Convert MP3 to WAV
Some editing software, phone systems and measurement tools require uncompressed WAV. Converting MP3 to WAV gets the file ready for editing, with no extra loss on later saves.
Free · no sign-up · your file is processed in your browser and never sent to a server
No file handy? Try it with a 20-second Turkish meeting recording.
How to use
- Choose your MP3 fileDrop one or more MP3 files. On this page the tool only accepts MP3; for other formats, use the audio converter.
- Pick the qualityWAV is written losslessly; turn on mono if you need a single channel.
- Convert and downloadFiles are processed one after another; each finished file comes with its own download link.
MP3 and WAV at a glance
| MP3 | WAV | |
|---|---|---|
| Codec | MPEG Layer III | PCM (uncompressed) |
| Type | Lossy | Uncompressed |
| Approx. size | 128 kbps: ~1 MB/min · 320 kbps: ~2.4 MB/min | 44.1 kHz / 16-bit stereo: ~10 MB/min |
| Typical source | Music libraries, podcasts, recorder apps, almost every device | Field recorders, exports from studio and editing software, music ripped from CDs |
Why convert?
- An editing or phone system that requires WAV
- Editing and re-saving audio many times
- Bringing audio into measurement and analysis software
Common issues with MP3 files
- File size: WAV is uncompressed; one minute of stereo takes about 10 MB.
- Quality doesn't come back: Detail discarded by MP3 isn't restored by converting to WAV; there's just no extra loss in later processing.
- Systems that need a single channel: Turn on mono. The sample rate stays the same as the source.
Privacy: your file never leaves your device
Everything happens in your browser. Your file is not sent to Voiser's servers or stored anywhere, and it's cleared from memory when you close the tab. That's also why the tool stays fast on a slow connection.
Common questions
Does converting MP3 to WAV improve quality?
No. WAV preserves the quality but doesn't restore what MP3 compression removed. The benefit is that no new loss happens while you edit.
What settings is the WAV written with?
16-bit PCM at the same sample rate as the source. Single channel if mono is on.
Is it suitable for a phone system (IVR)?
It produces mono WAV. If your system needs a specific sample rate such as 8 kHz, check its setup guide; this tool keeps the source sample rate.
Is my file uploaded to a server?
No. Your MP3 file is converted in your browser; it isn't sent to Voiser or anywhere else, and it isn't stored.
Related tools
- Audio converterConvert files between MP3, WAV, M4A, OGG and FLAC.
- Extract audio from videoSave the audio track of your own videos as MP3, M4A or WAV.
- MP3 cutter and audio trimmerSelect any part of an audio file on the waveform and cut it out.
- Audio joinerMerge several audio files into one, in the order you choose.
Turn your converted recording into text.
Transcription turns speech into time-stamped text with separate speakers. Start with a free account.