WMA to OGG
Convert WMA audio to OGG Vorbis โ right in your browser, 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 was everywhere on Windows PCs a decade ago. The trouble is that almost nothing outside Windows plays it: iPhones, most Android music apps and car stereos simply skip the file. OGG Vorbis is the opposite kind of format - open, patent-free and widely used by games, Spotify and open-source software. This converter turns WMA into OGG entirely inside your browser using a WebAssembly build of FFmpeg, so your files are never uploaded anywhere. It is free, needs no signup, handles several files in one batch, and lets you pick a bitrate from 96 to 320 kbps (192 is the default). Each finished track gets a preview player and a Download button.
Frequently Asked Questions
How do I convert WMA to OGG?
To convert WMA to OGG, set the Bitrate dropdown above the drop area to the quality you want (96k, 128k, 192k is the recommended default, 256k or 320k), then drag your WMA files onto the drop area or click it to choose them. Conversion to OGG starts automatically, right in your browser. Set the bitrate before you add files, because it is read at the moment each file is converted. You can add several WMA files at once and they are processed one after another, each finishing as a row that shows the new filename, its size, an inline preview player and a Download button. Everything runs locally through a WebAssembly build of FFmpeg, so your audio is never uploaded to a server.
Why won't my WMA files play on my iPhone or in my car?
WMA is Microsoft's own audio format, and support for it barely exists outside Windows. iPhones, most Android music apps, car stereos and USB media players were never built to decode it, so they either skip the track or show an error. Converting to a widely supported format like OGG is the usual fix. OGG Vorbis is open and patent-free, so it is decoded by a very broad range of software players, games and open-source tools. If your target is specifically an iPhone or a car head unit, MP3 or M4A is the safer choice, since OGG support on those devices is not guaranteed.
Will converting WMA to OGG reduce the audio quality?
Some quality is lost, because both WMA and OGG are lossy formats and re-encoding always discards a little more data. The loss is usually hard to notice at a decent bitrate, but it cannot be undone, and converting to OGG can never restore detail the original WMA encode already threw away. Choosing a bitrate at or above your source WMA's bitrate keeps the difference minimal. If you want the smallest audible change, pick 256 or 320 kbps; the file gets bigger but the re-encode is far more forgiving.
Which bitrate should I choose for the OGG file?
192 kbps is the default and it suits almost everything - music, podcasts and general listening. Pick 256 or 320 kbps when you want the re-encode to stay as close to the source WMA as possible, and 96 or 128 kbps when the file is speech or you need it to be as small as possible. Remember that a high bitrate cannot add quality back to a lossy WMA source; it only avoids adding more loss on top. There is little point picking 320 kbps for a WMA that was encoded at 64 kbps.
Is this WMA to OGG converter really free and private?
Yes. It is completely free with no signup, no account, no watermark and nothing to install, and it is private because your audio never leaves your device - the conversion runs inside your own browser using WebAssembly, so no file is ever uploaded to a server. That makes it safe for confidential recordings such as interviews, lectures, meeting notes or voice memos. Nothing is queued or stored on our side, because the file simply never gets there.
Is there a file size limit?
There is no size limit imposed by the site, because your WMA file is never uploaded - the only real limit is how much memory your device can spare. There is also no upload wait and no queue, so a track starts converting the moment you drop it in. Very large files, roughly over a few hundred megabytes, can be slow or run out of memory on a phone. For long recordings such as full lectures or DJ sets, use a desktop browser.
Does this work on Mac, Android and Linux?
Yes. The converter runs in any modern browser on Windows, Mac, Linux, iPhone and Android, so you can convert WMA to OGG on a Mac without installing Windows Media software, or on a phone with nothing but the browser you already have. The only practical caveat is memory: phones and tablets handle short files fine but can struggle with very long recordings. There is nothing to download or install on any platform beyond the one-time cached converter.