MP3 – MPEG-1 Audio Layer III
MP3 (MPEG-1 Audio Layer III) is a widely used audio format supported by this browser-based converter.
MP3 to AAC Converter
Choose an MP3 file to convert to an AAC file. Works completely in your browser. Free and no ads.
Select a file to convert
Drop your MP3 file here or choose one from your device
Private and Secure: Files never leave your device. Media conversion runs entirely in your browser.
Quick guide
About MP3 to AAC conversion
AAC – Advanced Audio Coding
AAC (Advanced Audio Coding) is a widely used audio format supported by this browser-based converter.
Quick guide
How to Convert MP3 to AAC
- 01
Choose your MP3 file
Select or drag your MP3 file from your device into the converter.
- 02
Convert to AAC
Choose AAC as the output format, then start the local browser conversion.
- 03
Download your AAC file
Save the finished AAC file to your device.
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Updated
| Limit | Free | Unlimited |
|---|---|---|
| Price | US$0 | US$20/mo or US$120/yr |
| Each file | 20 min / 200 MB | Up to 10 hours or 5 GB |
| Daily file limit | None | None |
| Processing | Locally in the browser | Optional cloud upload |
| Languages | 100+ | 100+ |
Frequently asked questions
Is it really free?
Yes. It is free with no sign-up and no daily file limit: each file up to 20 minutes and 200 MB is processed locally in the browser, in 100+ languages; Unlimited (US$20/mo or US$120/yr) adds optional cloud upload.
How do I convert MP3 to AAC?
Choose your MP3 file, select AAC, and click Convert. When processing finishes, download the converted file.
Is this MP3 to AAC converter free?
Yes. This converter is free to use, with no account, subscription, or ads.
Are my MP3 files uploaded?
No. Conversion runs locally in your browser, so your media file stays on your device.
What happens when converting MP3 to AAC?
The converter re-encodes the selected audio and creates a file in AAC format.
Which browsers and devices support MP3 to AAC conversion?
The converter works in current desktop browsers on Windows, macOS, Linux, and ChromeOS. Performance depends on file size and device hardware.