Convert AIFF to MP3 Online for Free
AIFF to MP3 Converter — Free Online | f2file
AIFF files sound great but take up a lot of space. Convert them to MP3 to shrink the file size dramatically while keeping solid audio quality. Works in your browser — just upload and download.
How it works
Upload the AIFF
Choose the large audio file you want to shrink.
Convert to MP3
The uncompressed audio is encoded into a smaller MP3.
Download and listen
Check the output for quality, volume, and file size.
Frequently asked questions
About AIFF to MP3
AIFF to MP3 converts large uncompressed audio files into smaller, shareable MP3s. AIFF is common in Mac and studio workflows, but it is too large for many email, web, and mobile uses. MP3 is a delivery copy. Keep the AIFF if it is your master recording or production export. Choose higher bitrate for music and lower bitrate for voice or rough demos. Use this for client previews, portable listening, podcast drafts, music demos, and uploads that do not need uncompressed audio.
Updated June 2026: Added guidance for converting large AIFF audio to MP3 for sharing, demos, email, and portable listening.