MP3 to M4A Converter - free, no upload, in your browser

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Why this runs on your computer

There is no upload: The work happens in this tab. Your file never travels, so there is no copy of it anywhere but your own disk.
Nothing to delete later: Sites that upload promise to delete your file afterwards. That promise only matters because the file was theirs to hold.
It works with the Wi-Fi off: The honest test. Turn off your connection and the tools keep working, because everything they need is already here.

Drop your file hereto convert it

Nothing is uploaded - the tools run right here

Applies to every loaded image

Look Strength 100% Brightness Contrast Saturation Vibrance Vignette

Max width

Format Shape

Colours 6 Detail 1 Smooth curves

Shape Size Across Down Border

Text Where

100%

Questions

Why convert MP3 to M4A?

MP3 is the format that plays on absolutely everything. M4A is the Apple container for AAC, and what iTunes and Voice Memos produce. Converting is how you move a file from the first situation to the second.

What will the M4A file be?

AAC at 192 kbps in an M4A container - the format iTunes, Apple Music and iPhones use.

Does converting MP3 to M4A lose quality?

A little, because both are lossy: the MP3 file was already compressed, and M4A compresses again. At this setting it is rarely audible, but keep the original if you may need to convert it again.

Does converting lose quality?

Going to a lossless format never does. Going to a lossy one always does, though usually not audibly at the settings used here.

Convert MP3 to M4A without uploading it

How to convert MP3 to M4A

Why this one stays private

Questions

The same tool, other formats