Offline ConverterConvert AIFF to MP3 on Mac
Turn AIFF Audio files into MP3 Audio right on your Mac — fully offline. No uploads, no watermark, no size limit. Drag in one file or a whole folder and convert in seconds, accelerated for Apple Silicon.
How to convert AIFF to MP3 on a Mac
Open Offline Converter for Mac and drag your AIFF file (or many) into the window.
Choose MP3 as the output format and adjust quality or size if you need to.
Click Convert — the MP3 file is saved straight to your Mac. Done, offline.
Why convert AIFF to MP3 locally
Your files stay private
Your AIFF files never get uploaded. Everything is processed on-device, so sensitive photos and documents stay yours.
No watermark, no limits
Convert as many AIFF files to MP3 as you want — no watermark, no size cap, no daily quota.
Fast on Apple Silicon
Conversion is hardware-accelerated and runs at the speed of your SSD, even for large batches.
About AIFF and MP3
AIFF Audio. AIFF Audio is a common audio format. MP3 Audio. MP3 Audio is a widely supported audio format.
AIFF to MP3 — FAQ
Is converting AIFF to MP3 free?
The 3-day trial converts AIFF Audio to MP3 Audio with no watermark, no size limit and nothing uploaded. After that the app is $29.99 once — not a subscription.
Do my AIFF files get uploaded?
No. The conversion happens entirely on your Mac. Your AIFF files never leave your device — it even works offline.
Can I convert many AIFF files at once?
Yes. Drop a whole folder of AIFF files and convert them all to MP3 in a single batch.
Features
Convert AIFF to MP3 on Mac
Free 3-day trial, then $29.99 once · macOS 11+ · Nothing leaves your device