When you need WAV instead of MP3
MP3 is the best format for listening and sharing, but some jobs need uncompressed audio:
- Editing. Audio and video editors work best with WAV, and repeated MP3 saves add up to audible loss.
- Burning an audio CD. Many burning tools want WAV files at 44.1 kHz.
- Apps and hardware that only take WAV, such as some samplers, DJ gear, telephone systems, game engines and broadcast tools.
- Sound effects and alerts for apps and websites that specify WAV.
How to use it
Choose your MP3 files or drop them on the box above. Each is decoded and written as WAV on your device, with a download button. The note next to each result shows the length and format.
What the WAV contains
- Format: PCM, the plain, universal kind of WAV.
- Bit depth: 16-bit, CD quality.
- Sample rate: 44.1 kHz. MP3s recorded at 48 kHz are resampled to 44.1 kHz.
- Channels: mono stays mono, stereo stays stereo.
- Length: identical to the MP3. Encoder padding at the very start of some MP3s, a few milliseconds of silence, is decoded as part of the audio, as in most players.
Quality expectations
Converting doesn’t restore quality: a WAV made from a 128 kbps MP3 still sounds like a 128 kbps MP3. What WAV gives you is a stable copy that won’t degrade further as you edit, mix and export. If you have the original recording or a lossless file such as FLAC, start from that instead.
Storage
WAV files are large. A 4-minute song becomes about 40 MB. Convert only the files you need for the job, and keep the MP3s for everyday listening.
Privacy
Your files are decoded by your browser’s own audio engine and written as WAV locally. Nothing is uploaded, and closing the page clears everything from memory.
Questions
Does converting MP3 to WAV improve the sound?
No. Detail removed when the MP3 was made can't be restored. The WAV sounds exactly like the MP3; it just stores that sound uncompressed, so it won't lose any more quality when you edit and save it.
Why is the WAV file so big?
WAV is uncompressed. Each minute of stereo audio takes about 10 MB, around seven to ten times the size of the MP3.
What format is the WAV?
Standard PCM WAV at 16-bit, 44.1 kHz, the same as an audio CD. It opens in every audio editor, DAW, video editor and CD-burning app.
Can I convert several MP3s at once?
Yes. Choose or drop as many as you like and download them one by one or together as a ZIP.
Last reviewed 31 October 2026