AIFF (Audio Interchange File Format) is Apple's uncompressed audio format, similar to WAV. It's used in professional audio software on Mac and stores audio without any quality loss, which is why files are very large.

Does converting AIFF to MP3 reduce quality?

Yes. MP3 is lossy, so some audio detail is discarded. At 320 kbps, the difference from the original AIFF is inaudible to most people. At 128 kbps, it may be noticeable on quality headphones.

Are my files uploaded?

No. All processing runs in your browser. Your AIFF files never leave your device.

Yes, completely free with no account needed.

Images Tool Box

Conversion

AIFF to MP3 Converter Online Free

Convert Apple AIFF audio files to MP3 to reduce file size and improve compatibility. AIFF is a lossless format common in Mac audio workflows and GarageBand exports. A 5-minute AIFF file can be over 50MB. Converting to MP3 brings it down to 5-10MB.