Privacy First
Uploaded files are automatically and permanently deleted within two hours.
Automatic deletion
AAC to Text
Transcribe AAC audio into clean plain text in minutes.
-
Free: Convert AAC to text at no cost, with no sign-up required.
-
Quality: Accurate AAC transcription stays faithful to the source, with speaker detection and support for common languages.
-
Privacy: Your uploads and transcripts are automatically deleted after 2 hours.
Detect Multiple Speakers
Automatically distinguish who is talking (ideal for meeting notes and interviews)
Enable speaker detection?
Using speaker detection may significantly increase processing time. Do you want to use it for this transcription?
AI transcription
AI AAC to text transcription
Transcribe AAC to text from voice notes, interviews, meetings, or podcasts. Get a clean TXT transcript for free, with no sign-up.
How to use Converter App
1
Upload AAC audio
Add your AAC recording or video with AAC audio from an MP4 or M4A source.
2
Track progress
Follow the status while AI transcription generates your plain text transcript.
3
Download text
Save the finished TXT transcript and use it in notes, edits, or archives.
Key features
Whisper v3 AI
Transcribes AAC recordings with strong accuracy, including accents, fast speech, and moderate background noise.
Speaker detection
Identifies different speakers to make interviews, meetings, and panels easier to review.
100+ languages
Works with common languages including English, Spanish, German, and French.
Long audio ready
Processes large uploads over 1 GB, with automatic deletion after 2 hours.
Experience & privacy
Built for reliable transcription workflows.
Developed by engineers with 10+ years of experience in large-scale infrastructure, data systems, and scientific computing. Designed for real-world audio workflows where privacy, dependable processing, and practical usability matter.
Trusted by Users
Rated 5 stars on Trustpilot for speed, reliability, and ease of use.
User trust
Academic Use
Referenced in published research and used for interview transcription and qualitative data analysis.
Research use
User reviews
Users rely on our AAC to Text converter to transcribe voice memos, podcasts, and audio files.
Read selected Trustpilot reviews from creators and professionals who use Converter App to accurately transcribe their AAC audio files into clear, editable text.
4.8
Based on the 90 reviews
Collected after conversion
Measured on our servers
What to expect when converting AAC to Text
Real numbers from every conversion on this tool since 24 October 2026. Nothing here is estimated: we record how long each job took and how large the files were. File names and contents are never stored.
79 s
Typical processing time
for a 29 MB file (median)
72
Conversions
since 24 October 2026
163 MB
Largest file converted
since 24 October 2026
Expected time by file size
How long conversions take
share of all conversions
- under 1 s0%
- 1–10 s4%
- 10–60 s32%
- 1–5 min53%
- over 5 min11%
Times are server processing only, measured after the upload finished; upload and download are not included. Large files take longer, but the limit is the same for everyone: no account, no queue priority to buy. Updated 2026-11-14
