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Convert AIFF to MP3 on your Mac

AIFF lands on your Mac straight from your iPhone, Music, or camera. Convert AIFF to MP3 on your device, nothing uploaded. The desktop app batches a whole folder at once.

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How to Convert AIFF to MP3 on a Mac

  1. 1

    Get TeraConvert for Mac

    Built for Apple Silicon. One-time Pro purchase, 14-day money-back guarantee.

  2. 2

    Drop your AIFF files

    One file or a whole batch at once.

  3. 3

    Pick MP3 and convert

    Everything runs locally; nothing is uploaded.

Why Convert AIFF to MP3?

AIFF stores audio uncompressed the way WAV does, which is wonderful for editing and ruinous for storage, since a few minutes of stereo runs to tens of megabytes. MP3 shrinks that by roughly ten to one with no loss you are likely to hear on normal gear.

Converting turns a bulky Apple master into something that fits on a phone and travels.

AIFF
MP3
Compression
Uncompressed (PCM)
Compression
Lossy
Bit depth
16 / 24-bit
Typical bitrate
128-320 kbps
Sample rate
Up to 192 kHz
Sample rate
44.1 kHz / 48 kHz
Metadata
Limited
Metadata
ID3 tags
Device support
Apple, modern players
Device support
Universal
Typical use
Pro audio on Mac
Typical use
Music, podcasts

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Frequently Asked Questions

How do I convert AIFF to MP3 on a Mac?
Install TeraConvert for Mac, drag the AIFF file in, and choose MP3. The conversion runs through native engines on your own disk, so nothing is uploaded and nothing is queued on someone else's server. macOS on Apple Silicon.
Can I convert AIFF to MP3 in the browser?
No. AIFF runs in the desktop app through FFmpeg, locally on your Mac. Nothing is uploaded.
Does converting AIFF to MP3 lose quality?
AIFF is an uncompressed master, and MP3 is lossy, so some data is discarded by design. At 320 kbps the result is transparent to most listeners on typical speakers and headphones.
How much smaller will the MP3 be?
Roughly a tenth of the size. A three-minute AIFF near 30 MB comes down to about 7 MB as a 320 kbps MP3.
Should I keep the original AIFF?
Yes, if it is a master you might edit again. AIFF is your lossless source; use the MP3 for listening and archive the AIFF, since re-encoding from MP3 only loses more.
Is my file still private in the desktop app?
Yes. The desktop app converts with native engines on your Mac and works offline after a one-time activation check. Nothing is uploaded, in the browser or on desktop.

Encoding a large AIFF archive?

TeraConvert Desktop encodes multi-gigabyte AIFF files to MP3 through native FFmpeg with no browser heap limit.

Get TeraConvert for MacThis format runs in the Mac app. One-time Pro purchase, 14-day money-back guarantee.