Quick answer: To convert MP3 to WAV, add the MP3 files and press Convert to WAV; you get 16-bit PCM WAV files at 44.1 or 48 kHz. Expect about 10 MB per minute of stereo audio, roughly ten times the MP3. The sound is not improved: WAV only stores what the MP3 still contains. Nothing is uploaded.
Some audio editors, samplers, CD burning programs and phone systems want WAV. Turn MP3s into standard 16-bit WAV files here, several at once, without installing anything.
MP3 to WAV at a glance
| Price | Free, no sign-up, no watermark, no daily limit |
|---|---|
| Accepts | MP3 |
| Largest file | 1 GB per file, several files at once |
| Where it runs | In your browser: files are never uploaded |
| Works on | Any modern browser on iPhone, Android, Windows, Mac and Linux |
| Send the result | Download it, or send it free with a link or by email (up to 20 GB) |
How to convert MP3 to WAV
- Choose one or more MP3 files.
- Press Convert to WAV.
- Check the estimated size shown above the button.
- Download the WAV files, as a ZIP if there are several.
Why convert MP3 to WAV?
- Editing: some editors and samplers only import WAV, and editing uncompressed audio avoids a second round of MP3 artefacts when you export again.
- Audio CDs: older burning programs expect WAV files at 44.1 kHz, 16-bit.
- Hardware and systems: DJ gear, phone systems and some games load WAV more reliably than MP3.
WAV is bigger, not better
An MP3 has already thrown away the parts of the sound it judged inaudible. Converting it to WAV stores the decoded result without further loss, but it cannot bring back what the MP3 removed. The file just gets much larger:
| Format | Stereo, per minute |
|---|---|
| MP3 at 128 kbps | about 1 MB |
| MP3 at 320 kbps | about 2.4 MB |
| WAV, 16-bit, 44.1 kHz | about 10 MB |
If you have the original recording, convert that instead of the MP3.
Sample rate and channels
The WAV keeps the MP3's own sample rate (44.1 or 48 kHz) and its channels, as 16-bit PCM, which every program reads. Systems that ask for something unusual, such as 8 kHz mono for a telephone announcement, need a desktop editor like Audacity for that last step. Going the other way? WAV to MP3 makes files ten times smaller.
How this compares
| This tool | Online converters (e.g. Online Audio Converter, Clideo or CloudConvert) | Desktop apps (e.g. Audacity) | |
|---|---|---|---|
| Your file is uploaded | No | Yes, to their servers | No |
| Install or account | None | Account for some features | Install needed |
| Watermark or daily limits | None | Common on free plans | Depends on the app |
Plans of other services change; check their sites. More audio tools.
Frequently asked questions
Does converting MP3 to WAV improve the quality?
No. The WAV sounds exactly like the MP3; it is only stored without compression.
How big will the WAV be?
About 10 MB per minute for stereo at 44.1 kHz, roughly ten times a typical MP3.
What kind of WAV do I get?
16-bit PCM at the MP3's sample rate, usually 44.1 kHz stereo, the most widely accepted WAV format.
Can I convert many MP3s at once?
Yes. Add them all; the WAV files can be downloaded together as a ZIP.
Are my files uploaded?
No. They are decoded and saved in your browser.
Need to send a big file?
Send files up to 20 GB with a download link or by email. Free, no account needed, original quality.
Send large files free