AIFF to M4A converter
Turn AIFF files into M4A for free. The conversion runs entirely in your browser, so your audios are never uploaded anywhere.
How to convert AIFF to M4A
- Add your AIFF files. Drop one or more .aiff files on the box above, or tap it to pick them from your device.
- Let it convert. The first audio you convert loads the converter once (about 31 MB, then cached). After that it runs on your device; a progress bar shows how far along it is.
- Download the M4A. Press Download next to each file. Nothing was sent to a server, so close the tab and it's gone.
What is a AIFF file?
AIFF is Apple's uncompressed audio format, the Mac equivalent of WAV, used in music production and Logic Pro.
What is M4A?
M4A is AAC audio in an MP4 container. iPhones save voice memos and iTunes music as M4A.
Why convert AIFF to M4A?
AIFF is great for Mac music production and archiving, but files are huge and Windows apps and phones may not play them. M4A is the better choice for Apple devices, with good quality at small sizes; keep in mind some Windows apps, older players and upload forms only take MP3.
Will I lose quality?
M4A uses lossy compression tuned so the difference is invisible to the ear at normal use. We use high-quality settings by default.
Private by design
Most online converters upload your file to their servers. This one doesn't: the converter itself is loaded into your browser and works offline from there, so your audios never leave your phone or computer.
Questions
Is this AIFF to M4A converter free?
Yes, completely free, with no sign-up, no watermark and no daily limit.
Are my AIFF files uploaded?
No. The conversion happens inside your browser on your own device. Nothing is sent to us or anyone else.
Can I convert AIFF to M4A on iPhone or Android?
Yes, in a modern browser. Phones are slower than computers for video, and very long videos can run out of memory on older phones.
Can I convert several files at once?
Yes. Drop as many as you like; they are converted one after another and each gets its own download button.
Is there a file size limit?
No fixed limit, but your browser has to hold the whole file in memory, so files over about 2 GB may fail.