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.
Inside The Conversion
See The Input. Inspect The Result.
A real AIFF to MP3 conversion using a sample file. Compare the files below, then use the converter above with your own file.
Recorded Sample
Converted on the server in this run.
gymnopedie-no-1.aiff
Waveform Preview, 20 s of audio
gymnopedie-no-1.mp3
Waveform Preview, 20 s of audio
Previews show the sample files from this recorded conversion. Choose Input or Result to focus on one file.
View The Original Run Capture
A screenshot of the completed run, preserved in its original theme. The comparison above adapts to your current theme.
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.
On a Mac? See the step-by-step How to convert AIFF to MP3 on Mac guide.
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
AIFF to MP3: re-encoded
MP3 is a compressed, lossy audio format, so this re-encodes the sound and the file gets smaller. Every lossy re-encode sheds a little quality, so convert from the best source you have rather than chaining conversions.
Need more than a conversion?
Send your audio or video to 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. No signup and no watermark. Free covers 10 server conversions a day, up to 100 MB a file. Pro removes the daily limit and raises the file limit to 2 GB.
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.