Free MP3 to WAV Converter
Convert MP3 to standard WAV in seconds. Your audio is converted in your browser and never uploaded.
Your audio is converted in your browser and never uploaded to a server.
Your WAV file
Choose an audio file and click Convert to WAV. The result will appear here.
How to Convert MP3 to WAV
Three steps, all in your browser.
Choose an audio file
Pick an MP3 file from your device, or drag it onto the upload box. M4A, OGG and other formats convert too. Nothing is uploaded to a server.
Click Convert to WAV
Your browser decodes the audio and writes it out as a standard 16-bit, 44.1 kHz WAV, usually within a few seconds.
Preview and download
Play the result to check it, then download the WAV file.
Why Use the SonusVid MP3 to WAV Converter
Your File Never Leaves Your Device
Conversion runs entirely in your browser. Your audio is never uploaded to any server.
Free and Unlimited
No sign-in and no credits. Convert as many files as you like.
Standard 16-bit WAV
The output is uncompressed 16-bit PCM WAV at 44.1 kHz, the CD standard, with the original channels. Almost any software opens it.
More Than MP3
MP3, M4A, OGG and other audio your browser can decode, up to 50MB and 8 minutes per file.
Preview Before You Download
The result plays the converted WAV and lists its length, sample rate, channels and file size.
One Click to a Music Video
Once it's converted, take the same song straight into the music video generator without choosing the file again.
WAV vs MP3: Differences and Uses
WAV vs MP3: what's the difference?
WAV is an uncompressed audio format: it stores every sample as it is. A CD-quality stereo WAV (44.1 kHz, 16-bit) takes about 10.6 MB per minute, so a four-minute song is around 42 MB.
MP3 is a lossy format. The encoder throws away detail the ear is unlikely to notice, such as very high frequencies and quiet sounds masked by louder ones, which makes files far smaller: under 1 MB per minute at 128 kbps and about 2.4 MB at 320 kbps.
The trade-off is size against editability. MP3 suits listening, sharing and uploading. WAV suits audio you will keep working on, because editing and exporting it again never adds another round of compression.
When you need a WAV file
Audio editors and DAWs such as Audacity, FL Studio, Ableton and Logic work natively with WAV. Many of them decode an MP3 in the background on import anyway; converting first gives you sample-accurate cut points and avoids the short silence MP3 encoders add at the start of a file, which can throw loops out of time.
Video editors, samplers, hardware devices and some broadcast or distribution platforms also ask for WAV. If you are handing audio to someone for mixing or mastering, or adding it to a sample library, WAV is the format least likely to cause compatibility problems.
If you only want to listen, send a song to a friend or upload it to a website, keep the MP3. A WAV only takes more space.
Does converting to WAV improve quality?
No. The detail an MP3 encoder discarded is no longer in the file, and converting only stores what is left in an uncompressed form. The WAV sounds the same as the MP3 it came from; it is just larger.
What WAV gives you is no further loss. Every time an MP3 is decoded, edited and encoded to MP3 again, a little more detail goes. Edit in WAV and export once at the end, and the only loss is the one that was already there.
If you have the original recording or a lossless file (WAV or FLAC), use that rather than a WAV made from an MP3. This tool writes 16-bit PCM at 44.1 kHz, the CD standard, and keeps the original channels. Most MP3s are already 44.1 kHz, so they are not resampled; a 48 kHz file is converted to 44.1 kHz.
Common Audio Formats Compared
One minute of stereo audio in each format: its size and typical use.
| Format | Compression | Typical use | Size per stereo minute |
|---|---|---|---|
| MP3 | Lossy | Listening, sharing, uploading | 1–2.4 MB |
| M4A (AAC) | Lossy | Apple devices, streaming | 1–1.9 MB |
| FLAC | Lossless, compressed | Lossless archives, hi-fi listening | ~5–7 MB |
| WAV | Uncompressed | Editing, mixing, mastering, video | 10.6 MB |
- Figures assume 44.1 kHz stereo: MP3 at 128–320 kbps, M4A at 128–256 kbps. FLAC size depends on the music.
- This tool writes 16-bit, 44.1 kHz WAV: about 10.6 MB per minute, half that for mono.
MP3 to WAV FAQ
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