quality gives you a file they recognize.