Convert AIFF to M4A Free

The catch with most "free" converters shows up at the end: the download needs an account, a watermark tone is mixed into the audio, or your file waits in a queue behind paying users. None of that applies here. The engine is the same one Pro uses — same speed, same bitrate options — and the output is clean and unmarked.

Free also means free of the usual hidden cost: your file. Many no-cost converters are free precisely because your upload is the product. Here the conversion runs in your browser, so the AIFF never leaves your device. Given that AIFF files usually come from Logic Pro and GarageBand bounces, old iTunes rips, and Mac sample libraries, that's worth more than the price.

AIFF costs you around 10 MB for every minute; M4A asks for about 1.2. Over a long recording that gap is the whole reason to convert. Starting from AIFF means the encoder isn't working around someone else's compression. That's why this produces a better M4A than converting from an already-lossy file would.

Free covers input files up to 20MB file size limit with a 10-second preview output, and 5 conversions per month. Pro removes those limits for full-length conversions up to 500MB file size limit — and the privacy behaviour is identical, because there was never a server in the loop.

Most people meet AIFF through Logic Pro and GarageBand bounces. It is a fine format there; the trouble is that AIFF is uncompressed like WAV, so a four-minute song is 40 MB+ and won't attach to an email. M4A is the destination because it plays essentially everywhere — iPhone Voice Memos and every ordinary phone, browser, and player. AIFF costs you around 10 MB for every minute; M4A asks for about 1.2. Over a long recording that gap is the whole reason to convert. Because AIFF is uncompressed, encoding to M4A here is the clean, single-generation case — the encoder sees the whole original signal, so this M4A is as good as the format gets.