What Is WAV?

How it works

WAV files store raw audio samples in PCM (Pulse Code Modulation) format — the same way a CD stores audio. There is no compression algorithm removing anything. The file is a direct representation of the audio waveform, sample by sample.

This is why WAV files are large: a 3-minute song at CD quality is roughly 30 MB as WAV and 3–5 MB as a 192 kbps MP3. The audio quality is identical to the original recording, which is why professional tools work natively in WAV.

Common uses

• —Audio editing in DAWs (Audacity, Adobe Audition, Logic Pro, Pro Tools)
• —Video production — video editors require or prefer WAV for audio tracks
• —Professional recording and broadcast
• —Game sound design and audio assets
• —Archiving recordings where lossless quality is required

Strengths

• +Lossless — no quality loss at any stage of editing or processing
• +Universally supported by professional audio software
• +No generational quality loss — you can edit and re-save repeatedly without degradation
• +Simple format — low processing overhead for audio tools

Weaknesses

• −Very large files — 5–10x larger than equivalent MP3
• −Not practical for sharing, email, or streaming
• −No compression benefit — FLAC achieves the same quality at half the size

Compatibility

WAV is supported on all major operating systems (Windows, macOS, Linux) and most mobile devices. All professional audio software and DAWs support it natively. It plays in web browsers and most media players. The only practical limitation is file size — web platforms and email services often have upload limits that make sharing large WAV files impractical.

When to use WAV

• —Working in an audio editor, DAW, or video editor that requires uncompressed input
• —Recording or archiving audio at full quality
• —Any workflow where you need to edit and re-save audio without quality loss

When to avoid WAV

• —Sharing or distributing audio — convert to MP3 to reduce file size
• —Uploading to platforms with file size limits
• —If storage space is a concern — FLAC gives you the same quality at roughly half the size

WAV vs FLAC

Both are lossless. The practical difference is file size: FLAC files are typically 40–60% smaller than equivalent WAV files, with identical audio quality. If you are archiving audio for personal use, FLAC is the more efficient choice. If you need software compatibility (some tools don't support FLAC), WAV is safer.