MP3 to AIFF Converter

Convert MP3 files to AIFF online for free. Upload one file or many and download the AIFF results one by one or all together in a ZIP. No sign-up needed.

Drop your MP3 files here
or click to choose MP3 files · up to 95MB each

How to convert MP3 to AIFF

  1. Choose your files. Click Select File or drag your MP3 files into the upload box. You can add many at once.
  2. Pick the settings. AIFF is already selected as the output format. The conversion starts as soon as a file is added.
  3. Download. Each file appears in the list when it is ready. Download them one by one, or all together with Download all.

MP3 – MPEG Audio Layer III

MP3 is the most widely supported lossy audio format. It makes music files small enough to share and plays on virtually every device.

More MP3 conversions

AIFF – Audio Interchange File Format

AIFF is Apple's uncompressed audio format, comparable to WAV. It is used in music production on Mac.

More AIFF conversions

Converting MP3 to AIFF

Frequently asked questions

How do I convert MP3 to AIFF?

Click Select File or drop your MP3 file onto the upload box. The converted AIFF appears in the list below with a download button. You can add many files at once and download them together as a ZIP.

Is it really free?

Yes. There is no sign-up and no watermark. To keep the service available for everyone there is a 95MB limit per file and a cap on how many files one connection can process in a short period.

Are my files stored?

Your upload is used only to make the converted file. Images are processed in memory; other files are written to a private temporary folder that is deleted as soon as the conversion finishes. Nothing is kept after the result has been sent back.

Will quality drop?

For images, a little, by design: the image is re-encoded at the Quality you choose (default 75%). Audio and video are re-encoded with high-quality settings; documents keep their text and layout as far as the target format allows. Converting never restores detail that is already missing from the original.

How this works: your file is uploaded over HTTPS and converted on this server with open-source engines (libvips for images, FFmpeg for audio and video, LibreOffice and Pandoc for documents, Calibre for ebooks, Ghostscript and Inkscape for PDF and vector files). Images are processed in memory; other files use a private temporary folder that is deleted as soon as the conversion finishes.