Convert MP3 to M4A.
Turn MP3 audio into M4A (AAC) — the format Apple Music, iPhone and the Apple ecosystem prefer, with better quality at smaller file sizes.
How it works
- 01
Add your MP3
Drop one or many files, or click to browse. Private by default.
- 02
Convert with a local engine
MP3 becomes M4A/AAC using a best-in-class open engine — no paid API in the loop.
- 03
Download or transcribe
Grab your M4A (or a zip of many), or send it to TranscriptAI for a transcript and notes.
AAC: better quality per byte than MP3
Made for Apple Music, iPhone and iTunes
Private uploads, auto-deleted after 1 hour
Batch convert many at once, download as a zip
No watermark, no signup to try
Direct handoff to TranscriptAI
Your file is ready. Want to do more with it?
Open this file in TranscriptAI to generate a transcript, summary, structured notes, flashcards, quiz questions or action items — automatically.
Common questions
Is it free?+
Yes — convert MP3 to M4A free, with no signup.
Why M4A instead of MP3?+
M4A uses AAC, which generally sounds better than MP3 at the same file size and is the native choice across Apple Music, iTunes and iPhone.
Is my file private?+
Uploads go to a private bucket, are converted, and auto-delete after 1 hour.
Related workflows