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

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.

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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