WMA to WAV
Convert WMA audio to uncompressed WAV, right in your browser, with nothing uploaded.
Drag & drop your WMA files here, or click to choose. Everything runs in your browser — nothing is uploaded.
WMA (Windows Media Audio) is Microsoft's lossy audio format, and it works beautifully on Windows and almost nowhere else. Most iPhones, Android music apps and car stereos simply refuse to open a .wma file, so people convert it. WAV is the opposite: uncompressed PCM audio that every device, editor and player understands, which also makes it the format most audio editing software expects to import. This converter runs a WebAssembly build of FFmpeg entirely inside your browser, so your files are never uploaded to a server. Drop in one file or a whole batch, and they convert one after another. Each finished track gets a preview player and a Download button. WAV is lossless, so there is no bitrate to choose, and it is completely free, with no signup.
Frequently Asked Questions
How do I convert WMA to WAV?
To convert WMA to WAV, drag your WMA files onto the drop area on this page - or click it to browse - and conversion starts automatically; the output is fixed to WAV, so there is no format to choose and no convert button to click. You can add several files at once, and they are converted one after another. Each finished file appears as a row showing its new filename, its size, an inline preview player, and a Download button. Everything runs in your browser through a WebAssembly build of FFmpeg, so nothing is uploaded.
Does converting WMA to WAV improve the sound quality?
No. WMA is a lossy format, so detail was already discarded when the file was first encoded, and converting to WAV cannot bring any of it back. What WAV gives you is a lossless file from that point on, meaning the audio will not degrade further through editing or re-saving. That is genuinely useful if you plan to edit the recording, but it will not make a low-bitrate WMA sound better than it already does.
Why is the WAV file so much larger than the original WMA?
Because WAV stores uncompressed PCM audio, roughly 10 MB per minute for CD-quality stereo, while WMA compresses that same audio down to a small fraction of the size. A ten-minute WMA of a few megabytes can easily become a WAV of around 100 MB, and that is expected rather than a fault. If you want a lossless file without the bulk, FLAC holds the same audio at roughly 50-60% of WAV's size.
Is this WMA to WAV converter free, and are my files private?
It is completely free with no signup, no account and no watermark, and your files stay private because they are never uploaded anywhere. The conversion happens entirely inside your browser using a WebAssembly build of FFmpeg, so the audio never leaves your device and no server ever receives it. That makes it safe for confidential recordings such as interviews, lectures, voice notes or legal audio.
Is there a limit on file size or how many WMA files I can convert?
There is no size limit and no queue imposed by the site, because nothing is uploaded - the only real ceiling is how much memory your device can spare. You can also drop in a batch of WMA files and they will convert one after another instead of you doing them by hand. WAV output is large, so very long recordings can be slow or exhaust memory on a phone; a desktop browser handles those far better.
Why won't my WMA file play on my iPhone or car stereo?
WMA is Microsoft's own format and support for it barely exists outside Windows, so most iPhones, Android music apps and car stereos have no decoder for it and will either skip the file or show an error. Converting to WAV fixes that, because WAV is understood essentially everywhere. If storage on the device matters more than universal playback, MP3 or AAC will be far smaller while still playing almost anywhere.
Do I need to choose a bitrate when converting WMA to WAV?
No. WAV is uncompressed, so there is no bitrate setting to pick - the converter simply writes out the decoded PCM audio as it is. Bitrate options from 96 up to 320 kbps only appear when your output is a lossy format such as MP3, AAC, M4A or OGG, where the compression level is an actual choice. The same applies to the other lossless outputs, FLAC and AIFF.