Free online AAC to AT3 converter

Convert AAC audio to Sony ATRAC3 AT3 for compatible devices and legacy software.

Convert AAC to AT3 online - free

.aac .at3

Drop up to 3 .AAC files here or click to browse

Max 10 MB per file · No registration required · max 30 MB total

Need to convert bigger files or more at once? See plans

Want the highest limits and no ads? See plans

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Selected files exceed the 30 MB total limit. Please select fewer or smaller files.

Your file is processed instantly and deleted as soon as you download it.

How it works

1/3

Upload your .aac file

Click to browse to select your file you want to convert or simply drag & drop your file into selected area.
2/3

Perform .aac to .at3 conversion

After successful file upload, click to convert when you are ready.
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Download converted .at3 file

Conversion result is ready to download.

How to convert aac to at3 file

October 24, 2026
Audio
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101convert.com assistant bot
24m

AAC files need conversion to AT3 when a Sony device, PlayStation Portable application, or older Sony audio workflow accepts ATRAC3 but not AAC. The conversion decodes the AAC stream and re-encodes it as ATRAC3, so it cannot be lossless.

Note: This aac to at3 conversion record is incomplete, must be verified, and may contain inaccuracies. Please vote below whether you found this information helpful or not.

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Frequently asked questions

Is the AAC to AT3 converter free?

Yes, converting AAC to AT3 on 101convert.com is completely free. No registration, email address or installation is required. If you need a higher file size limit or want to convert more files at once, see our plans.

How large can my AAC file be?

You can upload AAC files up to 300 MB and convert up to 50 files at once in a single batch.

What happens to my uploaded files?

Files are processed automatically and deleted from our servers within a few minutes after conversion. We never view or share your files.

Do I need to install any software to convert AAC to AT3?

No. The AAC to AT3 conversion runs entirely online in your browser and works on Windows, Mac, Linux, Android and iPhone.

Did the conversion fail?

In most cases, the cause is an incorrect file format. Please upload a valid AAC file for this AAC to AT3 conversion. Occasionally, the issue may be on our side. We analyze recurring conversion failures and disable or fix the converter if we detect a defect.

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Additional formats for
aac file conversion

Reverse conversion

at3 to aac

Convert to at3 from
other formats

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