How to convert MP4 to AAC
1. Upload MP4
Select or drag and drop your MP4 file into the converter.
2. Choose AAC
Select AAC as your output format. You can process multiple files at once.
3. Download
Click convert and download your new AAC file instantly.
Format Details
MP4
MP4 (MPEG-4 Part 14) is the most widely used digital video container format, storing H.264/H.265 video and AAC audio for web, mobile, and broadcast delivery.
AAC
AAC (Advanced Audio Coding) is a lossy audio compression format standardized by ISO/IEC and designed as a higher-quality successor to MP3. It achieves better audio fidelity than MP3 at the same bit rate by using more advanced psychoacoustic models and encoding techniques. AAC is the default audio format for iTunes, Apple Music, YouTube, and all iOS devices, and is supported natively across virtually every modern platform.
Frequently Asked Questions
How do I convert MP4 to AAC?
Upload your MP4 file on Convertek, select AAC as the output format, then click Convert. Your AAC file will be ready to download instantly.
Is the MP4 to AAC converter free?
Yes. Converting MP4 to AAC on Convertek is completely free with no watermarks. Fair upload limits apply (typically 30 MB per file).
Is my file kept after conversion?
No. Files are processed temporarily and not stored permanently. Converted downloads are available only in your browser session.
What is the difference between MP4 and AAC?
MP4 and AAC are different file formats with distinct use cases. Converting between them lets you use your file in software or workflows that require the AAC format.