Free online W64 to MKA converter

Source format: W64

W64 is an audio file format based on the Wave64 specification, created by Sony to overcome the size limits of standard WAV files. It is used mainly in professional audio production and digital audio workstations when recordings may exceed 4 GB. Like WAV, it typically stores uncompressed PCM audio, but it supports much larger files and is better suited for long recordings, multichannel sessions, and high-resolution audio.

Target format: MKA

MKA is the Matroska audio container format. It is designed to store audio tracks in a flexible, modern container that supports multiple codecs, metadata, and chapter information. MKA is commonly used for archiving audio, storing lossless music, and packaging audio streams from video sources. Its main advantages are good compatibility with Matroska-aware players, support for advanced metadata, and efficient handling of compressed or lossless audio.

How to perform the conversion

The most practical way to convert W64 to MKA is to use FFmpeg, which can read W64 audio and write it into an MKA container. Because MKA is only a container, you choose the audio codec during conversion. If you want to preserve quality, use a lossless codec such as FLAC inside MKA.

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 flac output.mka to create a lossless MKA file.
4. If you want to keep the audio uncompressed, you can use ffmpeg -i input.w64 -c:a pcm_s24le output.mka for 24-bit PCM, or another PCM variant that matches your source.
5. Check the resulting file in a player that supports Matroska audio, such as VLC or mpv.

If you prefer a graphical workflow, some audio editors and media tools can open W64 and export to Matroska-compatible audio formats, but FFmpeg is usually the most reliable and flexible option. You can also convert the file on 101convert.com for free, without installing any software.

Quality, compatibility, and limitations

The main limitation is that MKA is a container, not a single audio codec. The final compatibility depends on which codec you choose inside the container. For best preservation of quality, use FLAC or PCM; for smaller files, use a compressed codec only if your playback devices support it. Also note that some players recognize MKA less widely than WAV or FLAC, so compatibility may be lower on basic hardware players and older software.

Another important point is that converting from W64 to MKA does not improve audio quality. If the source is uncompressed PCM, a lossless MKA conversion will keep the same audio data, but the container structure changes. If the source contains metadata or broadcast-style chunks, not all of that information may carry over perfectly into Matroska.