WAV vs MP3 — Uncompressed vs Compressed Audio Explained
WAV is the professional studio standard; MP3 is the universal distribution format. Here is exactly when to use each.
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WAV (Waveform Audio File Format) stores raw, uncompressed PCM audio at full quality. MP3 compresses audio by discarding data the human ear theoretically cannot hear, producing files 10× smaller. The choice between them depends entirely on your use case.
Quality: WAV has zero quality loss — it is the original digital audio. MP3 at high bitrates (192–320 kbps) is transparent to most listeners, but the quality is permanently degraded.
File size: A 1-minute recording at 44.1 kHz stereo is ~10 MB as WAV and ~1–2 MB as MP3. This makes WAV impractical for large music collections or streaming.
Use WAV when:
- Recording audio in a DAW (GarageBand, Audacity, Pro Tools) — always record to WAV
- Mastering audio — processing a WAV file accumulates zero generation loss
- Delivering audio to broadcast, film, or music production professionals
- Creating sound effects for games (game engines expect uncompressed sources)
Use MP3 when:
- Distributing music for download or streaming
- Emailing audio clips (WAV files are often too large for email)
- Maximum device compatibility — MP3 plays everywhere
- Podcast episodes where listeners won't notice the quality difference
Do not convert WAV to MP3 unless you are finished editing. Once you create an MP3, you cannot get the WAV quality back. Keep the WAV master and create an MP3 copy for distribution.
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