How do I convert AAC to M4A online for free?

Audio Conversion

Convert AAC to M4A Online

Free online AAC Audio to M4A Audio converter. Files are processed locally in your browser — no uploads, 100% private.

.AAC

.M4A

Drop your .AAC file here

or click to browse from your device

Accepts .AAC files

100% Private

Files never leave your device

Instant

In-browser processing

No Account

No sign-up required

How to Convert AAC to M4A Online

1Upload your .AAC file using the drop zone above or click to browse
2Your file converts automatically to .M4A format entirely within your browser
3Download your converted file — no account or email needed

Frequently Asked Questions

Upload your AAC Audio file using the drop zone above. Your file is instantly converted to M4A Audio format right inside your browser using client-side processing — no account, no software, and no cost. When conversion is complete, click Download to save your M4A file.

Completely. Our converter runs 100% in your browser using local processing, so your AAC file never leaves your device or touches any external server. We do not store, access, or transmit your files at any point.

Desktop: up to 500 MB. Mobile: up to 200 MB. All processing happens locally in your browser — your files are never uploaded to any server.