AAC to MP3 Converter
Convert AAC to MP3. Batch-ready, stays in your browser.
Drop files here
or click to browse · paste from clipboard
Accepts .AAC, .M4A · Up to 1,000 files
How it works
Drop your files
Drag and drop, click to browse, or paste from clipboard. Up to 1,000 files at once.
Click Convert
Everything runs in your browser via WebAssembly. AAC to MP3 Converter happens locally — no server involved.
Download
Download files individually or grab all at once as a ZIP.
Frequently asked questions
AAC is the default audio format on Apple devices — iTunes purchases, Voice Memos, and most iPhone recordings save as AAC or M4A. MP3 has broader compatibility with older hardware, car stereos, non-Apple devices, and software that predates AAC support.
Both AAC and MP3 are lossy formats, so converting between them involves a second round of lossy compression. The output quality is good but not identical to the source. For archiving, keep the original AAC. For sharing or compatibility, MP3 is fine.
Yes. M4A is an AAC audio stream inside an MPEG-4 container — this tool handles both .aac and .m4a files.
Yes. Drop as many as you need. Each file converts separately in your browser, and the results download as a ZIP.
Never. Conversion runs entirely in your browser using WebAssembly. Your files do not leave your device.