MP3 to M4A
Convert MP3 files to M4A 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 M4A
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 M4A?
Some apps and Apple workflows, such as iPhone ringtones made in GarageBand, expect M4A. Converting encodes the MP3 again as AAC in an M4A file.
Compared
MP3 and M4A compared
| Property | MP3 | M4A |
|---|---|---|
| Full name | MPEG-1 Audio Layer III | MPEG-4 Audio (usually AAC) |
| Compression | Lossy | Lossy (AAC), sometimes lossless (ALAC) |
| Size per minute | About 1.4 MB at 192 kbps | About 1 MB at 128 kbps |
| Best for | Music, podcasts and voice recordings to share | iPhone voice memos and Apple Music downloads |
| Compatibility | Plays on every device, car stereo and app | Apple devices and most modern players; some older devices and apps do not support it |
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 M4A?
M4A is an audio file in the MPEG-4 container, usually encoded with AAC. iPhone Voice Memos and many Apple apps save audio as M4A. Some car stereos, older players and upload forms only accept MP3.
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.
Will converting MP3 to M4A improve the quality?
No. Quality lost in the MP3 cannot come back. Use this when an app needs M4A, and pick a bitrate at least as high as the MP3 to avoid further loss.
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 M4A 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.
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