Audio tool

Convert AC-3 Files to AAC on Your Device

Convert AC-3 to AAC in your browser for efficient distribution. The source remains on your device throughout local processing.

Route AC3 → AAC

or drop here · up to 500 MB

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

Adapt multichannel delivery to a workflow built for efficient distribution
Supply AAC when an editor, player, or delivery form will not accept AC-3
Create a AAC copy from AC-3 for streaming, mobile playback, and compact delivery

Encoding speed depends on the processor available to this tab during this AC-3-to-AAC job.
Long AC-3 files consume more memory and take longer to decode.
Compare the AAC duration with the source before publishing.

AAC serves streaming, mobile playback, and compact delivery, whereas AC-3 commonly serves DVD, cinema, and home-theater audio.
For AC-3-to-AAC delivery, plan for quality loss when repeatedly re-encoded.
After leaving AC-3, the receiving app must support the streams encoded inside AAC, not only its extension.

AC-3 to AAC taking too long? Close other demanding apps, then test a short sample before the full file.
AAC converted from AC-3 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 AC-3 to AAC conversion make sense?

It is useful when AC-3 media created for multichannel delivery must enter a AAC system designed for efficient distribution.

Where is the AC-3 source processed?

The browser prepares AAC from AC-3 on this device instead of sending the source to a remote conversion server.

How can I approve AAC converted from AC-3?

Test the AAC file in the receiving app and compare duration, channels and loudness with the AC-3 source.

Quick use cases