WAV to MP3 Converter
Compress a bulky WAV recording into an MP3 you can email or upload.
Up to 50 MB per file. Sign up free to convert files up to 100 MB.
| File name | Size | Convert to |
|---|
Checking files and selected output formats.
What to expect when converting WAV to MP3
A 30 MB WAV (3-minute song) typically becomes 3 – 5 MB as MP3 at 192 kbps.
Quality: Lossy, at 192 kbps or higher, most listeners cannot tell the difference from the WAV source.
Best for: sharing audio, podcasts, music players, anywhere file size matters.
Avoid when: archival or further editing, keep the WAV master.
Tip: 320 kbps is the maximum MP3 quality and matches AAC at ~256 kbps. For most listening, 192 kbps is the sweet spot.
WAV to MP3 - Studio audio, sized for sharing
CD-quality WAV runs about 10 MB a minute, which is fine on a drive and impossible in an email. At 128 kbps that same minute is roughly 1 MB. This is the step between finishing a recording session and actually publishing it as an episode, sending it to someone, or putting it away. For most listeners 320 kbps is indistinguishable from the source; 192 kbps is a sensible middle ground.
WAV to MP3: compressing raw audio
WAV stores uncompressed PCM audio, every sample value is recorded at full precision (typically 44.1 kHz, 16-bit stereo = 1,411 kbps). MP3 uses psychoacoustic modeling to identify and discard audio information below the masking threshold, reducing the bitrate to 128-320 kbps. The LAME encoder applies a modified DCT (MDCT), quantizes frequency bands according to the psychoacoustic model, and Huffman-encodes the result. A 50 MB WAV song becomes 4-10 MB as MP3.
Convert WAV to MP3 for portable music libraries, podcast distribution, web audio embedding, and any scenario where the 10× file size reduction outweighs the theoretical quality difference. Use 320 kbps for critical listening, 192 kbps for general use, and 128 kbps for speech content where fidelity is less important.
WAV vs MP3: Side-by-side
Technical comparison of the two formats, useful for deciding which to use, or for confirming what changes during conversion.
| Property | WAV | MP3 |
|---|---|---|
| Full name | Waveform Audio File Format | MPEG-1 Audio Layer III |
| Year introduced | 1991 | 1993 |
| Developer / standard body | IBM / Microsoft | Fraunhofer / MPEG |
| MIME type | audio/wav | audio/mpeg |
| File extension | .wav | .mp3 |
| Compression | Uncompressed PCM (typically) | Lossy (MDCT) |
| Color / data depth | N/A (audio) | N/A (audio) |
| Max dimensions / size | 4 GB file size limit (RIFF) | Up to 320 kbps bitrate |
| Transparency | No | No |
| Animation | No | No |
| Standard / specification | Microsoft RIFF | ISO/IEC 11172-3 |
| Best for | Studio recording, raw audio, professional editing | Universal audio compatibility, playable on every device |
Use WAV when
- You're editing in a DAW (Ableton, Logic, Pro Tools)
- You're mastering audio and need bit-perfect quality between edits
- You're archiving master recordings
- You need multiple generations of edits without quality loss
Use MP3 when
- You're distributing a podcast, song, or audio to end users
- File size matters (uploads, mobile, storage)
- The audio won't be edited further
- You want the widest possible playback compatibility
Use WAV during production, ship MP3. The workflow: record and edit in WAV to preserve quality across every edit, then export MP3 for distribution. If someone asks for "the original audio," they usually mean WAV. If they ask for "the podcast," they mean MP3.