WAV vs MP3
| Property | WAV | MP3 |
|---|---|---|
| Full name | Waveform Audio File Format | MPEG-1 Audio Layer III |
| File extensions | .wav, .wave | .mp3 |
| Created by | Microsoft and IBM | Fraunhofer IIS and MPEG |
| Introduced | 1991 | 1993 |
| Compression | Usually none: uncompressed PCM | Lossy |
| Codecs inside | PCM, typically 16-bit at 44.1 or 48 kHz | MP3, usually 128–320 kbps |
| Typical size | About 10 MB per minute at CD quality | About 1 MB per minute at 128 kbps, 2.4 MB at 320 kbps |
| Opens on | Every computer, phone and audio editor | Every phone, computer, car stereo, speaker and app |
| Best for | Recording, editing and archiving master audio | Music and podcasts that must play anywhere |
Why convert WAV to MP3?
WAV is what recorders, DAWs and sound libraries produce: uncompressed and perfect for editing, but too big to email, upload to most sites or keep thousands of on a phone. MP3 is the universal way to share finished audio. Podcast hosts, music distributors' previews, voicemail systems and car stereos all take it.
Choosing the bitrate is the only real decision. 320 kbps is the highest MP3 quality and about a quarter of WAV's size. 192 kbps is transparent for most music on most equipment. 128 kbps is fine for speech, and mono 64–96 kbps is enough for voice memos and lectures. If the WAV is 24-bit or 96 kHz studio audio, MP3 will reduce it to what it can store; keep the WAV as your master.
Encoding runs in a background thread with the browser's own MP3 encoder or a built-in one, so long files do not freeze the page. To cut silence or a section before converting, use the Audio Trimmer.