Audio tool
Convert MP3 to WAV
This makes your file about ten times bigger, and that is the point: WAV is uncompressed, which is what audio editors, samplers and some broadcast systems want. It does not improve the sound — read on for why.
- 100% free
- No signup
- Batch convert
Drop your MPEG files here
or click to browse from your device
Supports MPEG · Max 200 MB per file · Up to 100 files
You can also paste a copied image with Ctrl+V / ⌘V
- Secure & privateYour files are never shared
- Lightning fastMost images in under a second
- High qualitymozjpeg and libvips under the hood
- Works everywhereAny device, any browser
Input, output and limits
Every figure below is read from the same configuration the server enforces, so this page cannot promise a limit the system will refuse.
- Input formats
- MP3What is MP3?
- Output format
- WAV
- Maximum file size
- 200 MB per file
- Maximum duration
- 60 minutes
- Batch processing
- Yes — several files at once, downloaded as one ZIP
- Price
- Free, with no account and no watermark
- Processing
- On our own server, then deleted automatically
- Engine
- FFmpeg
- File retention
- Upload and result both deleted after 24 hours
Output quality
The MP3 is decoded to 16-bit PCM and written as a plain WAV, preserving sample rate, channel layout and exact length. Nothing is re-compressed, so this step adds no loss of its own — but it also recovers nothing. The output is a faithful, uncompressed container for audio that has already been through lossy compression, which means it will show the same artefacts as the MP3 did, now taking about ten times the disk space. That is worth saying plainly because the conversion is often attempted in the hope of restoring quality. If you need genuinely lossless audio, it has to come from a lossless source: the original recording, a CD rip, or a FLAC.
See what this tool actually did to real files — median size change, speed and sample size, published whichever way the numbers fall.
Common use cases
Importing into an audio editor
Many editors want PCM and will refuse or transcode MP3 awkwardly.
Loading samples into hardware
Samplers and drum machines almost universally expect WAV.
Broadcast and telephony systems
Both commonly specify uncompressed PCM at a fixed sample rate.
Video editing timelines
Uncompressed audio scrubs and edits more smoothly on long projects.
Troubleshooting
- The WAV is enormous
- That is what uncompressed means — about 10 MB per minute in stereo. If size matters, you did not want WAV.
- It sounds exactly the same
- Correct, and expected. Converting to WAV cannot recover what MP3 compression removed.
- My software still will not open it
- Check the sample rate it requires. Some systems demand exactly 44.1 kHz or 48 kHz, and this tool keeps whatever the MP3 had.
Something else went wrong? Tell us what happened — a person reads every report, and that is how this list gets longer.
Privacy and file deletion
- Stored under a random nameUploads have no connection to the file name you sent and are never served from a public directory. This tool accepts files up to 200 MB, several at a time.
- Deleted on a timerUploads are removed within 2 hours and finished results within 24 hours, whichever comes first.
- Nobody looks at themNo one browses uploads, nothing is shared with third parties, and no file is used to train anything. The only thing kept past deletion is the size and timing of the job.
- Encrypted in transitEvery request runs over HTTPS, so the file is encrypted between your device and our server.
Full privacy policyHow the system is builtWhat we measure, and why it is kept
Frequently asked questions
Browse video toolsDoes converting to WAV improve the quality?
No, and this is the single most common misunderstanding about it. MP3 discarded information when it was created, and that information is gone. A WAV made from an MP3 contains exactly what the MP3 contained, stored inefficiently. It will be around ten times the size and sound identical. Anyone telling you otherwise is selling something.
Then why would I want this?
Because plenty of software refuses to work with compressed audio. Audio editors, samplers, some video editing suites, telephone and broadcast systems, and a lot of embedded hardware all want plain PCM. Converting is about compatibility, not fidelity.
What format is the WAV?
16-bit signed PCM, keeping the sample rate and channel layout of the source. That is the most widely compatible WAV variant there is.
Is my file uploaded?
Yes — decoding needs FFmpeg on our server. Stored under a random name, never listened to, deleted within 24 hours.
How long does my video stay on your server?
Your upload and the finished file are both deleted 24 hours after the job starts. This tool accepts files up to 200 mb and 60 minutes long. Nothing is shared with anyone and there is no account for it to be attached to; while a job is live we may open it in our own admin area to check the encode came out clean.