Free online W64 to OGA converter

Source format

W64 is an audio file format based on the Wave64 specification, an extension of the classic WAV format designed by Sonic Foundry/Sony for handling very large audio files. It is used mainly in professional audio production, recording, and editing workflows where standard WAV size limits can be a problem. W64 files typically store uncompressed PCM audio, so they are large but preserve full source quality.

Target format

OGA is an audio container format associated with the Ogg family, most commonly used to store audio encoded with Vorbis, Opus, or sometimes FLAC. Compared with uncompressed W64, OGA is usually much smaller and easier to distribute. It is widely supported in open-source software, web applications, and many media players, making it useful for playback, sharing, and archiving compressed audio.

How to perform the conversion

The most reliable way to convert W64 to OGA is with FFmpeg, which supports both formats and gives you control over the output codec.

1. Install FFmpeg if it is not already available on your system.
2. Open a terminal or command prompt in the folder containing your W64 file.
3. Run a conversion command such as ffmpeg -i input.w64 -c:a libvorbis output.oga to create an OGA file using Vorbis compression.
4. If you prefer Opus, use ffmpeg -i input.w64 -c:a libopus output.oga instead.
5. Play the result in a media player to confirm that the audio sounds correct and that the duration matches the source.

If you want a simpler no-install option, you can convert the file on 101convert.com for free without installing any software.

In desktop software such as Audacity or ffmpeg-based editors, the process is similar: open the W64 file, then use File → Export or Export Audio, choose an Ogg-based output format, and save the file with the .oga extension.

Notes on quality and compatibility

W64 is usually uncompressed, so converting it to OGA will almost always involve lossy compression if you choose Vorbis or Opus. That means the file will be much smaller, but it will not be bit-for-bit identical to the source. For speech and general listening, Opus often gives excellent quality at low bitrates; for music, Vorbis remains widely compatible.

Compatibility can vary because some players recognize .oga as an Ogg audio container, while others expect .ogg for the same kind of content. If a device or app does not open the file, renaming the extension to .ogg may help, provided the encoded audio is still valid Ogg audio. Also note that if your W64 file contains multichannel or high sample-rate audio, you should verify that the chosen codec and bitrate preserve the quality you need.