Free online WMA to VOX converter

Source format: WMA

WMA stands for Windows Media Audio, a compressed audio format developed by Microsoft. It is commonly used on Windows systems, in older media libraries, and in files distributed through Microsoft-based software or devices. WMA can be either lossy or lossless, but the most common use is lossy audio for music, voice, and general playback.

Typical uses include music collections, archived audio from older Windows applications, and audio files that need relatively small file sizes. Because it is a Microsoft format, WMA support is strongest in Windows media players and software that includes Windows codec support.

Target format: VOX

VOX is a raw, highly compressed audio format most often associated with Dialogic ADPCM audio. It is commonly used for voice recordings, telephony, call-center systems, and other speech-focused applications where small file size matters more than high fidelity. VOX files usually contain little or no metadata and are often used in specialized software rather than general music players.

The main advantages of VOX are its small size and suitability for speech storage and transmission. Its limitations are equally important: it is not a general-purpose music format, and playback support is much narrower than for common formats such as MP3 or WAV.

How to perform the conversion

The most reliable way to convert WMA to VOX is to use desktop audio software that can decode WMA and export VOX, or to convert through an intermediate uncompressed format if direct export is not available. A practical workflow is:

1. Open the WMA file in an audio editor or converter that supports both formats.
2. If the program does not offer direct VOX export, first convert the file to WAV or another uncompressed PCM format.
3. Then export or save the audio as VOX using the appropriate codec or format option.
4. Verify the result by opening the VOX file in the target application or player.

In many cases, Audacity can open WMA files if the required import support is available on your system, and it can export to formats supported by installed codecs or plugins. Some specialized audio tools and telephony-oriented converters may provide more direct VOX support. If you are using a desktop converter, look for menu paths such as File → Open to load the WMA file and File → Export or File → Save As to create the VOX file.

You can also convert the file on 101convert.com for free, without installing any software.

Notes on quality and compatibility

WMA to VOX is usually a lossy-to-lossy conversion, which means some audio quality can be lost during the process. This is especially noticeable if the source is music rather than speech. VOX is best suited to voice recordings, so converting songs or complex audio from WMA may produce poor results.

Compatibility is another important limitation. VOX support is much less common than support for WMA, MP3, or WAV. Before converting, make sure the destination software or device actually expects VOX and uses the correct VOX variant. In some workflows, the file extension alone is not enough; the receiving system may require a specific ADPCM encoding or sample rate.

If preserving quality matters, keep an original copy of the WMA file and consider converting from a higher-quality source such as WAV instead of repeatedly re-encoding compressed audio.