Convert AIFF to MP3.
AIFF is Apple's uncompressed audio format — pristine, but huge. Convert it to MP3 to shrink the file dramatically and play it on any device, with quality that's hard to tell apart.
Studio quality, everyday size
AIFF is what you get out of GarageBand, Logic and a lot of Mac recording workflows — every sample preserved, nothing thrown away. That's exactly what you want while editing, and exactly what you don't want when you're trying to email a track or fit a playlist on your phone. MP3 keeps the listening experience while collapsing the file to a fraction of the size.
When to keep AIFF
If you're still mixing or mastering, stay in AIFF or WAV — repeated lossy re-encodes aren't ideal. Convert to MP3 as the last step, when the audio is finished and just needs to travel.
How it works
- 01
Add your AIFF
Drop one or many .aiff / .aif files, or click to browse. Private by default.
- 02
Convert with a local engine
AIFF becomes MP3 with ffmpeg — no paid API in the loop.
- 03
Download or transcribe
Grab your MP3, or send it to TranscriptAI for a transcript.
A fraction of the file size
Plays on every device and app
High-bitrate, faithful audio
Private uploads, auto-deleted after 1 hour
Batch convert a session's worth at once
Transcript-ready output
Your file is ready. Want to do more with it?
Open this file in TranscriptAI to generate a transcript, summary, structured notes, flashcards, quiz questions or action items — automatically.
Common questions
What is an AIFF file?+
AIFF (Audio Interchange File Format) is Apple's uncompressed audio standard — the Mac equivalent of WAV. It stores audio with zero compression, so it sounds perfect but takes up a lot of space, which is why you'd convert to MP3 for everyday use.
How much smaller will it get?+
A lot — uncompressed AIFF can be roughly ten times the size of a high-quality MP3 of the same audio.
Is it free?+
Yes — convert AIFF to MP3 free, with no signup. Paid plans add larger files and bigger batches.
Is my file private?+
Uploads go to a private bucket, are converted, and auto-delete after 1 hour. Files never touch a third-party converter.
Related workflows