Audio tool

Convert AMR Files to M4A on Your Device

Convert AMR to M4A in your browser for everyday audio delivery. The source remains on your device throughout local processing.

Route AMR → M4A

or drop here · up to 500 MB

Max 50 MB per file

Preview (optional)

When your browser supports it, your audio plays here. You can still convert your file if preview does not load.

Ready

Use upload name

Encoding speed depends on the processor available to this tab during this AMR-to-M4A job.
Available memory can limit very large AMR conversion jobs.
Check picture, sound, and timing in M4A before removing the source.

M4A serves Apple devices, podcasts, and compact music files, whereas AMR commonly serves telephony recordings and voice-focused mobile systems.
For AMR-to-M4A delivery, plan for codec differences hidden by the extension.
After leaving AMR, the receiving app must support the streams encoded inside M4A, not only its extension.

AMR to M4A taking too long? Check available memory; long, high-resolution sources need substantially more.
M4A converted from AMR not opening? Test a compatible player and inspect the output streams.
Use the receiving app’s documented M4A profile when generic playback succeeds but import fails.

When does AMR to M4A conversion make sense?

It is useful when AMR media created for compact speech delivery must enter a M4A system designed for everyday audio delivery.

Where is the AMR source processed?

The browser prepares M4A from AMR on this device instead of sending the source to a remote conversion server.

How can I approve M4A converted from AMR?

Test the M4A file in the receiving app and compare duration, channels and loudness with the AMR source.

Quick use cases