MP3 to WAV Converter
Convert MP3 to WAV online for free: nothing to install, no watermark, files encrypted in transit and deleted automatically after conversion.
Drag & drop your MP3 file here, or
How to convert MP3 to WAV in 3 steps
- 1
Upload your MP3 file
Drag and drop or select the MP3 file you want to convert.
- 2
Choose WAV as output
The output format is pre-selected for you — just confirm and start the conversion.
- 3
Download your file
Once processing finishes, download your converted WAV file instantly.
Converting MP3 to WAV: what to know
When you need it
Some audio editors, CD burning tools, phone systems, hardware samplers and transcription services require WAV. Converting an MP3 gives you a file they accept.
What to expect
The MP3 is decoded to uncompressed WAV, about ten times larger. It sounds exactly like the MP3: converting can't restore detail that MP3 compression removed, but it does prevent further losses while you edit.
Tip: If the audio is only for listening, keep the MP3. WAV makes sense when software requires it or when you are about to edit the sound.
MP3 vs WAV: what is the difference?
| MP3 | WAV | |
|---|---|---|
| Full name | MPEG-1 Audio Layer III | Waveform Audio File Format |
| Type | Compressed audio | Uncompressed audio |
| Compression | Lossy | None |
| Developed by | Fraunhofer IIS / MPEG | Microsoft & IBM |
| File extension | .mp3 | .wav |
What is MP3?
MP3 is the classic compressed audio format. It removes sounds the ear barely notices to shrink files to roughly a tenth of CD size, and it plays on every phone, car stereo and music app, which is why it remains the default for music and podcasts.
What is WAV?
WAV stores audio as uncompressed PCM, exactly as it was recorded. That makes it the standard for recording, editing and mastering, where no quality can be lost, but a WAV file is about ten times larger than the same audio in MP3.
Tips for converting MP3 to WAV
- Converting a compressed file such as MP3 to a lossless format does not restore detail already removed; it only makes the file larger.
- For music, a lossless source (WAV or FLAC) gives the best result when you convert to WAV.
- Check that your player, car stereo or editing app supports WAV before converting a whole library.
- Keep the original MP3 file as a backup until you are happy with the converted audio.
Frequently asked questions
- How do I convert MP3 to WAV online?
- Upload your MP3 file above, select WAV as the output format, and click Convert. ConvertFastHub processes the file in the cloud and gives you a download link — no software installation required.
- Is it free to convert MP3 to WAV?
- Yes. Free accounts get 10 conversions every 24 hours with files up to 50MB. For unlimited conversions, larger files up to 1.5GB, and priority processing, upgrade to ConvertFastHub Pro.
- Is my file safe when I convert it?
- Files travel over an encrypted connection, are scanned automatically for malware (files up to 200 MB), are processed in an isolated worker and are deleted automatically: after 1 hour without an account, 24 hours with a free account, or 7 days with Pro.
- Can I convert MP3 to WAV on my phone?
- Yes. The converter runs in the browser and the work happens on our servers, so it works the same on Android, iPhone, tablets and computers — there is no app to install.
- Do I need an account?
- No. You can convert without signing up; results are then kept for 1 hour. A free account keeps them for 24 hours and shows your conversion history.