Convert MP3 to M4A

MP3 vs M4A: what is the difference?

The most widely used lossy format, playable on nearly every device and app. AAC audio in an MP4 container, common on Apple devices and streaming services.

What happens to the sound quality?

Both MP3 and M4A are lossy, so each conversion costs a little more quality. Convert from the original if you have it.

How much will the file size change?

For a 3-minute stereo track, MP3 is about 4.3 MB and M4A is about 4.3 MB. Actual sizes depend on the track and settings.

When should you choose M4A?

M4A is a good fit when you are using iPhones and other Apple devices.

FAQ

Does converting MP3 to M4A reduce the sound quality?

Both MP3 and M4A are lossy, so each conversion costs a little more quality. Convert from the original if you have it.

Are my files uploaded to a server?

Files never leave your device; everything runs in your browser.

What is the M4A format used for?

AAC audio in an MP4 container, common on Apple devices and streaming services. M4A is a good fit when you are using iPhones and other Apple devices.