MP3 을(를) AAC 로 변환

Free online MP3 to AAC converter. Fast, secure, no signup required.

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Accepted: MP3 files · Max 100 MB per file

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Need to convert MP3 to AAC? MegaConvert makes it easy. Upload your MPEG Audio Layer III (MP3) file and get a Advanced Audio Coding (AAC) file in seconds — no software to install, no signup required. Whether you need this conversion for music playback, podcasting, device compatibility / web streaming, our online converter handles it instantly. Free for files up to 25MB, with support for larger files up to 2GB.

How to Convert MP3 to AAC Online

1
Upload your MP3 file
Click the upload area or drag and drop your MP3 file. Files up to 25MB are free. Larger files are supported with pay-per-use.
2
Choose AAC as output format
AAC is automatically selected on this page. You can adjust conversion settings if needed.
3
Click Convert
Hit the Convert button to start processing. Your file will be converted using our high-performance servers.
4
Download your AAC file
Once conversion is complete, click Download to save your new AAC file. Free files are available for 1 hour.

Why Convert MP3 to AAC?

**Reduce file size** — Converting between formats can significantly reduce file size, making files easier to share via email or cloud storage.
**Software requirements** — Your software or platform may require AAC format specifically. Converting ensures full compatibility.

MP3 vs AAC — Format Comparison

Feature	MP3	AAC
Full Name	MPEG Audio Layer III	Advanced Audio Coding
Developer	Fraunhofer Society	Fraunhofer Society, Dolby, Sony, Nokia, and others
First Released	1993	1997
Category	Audio	Audio
Extension	.mp3	.aac
MIME Type	audio/mpeg	audio/aac

Converting from lossy to lossless does not improve quality. Start from lossless source when possible.

About MP3 Format

Most popular lossy audio compression format, widely used for music distribution.

Full name: MPEG Audio Layer III

Developer: Fraunhofer Society (1993)

About AAC Format

Lossy audio codec offering better quality than MP3 at similar bit rates.

Full name: Advanced Audio Coding

Developer: Fraunhofer Society, Dolby, Sony, Nokia, and others (1997)

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Upload your MP3 file to MegaConvert.io, select AAC as the output format, and click Convert. Your converted file will be ready to download in seconds. No software installation required.

Yes! Files up to 25MB can be converted for free, up to 3 times per day. For larger files, pay-per-use pricing starts at just $2 for files up to 100MB.

Absolutely. All uploaded files are encrypted in transit (HTTPS), scanned for viruses, and automatically deleted after conversion. We never share or access your files.

Free users can convert files up to 25MB. Pay-per-use supports files up to 2GB. Subscribers get up to 2GB with priority processing.

Most popular lossy audio compression format, widely used for music distribution. Developer: Fraunhofer Society (1993).

Lossy audio codec offering better quality than MP3 at similar bit rates. Developer: Fraunhofer Society, Dolby, Sony, Nokia, and others (1997).