Free tool · Transcribe
AAC to Text Converter
Turn an AAC recording into an accurate, editable transcript.
Drop your AAC file here
or click to choose a file
AAC — up to 200MB, 90 min
How it works
- 1
Upload your AAC file
Up to 200MB and 90 minutes long.
- 2
Wait a few seconds
The audio is sent off for transcription and processed in memory only.
- 3
Copy or download
The transcript appears as editable text — copy it or download a .txt file.
Why use it
Handles a modern, efficient codec
AAC's better compression doesn't cost anything in transcription accuracy.
No software to install
Runs entirely in the browser tab you're already in.
Nothing is kept afterward
Your file is discarded the moment the transcript comes back.
Who it's for
- Android voice recorder exports — Several Android recorder apps save directly as .aac.
- Streamed or downloaded audio — AAC is a common default for streamed and downloaded audio.
- Editing software exports — Bare .aac files exported from audio editing tools.
Example
An Android voice-recorder clip
Input
“meeting moved to 3pm, same room”
Output
Meeting moved to 3pm, same room.
Frequently asked questions
How is AAC different from MP3?
AAC is a newer codec than MP3 that generally sounds better at the same bitrate — it's why Apple, YouTube, and many Android recorder apps use it as a default. For transcription accuracy, the two perform about the same.
Does this only work with AAC files?
No — it also accepts MP3, WAV, M4A, OGG, WEBM, and FLAC. This page is tuned for bare .aac files specifically, as opposed to M4A (which is AAC audio in an Apple-style container).
Is it free?
Yes. It's free with no account required, limited to a fair-use number of transcriptions per hour to keep it available for everyone.
What's the file size and length limit?
Up to 200MB and 90 minutes per file on the free tier.
Is my file stored on your servers?
No. It's processed in memory during transcription and discarded immediately after — never written to disk or a database.
Related tools
Read more: How to turn an audio recording into text
Need this outside the browser?
VoxaType turns your voice into polished text everywhere you type — messages, emails, notes, and code — no upload, no file size limit, no waiting for a page to process.