MP3 vs WAV
How do MP3 and WAVcompare? Here's everything you need to know to choose the right format — and how to convert between them.
.mp3
Full guide →MPEG Audio Layer III
MP3 is the most popular audio format in the world. It revolutionized digital music by compressing audio files to a fraction of their original size while maintaining good quality. Nearly every device and application supports MP3.
.wav
Full guide →Waveform Audio File Format
WAV is an uncompressed audio format that stores raw audio data at full quality. It's the standard format for professional audio editing, music production, and any application where quality is paramount.
| Specification | MP3 | WAV |
|---|---|---|
| Full name | MPEG Audio Layer III | Waveform Audio File Format |
| Extension | .mp3 | .wav |
| MIME type | audio/mpeg | audio/wav |
| Category | Audio | Audio |
| Developer | Fraunhofer Society / Moving Picture Experts Group | Microsoft / IBM |
| Year introduced | 1993 | 1991 |
| Compression | Lossy | Lossless |
MP3 advantages
- Universal compatibility — works everywhere
- Excellent compression ratios
- Metadata support (ID3 tags)
- Variable and constant bitrate options
MP3 limitations
- Lossy compression — some quality loss
- Not suitable for professional audio production
- Patent-encumbered (patents expired 2017)
- Inferior quality to modern codecs at same bitrate
WAV advantages
- Lossless — full audio quality preserved
- Industry standard for audio production
- Simple format — fast to process
- Universal support on all platforms
WAV limitations
- Very large file sizes
- No compression
- No metadata support in basic format
- Not practical for streaming or sharing
Which should you use?
MP3 is practical for everyday listening with good compression. WAV is essential for professional audio work where every detail matters.
Best uses for MP3
Best uses for WAV
Convert between MP3 and WAV
Need to switch formats? Convert for free with SquishConvert.