Convert MP3 Files to AAC on Your Device

Make a AAC copy of MP3 in your browser for efficient distribution. Conversion stays on-device while a new AAC file is prepared.

Drop files here or browse (MAX 50 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

File name

Local conversion competes with other open apps for processor time during this MP3-to-AAC job.
Duration, resolution, and source bitrate affect how quickly MP3 is processed.
Keep the source until the AAC result passes a full playback check.

AAC serves streaming, mobile playback, and compact delivery, whereas MP3 commonly serves phones, websites, podcasts, and universal playback.
For MP3-to-AAC delivery, plan for quality loss when repeatedly re-encoded.
After leaving MP3, the receiving app must support the streams encoded inside AAC, not only its extension.

MP3 to AAC taking too long? Free local memory and keep the conversion tab in the foreground.
AAC converted from MP3 not opening? Test a compatible player and inspect the output streams.
If AAC is rejected, compare its codec and stream settings with the destination specification.

When does MP3 to AAC conversion make sense?

It is useful when MP3 media created for easy sharing must enter a AAC system designed for efficient distribution.

Where is the MP3 source processed?

The browser prepares AAC from MP3 on this device instead of sending the source to a remote conversion server.

How can I approve AAC converted from MP3?

Test the AAC file in the receiving app and compare duration, channels and loudness with the MP3 source.

Quick use cases