Free online W64 to WMA converter

Source format: W64

W64 is an audio container format associated with Wave64, a Sony-developed extension of the standard WAV format. It was designed to overcome the 4 GB size limit of classic RIFF/WAV files by using 64-bit file addressing.

W64 is used mainly in professional audio production, recording, editing, and archiving when very large uncompressed audio files are needed. It typically stores PCM audio and is valued for its simplicity and lossless quality, but it is not as widely supported as standard WAV.

Target format: WMA

WMA stands for Windows Media Audio, a compressed audio format developed by Microsoft. It is commonly used for smaller file sizes while keeping acceptable audio quality, especially in Windows-based workflows and legacy media libraries.

WMA is useful for music playback, portable devices, streaming, and storage-efficient distribution. Compared with uncompressed formats like W64, it offers much better compression, but it is lossy in most common profiles, so some audio detail is discarded during conversion.

How to perform the conversion

The most reliable way to convert W64 to WMA is with a desktop audio tool that supports both formats, such as FFmpeg or Audacity with the proper export support. If you want a simple browser-based option, you can convert the file on 101convert.com for free without installing any software.

Using FFmpeg is usually the best choice for accuracy and batch conversion:

1. Install FFmpeg on your computer.
2. Open a terminal or command prompt in the folder containing the W64 file.
3. Run a command such as ffmpeg -i input.w64 -c:a wmav2 output.wma.
4. Wait for the conversion to finish, then play the resulting WMA file to verify it.

If you prefer a graphical workflow, use an audio editor or converter that can open W64 and export WMA:

1. Open the W64 file in the program.
2. Choose File → Export or File → Save As.
3. Select WMA as the output format.
4. Adjust bitrate or quality settings if available.
5. Save the converted file.

When using Audacity, the exact export option depends on installed codecs and platform support. In many cases, FFmpeg remains the most dependable method for this specific conversion.

Notes on quality, compatibility, or limitations

W64 is usually lossless, while WMA is typically lossy. That means converting from W64 to WMA will reduce file size, but it will also reduce audio fidelity. For archival or editing purposes, keep the original W64 file.

Compatibility is another important factor: WMA support is strongest on Windows and may be limited in some modern players and devices. If broad compatibility is important, you may want to consider other output formats such as MP3 or AAC instead.

Because W64 files can contain high-resolution or multichannel audio, make sure the chosen WMA encoder settings match your needs. Very high sample rates or channel counts may be downmixed or resampled depending on the encoder and player support.