How to convert MP3 to WAV
Drop your MP3 files into the box above, or click Choose files. You can add several at once.
No settings needed: WAV is uncompressed, so the audio is stored exactly as decoded.
Click Convert to WAV. Files are processed on your device; a few minutes of media usually takes seconds.
Download the WAV files one by one, or all at once as a ZIP.
Why convert MP3 to WAV?
Some tools only accept uncompressed audio: many hardware samplers and DJ gear, older video editors, CD burning software, speech and audio analysis tools, and some broadcast systems.
Editing a WAV avoids repeated lossy compression. If you'll process, cut and re-export audio several times, converting to WAV first keeps every export clean.
Your audio is decoded on your device, so unreleased music and private recordings stay with you.
MP3 vs WAV
MP3 is compressed and lossy, so it's small. WAV stores uncompressed PCM samples, so it's about ten times bigger but can be read and edited by anything.
Converting to WAV doesn't restore what MP3 compression removed. It stores the decoded sound exactly, so no further quality is lost.
| Property | MP3 | WAV |
|---|---|---|
| Compression | Lossy | None (uncompressed PCM) |
| Quality | Very good at 192 kbps and above | Exact, bit-for-bit |
| File size | About 1 MB per minute at 128 kbps | About 10 MB per minute of CD-quality stereo |
| Best for | Music and podcasts on any device | Recording, editing and mastering |
| Support | Every player, phone, car and browser | Every audio editor and player |
Is it safe?
Yes. MP3 to WAV runs entirely in your browser. Your files are read and converted by your own device using built-in browser technology, so they are never uploaded to a server and nobody else can see them.
You can check this yourself: open your browser's developer tools, switch to the Network tab and convert a file. No upload requests are made.
Audio is decoded and encoded by your browser, using its built-in media engine and a WebAssembly MP3 encoder. Recordings, voice memos and interviews never leave your device.
Files stay in this tab's memory only until you remove them or close the page.
Frequently Asked Questions
Will WAV sound better than the MP3?
No. The WAV contains exactly what the MP3 decodes to. Its advantage is compatibility and avoiding further quality loss when you edit.
Why is the WAV file so big?
WAV is uncompressed. CD-quality stereo takes about 10 MB per minute, around ten times the size of a typical MP3.
What format is the WAV?
Standard 16-bit PCM at the MP3's original sample rate (usually 44.1 or 48 kHz), which every editor, DAW and player can open.
Can I use the WAV for an audio CD?
Yes. CD burning software accepts WAV. Audio CDs use 44.1 kHz, which is what most MP3s already use.
Is there a file size limit?
Each file can be up to 500 MB. Files are read from disk in small pieces, so long recordings don't need to fit in memory.