How to convert MP3 to AAC
Converting MP3 to AAC takes moments with Smart Convert Pro. Drop your MP3 audio into the converter above, press Convert, and download the AAC file. The conversion runs locally in your browser, so recordings never leave your device.
How to use Smart Convert Pro to convert MP3 to AAC
- Click Choose MP3 or drag and drop your MP3 files (up to 50 MB each).
- Review the queue — output is set to AAC, and you can add more files at any time.
- Press Convert and wait a moment while the audio is processed on your device.
- Download each AAC file, or save everything at once with Download all.
Why convert MP3 to AAC with Smart Convert Pro
- 100% private — Audio is converted in your browser — recordings are never uploaded to a server.
- Free and unlimited — No account, no watermark, no daily limits.
- Batch conversion — Queue multiple MP3 files and convert them together.
- No software to install — Works in any modern browser on desktop and mobile.
Frequently asked questions
Is this converter free?
Yes, it is completely free. There is no signup, no watermark, and no limit on how many files you can convert.
Are my files uploaded to a server?
No. Smart Convert Pro runs entirely in your browser. Files are converted on your own device and never uploaded, so nothing is stored on a server or seen by anyone else.
What's the maximum audio file size?
Each file can be up to 50 MB. Queue several files to convert them in one batch.
Can I convert multiple files at once?
Yes. Drop several files into the queue and convert them together, then download each file or grab everything with Download all.