Convert MP4 to AAC
Free, fast and secure — convert MP4 to AAC right in your browser.
MP4
AAC
Pull the audio out of your MP4 as AAC
Converting MP4 to AAC extracts a clean audio track from your video, giving you a compact AAC audio you can play, share or add to a playlist without the video.
How to convert MP4 to AAC
- 1 Drop your MP4 file into the converter above.
- 2 It is converted to AAC automatically — no settings to fiddle with.
- 3 Download your new AAC file instantly.
MP4 vs AAC
| Feature | MP4 | AAC |
|---|---|---|
| Compression | Lossy | Lossy |
| Transparency | No | No |
| Animation | Yes | No |
| MIME type | video/mp4 | audio/aac |
| Best for | Sharing, streaming and uploading video anywhere with maximum compatibility. | Streaming and modern playback where quality-per-byte beats raw compatibility. |
About the formats
MP4
MP4 video
MP4 (H.264) is the universal video container. It balances quality and file size beautifully and plays on virtually every device, browser and platform.
Strengths
- Plays almost everywhere
- Great quality-to-size ratio
- Ideal for streaming and social media
Limitations
- Lossy compression
- Less flexible than MKV for multiple tracks
- Older codecs can look dated
Best for: Sharing, streaming and uploading video anywhere with maximum compatibility.
AAC
AAC audio
AAC is the successor to MP3, offering better sound at the same bitrate. It is the standard for streaming services, YouTube and Apple devices.
Strengths
- Better quality than MP3 at equal size
- Standard for streaming platforms
- Wide modern-device support
Limitations
- Lossy compression
- Slightly less universal than MP3
- No lossless mode
Best for: Streaming and modern playback where quality-per-byte beats raw compatibility.
Frequently asked questions
Upload your MP4 file above and it is converted to AAC automatically. When it is ready, download your new AAC audio — the whole thing takes just a few seconds in your browser.
Converting MP4 to AAC extracts a clean audio track from your video, giving you a compact AAC audio you can play, share or add to a playlist without the video.
Converting between compressed formats can introduce minor changes, but our converter keeps your AAC looking as close to the original as possible.
Yes. The converter is free to use, with no watermark and no sign-up required.
Your files are processed securely and are never shared with anyone.