MP3 to AAC
Convert MP3 files to AAC right in your browser. Your files never leave your device.
- No upload
- No account
- Free, no watermark
Drop MP3 files here
Converted on this device. Nothing is uploaded.
How it works
How to convert MP3 to AAC
Add your files
Drop MP3 files into the box above, or press Choose files. You can add as many as you like.
Wait a moment
Each file is converted on your device as soon as you add it. Adjust the settings first if you need to.
Download
Save each file on its own, or download everything at once as a ZIP file.
Why
Why convert MP3 to AAC?
Convert MP3 to a raw AAC file for devices and apps that ask for .aac files.
Compared
MP3 and AAC compared
| Property | MP3 | AAC |
|---|---|---|
| Full name | MPEG-1 Audio Layer III | Advanced Audio Coding |
| Compression | Lossy | Lossy |
| Size per minute | About 1.4 MB at 192 kbps | About 1 to 1.5 MB at 128 to 192 kbps |
| Best for | Music, podcasts and voice recordings to share | Music and video soundtracks with good quality at small sizes |
| Compatibility | Plays on every device, car stereo and app | Most phones and players; some car stereos, editors and upload forms want MP3 |
Formats
About the formats
What is MP3?
MP3 is the most widely supported audio format in the world. It uses lossy compression to make files roughly a tenth the size of uncompressed audio. At 192 kbps or higher most listeners cannot tell it apart from the original.
What is AAC?
AAC was designed as the successor to MP3 and gives better sound at the same bitrate. It is the audio format of iTunes, YouTube and most MP4 videos. On its own it is saved as a .aac file, and inside an MPEG-4 container it becomes an M4A file.
Questions
Questions and answers
Is it safe to convert my files here?
Yes. ConvertOrino converts your files with code that runs in your own browser. Nothing is uploaded to a server, nobody else can see your files, and they are gone as soon as you close the page.
Are the title, artist and album kept?
Yes. Tags such as title, artist, album and year are copied to the new file wherever the format can store them. Embedded cover art is not copied.
Is the MP3 to AAC tool free?
Yes, completely free. There is no sign up, no watermark and no limit on the number of files.
Is there a file size limit?
There is no fixed limit, because your own device does the work. Very large files are limited by the memory of your device. Phones handle files of a few hundred megabytes, computers handle much more.
Does it work on iPhone, Android, Mac and Windows?
Yes. It works in any modern browser, including Safari, Chrome, Edge and Firefox, on phones, tablets and computers. Nothing needs to be installed.
Does it work offline?
Yes. Once the page has loaded, the conversion works without an internet connection, which also proves that your files are not sent anywhere.
More tools
Related tools
Need another format? Pick what you have and what you want, and the right converter opens.
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