AIFF to M4A Converter

Convert AIFF audio files to M4A format. Get efficient AAC compression that's perfect for iTunes, iPhone, and Apple devices while keeping excellent audio quality.

AIFFM4A

Drop your AIFF file here or click to browse

AIFF (.aiff) · Max 20 MB

Free — 10-second preview, 5 conversions/month. Upgrade for unlimited

What is AIFF?

Apple's uncompressed format. Similar to WAV but with better metadata support. Used in professional Mac audio workflows.

What is M4A?

Apple's preferred audio format. Better quality than MP3 at same bitrate. Default for iTunes and Apple devices.

Why Convert AIFF to M4A?

AIFF to M4A solves the everyday problem of Mac-made audio being too big to move: a Logic or GarageBand bounce, an iTunes AIFF rip, or a sample weighs about 10 MB per minute, while the same audio as 256 kbps AAC in an M4A is under 2 — and stays inside the Apple format family where these files usually live. That family matters. M4A is Apple's own delivery format: it imports into the Music app without a fight, syncs to iPhone, carries artwork and tags the Apple apps actually display, and plays natively on Android, Windows, and every modern browser too, despite the Apple reputation. Because AIFF is uncompressed, the encode is a single clean step from the master — the best-case scenario for a lossy format, with no stacked generations. The typical workflows: sending a mix or demo to someone without hitting attachment limits, getting a session bounce onto your phone for reference listening, or shrinking an AIFF collection that is quietly eating a disk. Keep the AIFF originals for editing and archival — M4A is lossy, and the discarded detail cannot be recovered — and treat the M4As as the copies that travel. Conversion happens locally in your browser, so unreleased music never touches a server.

Who Uses This Converter

Demos & mixes to collaborators

A 40 MB bounce becomes a 7 MB M4A that emails instantly and sounds the same to the listener.

Reference listening on iPhone

Get last night's session onto your phone via the Music app without filling its storage.

Shrink an AIFF collection

Old iTunes AIFF rips compress ~5× into Apple-native files with tags and artwork intact.

Plays beyond the Mac

M4A works on Android, Windows, and the web too — unlike AIFF, which non-Apple tools often refuse.

Frequently Asked Questions

How much smaller will the M4A be compared to AIFF?

About 85-90% smaller. A 50MB AIFF file typically becomes 5-7MB as M4A at 256kbps.

Will I lose audio quality?

AAC is a lossy codec, so some compression happens. At 256kbps, the difference from the AIFF original is nearly imperceptible in normal listening.

Can I play M4A on non-Apple devices?

Yes. Android supports M4A natively, and most modern media players handle it fine.

How much smaller will the M4A be?

Around 80-85% smaller. A 40 MB four-minute AIFF becomes roughly 6-8 MB as 256 kbps AAC — with a difference that is inaudible in normal listening because the encode comes straight from the uncompressed master.

M4A or MP3 for sharing my bounce?

M4A sounds better at the same size and handles Apple metadata properly; MP3 wins only on playing absolutely everywhere, including very old devices. For collaborators on modern gear, M4A is the better pick.

Should I keep the AIFF after converting?

Yes, if it is your own work. AIFF is the uncompressed master; M4A is a lossy copy for sharing and listening. Re-export from the master whenever you need another format.

Is this AIFF to M4A converter free?

Yes. Free users get 5 conversions per month. The output is limited to the first 10 seconds as a preview, with a 20MB input file size limit. Upgrade to Pro for unlimited, full-length conversions.