Convert MP3 to WAV
Convert to the WAV format required by audio editors, professional equipment and some transcription services. For transcription inside your browser, the same author's Transcriber accepts MP3 as it is.
Settings
How to use
- 1
Add audio or video
MP3, WAV, M4A, FLAC and other audio files, or video files such as MP4 and MOV to extract the audio from.
- 2
Choose format and bitrate
Pick MP3, M4A, WAV, AAC, OGG, OPUS, FLAC or AIFF. You can also downmix to mono or change the sample rate.
- 3
Convert and save
Press Run. Multiple files are processed in turn and can be saved together as a ZIP.
Why convert back to WAV
Converting MP3 to WAV does not restore the quality lost in MP3 encoding. But WAV is uncompressed, so repeated editing and saving adds no further loss, and virtually every device and program can open it.
The file becomes about ten times larger: an hour of MP3 (about 80 MB) is about 600 MB as WAV.
Frequently asked questions
Will quality improve?
No. Components removed by MP3 do not come back; the file simply stops degrading further.
Can I set the sample rate or mono?
Yes. 16 kHz mono produces a compact WAV suited to transcription.
Is it 16-bit?
Yes. Output is 16-bit PCM, the most widely compatible variant.
Do large files work?
Yes. Conversion streams the file, so long MP3s do not exhaust memory.
Help us improve the service
If a conversion fails, sending us the circumstances helps us track down the cause. Knowing which devices and formats fail most often, and how long processing takes, lets us revise the supported formats and fix the bugs behind them. If you don't mind, leaving this on is a real help.
What is sent
The tool you used and the settings you chose (output format, quality, etc.), your device specs (GPU, memory, core count), the input format with a rough size, how many files succeeded or failed and how long it took, and the error type and details when something fails.
What is never sent
The files themselves, file names, text, subtitles or prompts you add to a video, and IP addresses. The data goes only to this site's own server, never to a third-party service.