AIFF to MP3

What this does

AIFF is Apple’s uncompressed format and WAV’s counterpart — same idea, different header, born on the Macintosh rather than on Windows. Logic, Pro Tools and older Mac audio tools write it, and it is the same size as WAV: about 10 MB a minute at CD settings.

AIFF is the uncompressed format Apple audio tools write. Like WAV, it is large.

Uncompressed in, lossy out

Like FLAC, and unlike most pairs here, AIFF is a bit-perfect source: nothing has been discarded before you start. That makes this a first-generation encode and worth a high bitrate — 256 or 320 kbps if the result is going to be kept rather than just sent once. Expect roughly a sevenfold reduction at 192 kbps, so a five-minute AIFF of about 50 MB lands near 7 MB.

Nothing is uploaded

The conversion happens inside this page. Your file is read by the browser, converted here, and saved straight back to your downloads. It is never sent to a server, so there is no upload wait and no size cap beyond what your own device can hold.

Open your browser’s developer tools, switch to the network panel, and convert a file. You will see the converter itself download once, and no upload of your audio at all. That is the whole difference between this and a site that converts on a server, and what that difference actually means is worth a read.

The first conversion is slower

The converter is about 32 MB and downloads the first time you use it, which is the one moment this page is not instant. After that it is cached, and later conversions start immediately, even offline. So do later visits.

Questions