MP3 to AAC converter
Convert MP3 files to AAC with encrypted uploads and automatic deletion. Efficient lossy codec used by streaming and Apple devices.
Drop a MP3 file, or click to browse
Converts to AAC · runs live, right now
How it works
Drop your file
Drag a MP3 file in, or click to browse. No account needed to try it.
We convert it
Encrypted upload, converted to AAC in our ffmpeg pipeline.
Download the result
Grab your AAC file immediately, or find it later in your dashboard.
Why convert MP3 to AAC?
Both MP3 and AAC use lossy compression, so the conversion mainly changes compatibility, not quality. The main reason to convert MP3 to AAC is compatibility: AAC plays on virtually any device or app without an extra codec, while MP3 doesn't always. If you're sharing a file with someone else, sending it to a tool that expects a specific format, or archiving it for the long term, AAC is usually the safer target.
Format comparison
| MP3 | AAC | |
|---|---|---|
| Extension | .mp3 | .aac |
| MIME type | audio/mpeg | audio/aac |
| Compression | lossy compression | lossy compression |
| Category | audio | audio |
Your file, handled carefully
Uploads are encrypted in transit and at rest, processed in an isolated job, and deleted on the schedule you choose — as fast as immediately. We don't index, search, or share files between accounts. Read the full security model →
Frequently asked questions
Is converting MP3 to AAC free?
Yes — the first 50 conversions every month are free on any plan, including MP3 to AAC.
Will I lose quality converting MP3 to AAC?
AAC is efficient lossy codec used by streaming and apple devices. We use the highest-quality encoder settings by default so visual or data loss is minimized.
Do you keep a copy of my file?
No, not by default. You choose a retention window at upload — immediate, 1 hour, 24 hours or 7 days — and the file is permanently deleted after that.
What is MP3?
Universally supported lossy audio format.
What happens if a conversion fails?
You get a clear error message and the job is marked failed in your history — we never silently drop a file. Retry is one click, and nothing is charged against your quota for a failed job.