MP3 to WAV Converter
Decode an MP3 to uncompressed WAV for editing, mastering or CD authoring.
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 MP3 to WAV
A 4 MB MP3 (3-minute song at 192 kbps) typically becomes 30 – 35 MB as 16-bit/44.1 kHz WAV.
Quality: WAV is lossless but cannot recover quality lost in MP3 encoding, the conversion preserves whatever the MP3 contains.
Best for: audio editing in studio software, archival, hardware that requires WAV (some DJ controllers).
Avoid when: you only need to play the file, MP3 is universally supported and far smaller.
Tip: Converting MP3 to WAV does not improve audio quality. To get truly lossless audio you need a lossless source (FLAC or the original master).
MP3 to WAV - Uncompressed audio for editing and production
Audio editors want WAV. Logic, Ableton, Pro Tools and GarageBand all work in it natively, and handing them an MP3 just makes them decode it on the way in. Be clear about what this does and does not do: the quality the original MP3 compression threw away is gone, and converting cannot bring it back. What you get is a file 10-15× larger that still sounds like its source.
MP3 to WAV: decompressing for editing
WAV stores uncompressed PCM audio, raw sample values at a fixed sample rate (typically 44.1 kHz) and bit depth (typically 16-bit). MP3 stores a compressed representation that discards inaudible information. Converting MP3 to WAV decodes the MP3 back to PCM samples, producing a much larger file (typically 10× the MP3 size) with the same audible quality. The WAV cannot recover information the MP3 encoding discarded, but it gives audio editors a format they can process without codec overhead.
Convert MP3 to WAV for editing in DAWs (Audacity, Logic, Pro Tools, Ableton), burning audio CDs (Red Book standard requires PCM/WAV), DJ software that prefers uncompressed input, or any professional audio workflow where re-encoding artifacts accumulate over multiple saves.
MP3 vs WAV: Side-by-side
Technical comparison of the two formats, useful for deciding which to use, or for confirming what changes during conversion.
| Property | MP3 | WAV |
|---|---|---|
| Full name | MPEG-1 Audio Layer III | Waveform Audio File Format |
| Year introduced | 1993 | 1991 |
| Developer / standard body | Fraunhofer / MPEG | IBM / Microsoft |
| MIME type | audio/mpeg | audio/wav |
| File extension | .mp3 | .wav |
| Compression | Lossy (MDCT) | Uncompressed PCM (typically) |
| Color / data depth | N/A (audio) | N/A (audio) |
| Max dimensions / size | Up to 320 kbps bitrate | 4 GB file size limit (RIFF) |
| Transparency | No | No |
| Animation | No | No |
| Standard / specification | ISO/IEC 11172-3 | Microsoft RIFF |
| Best for | Universal audio compatibility, playable on every device | Studio recording, raw audio, professional editing |
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 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 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.