Phone recordings, voice memos and music downloads often land as M4A files, which are compact because the audio inside is compressed. That is fine for listening, but awkward when you want to trim, clean up or mix a recording properly. This free m4a to aiff converter decodes an M4A track and rewrites it as an uncompressed AIFF for editing on a Mac or in a DAW. Everything runs in your browser, so your file is never uploaded and no signup is needed. The honest limits: the AIFF output is 16-bit PCM, and compression detail already lost inside the M4A does not come back.
How to use this m4a to aiff converter
From a compact phone file to an edit-ready AIFF.
Choose a .m4a file, a voice memo, a recording or a music track.
Decoding and AIFF writing happen on your own device, so nothing is uploaded.
Save the uncompressed file and open it in your Mac editor.
Why this m4a to aiff converter helps phone recordings
M4A is built for storage. AIFF is built for working on the audio.
Trims, fades and level fixes behave better on uncompressed audio than on a compressed phone file.
AIFF is the natural uncompressed format for Logic Pro, GarageBand and other Mac editors.
The decoded sample rate and channel layout are carried into the 16-bit PCM AIFF.
Personal recordings and memos are converted on your own device and never uploaded.
M4A to AIFF Converter FAQs
Short, direct answers to the questions readers ask most.
No. M4A is a container that usually holds AAC-compressed audio, while MP3 is its own compressed format. Both are lossy, and both convert to AIFF the same way here.
No. Detail lost when the M4A was compressed cannot be recovered. The AIFF only preserves what the M4A still contains, without adding further loss while you edit.
Yes, noticeably. Uncompressed audio stores every sample in full, so expect a much bigger file than the compact M4A.
Yes. AIFF is a standard import format for GarageBand and Logic Pro on macOS.
Yes. It runs entirely in your browser, with no account, no signup and nothing uploaded.
Related Tools
More free converters that work the same way — right in your browser.
Turn a raw AAC file into an uncompressed AIFF for editing, in your browser.
MP3 to AIFF ConverterTurn an MP3 into an uncompressed AIFF for editing, in your browser.
FLAC to AIFF ConverterTurn a lossless FLAC track into an AIFF for Apple workflows, in your browser.
M4A to MP3 ConverterConvert an M4A track into a universally playable MP3, in your browser.
Try the related tools above, or go back to the Convertion homepage for more free converters.
