Video & audio converter
MP3 to WAV Converter
Turn MP3 files into uncompressed 16-bit WAV for audio editors, DJ software or apps that refuse MP3. The WAV is several times bigger. Free.
Tested by Thiago · Updated
Free, no sign-up · Sent over HTTPS · Files are deleted from our server automatically after 30 minutes
How to convert MP3 to WAV
- Add your files: drag them into the box above, or click "Choose files".
- Click "Convert to WAV" and wait a few seconds while we process them.
- Download your WAV files. Uploaded files are deleted right away, and converted files are removed from our server after 30 minutes.
Why convert MP3 to WAV?
Many editing programs, DJ tools, samplers and CD-burning apps work best with WAV. Converting MP3 to WAV gives you an uncompressed, universally compatible audio file, so you can edit, cut and process it without adding any further compression losses along the way.
- Your audio editor, DAW or sampler works better with WAV files.
- You are preparing tracks to burn to an audio CD.
- A system, phone line or device requires WAV audio.
How much bigger the WAV gets depends on the MP3
A WAV stores every sample, so its size depends only on the length, sample rate and channels, never on how good the MP3 was. A minute of stereo at 44.1 kHz always takes 10.6 MB, and at 48 kHz it takes 11.5 MB. The MP3, on the other hand, can be small or large depending on its bitrate, which is why the growth varies so much.
- 320 kbps MP3: the WAV is roughly 4.4 times larger.
- 192 kbps MP3: about 7.3 times larger in our test.
- 128 kbps MP3: 11 to 12 times larger in our tests.
- Low-bitrate MP3 such as a 100 kbps recording: close to 14 times larger.
Check what the receiving program or device expects
Editors and DAWs open any standard WAV, so for editing you can use the result right away. Hardware and phone systems are stricter. Some on-hold players, intercoms and samplers accept only one sample rate, or only mono.
This converter writes 16-bit PCM and keeps the sample rate and the number of channels of your MP3. Most music MP3s are 44.1 kHz stereo, which is also the format of an audio CD. If the device you are preparing for needs something else, such as 8 kHz mono, open the WAV in an audio editor and export it with those settings.
Tips for the best result
- Converting MP3 to WAV cannot restore the detail that MP3 compression removed; it prevents further losses while you edit.
- Expect the WAV to be roughly 10 times larger than the MP3.
- When you finish editing, you can convert back with WAV to MP3 to share it.
About these formats
MP3: The most popular audio format. It compresses sound to a small size while keeping good quality, and it plays on any device.
WAV: An uncompressed audio format with full quality. Files are large, which makes WAV the usual choice for editing and music production.
Frequently asked questions
Does WAV sound better than MP3?
A WAV made from an MP3 sounds the same as that MP3. WAV only sounds better when it comes from an uncompressed original recording.
What format of WAV is created?
Standard 16-bit PCM WAV at the original sample rate.
Can I convert several MP3s at once?
Yes, up to 20 files per batch.
Will my WAV be 44.1 kHz and 16-bit?
It will be 16-bit. The sample rate is copied from the MP3: a 44.1 kHz MP3 gives a 44.1 kHz WAV and a 48 kHz MP3 gives a 48 kHz WAV.
Are the song title and artist kept?
Yes, the text tags of the MP3 are written into the WAV. The cover picture embedded in the MP3 is not copied.
How long can the MP3 be?
Each file can be up to 100 MB, which is about 72 minutes for a 192 kbps MP3. Keep in mind that one hour of stereo WAV at 44.1 kHz takes about 635 MB on your disk.