AIFF vs WAV: Differences, Compatibility, and Which to Choose

AIFF and WAV sound identical. Both are uncompressed PCM audio formats that preserve every sample from the original recording. The differences come down to metadata handling, platform compatibility, and file structure -- not audio quality.

Audio Quality

There is zero quality difference between AIFF and WAV when both use the same sample rate and bit depth (typically 44.1 kHz / 16-bit for CD audio, or 48 kHz / 24-bit for studio work). The raw PCM data inside each file is bit-for-bit identical. If someone tells you one sounds better than the other, they are wrong or testing different source material.

File Size

Same content, same size. A 4-minute stereo track at 44.1 kHz / 16-bit takes roughly 40 MB in either format. The only size difference comes from metadata: AIFF files can carry album art, lyrics, and custom tags that add a few kilobytes. WAV metadata support is more limited, so the header overhead is slightly smaller.

Metadata and Tagging

This is the biggest practical difference. AIFF uses Apple's IFF chunk structure and supports rich metadata natively: track title, artist, album art, comments, and custom fields. WAV uses Microsoft's RIFF format and has basic metadata support through INFO and ID3 chunks, but many audio apps ignore or strip WAV metadata. If you organize large music libraries and need embedded tags, AIFF handles this better.

Compatibility

WAV works on essentially every audio device and operating system: Windows, macOS, Linux, Android, iOS, car stereos, DJ controllers, DAWs, and web browsers. AIFF works on macOS and iOS natively and is supported by most professional DAWs (Pro Tools, Logic, Ableton). However, some Windows media players, older Android devices, and web browsers handle AIFF poorly or not at all. If you share files with people on mixed platforms, WAV is the safer pick.

When to Use Each

• AIFF: Mac-based music production, DJ sets with Apple hardware, audio libraries where embedded metadata matters.
• WAV: Cross-platform collaboration, Windows-based workflows, web audio, maximum device compatibility.
• Neither: If file size is a concern, use FLAC instead -- same quality, 30-50% smaller files.

If you need to convert audio formats or reduce file sizes, our audio compressor handles both AIFF and WAV input. The WAV to MP3 converter is useful when you need smaller files for sharing.

Related reading: AIFF vs MP3 covers the uncompressed vs compressed tradeoff, FLAC vs ALAC compares lossless compressed alternatives, and audio bitrate explained covers how compression settings affect quality.