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WAVOpus

Convert WAV to Opus

This free WAV to Opus converter changes your Waveform Audio (.wav) file into a Opus Audio (.opus) file, right in your browser. There is nothing to install, no account to create, and no limit on how many files you convert.

100% private. Your file is processed locally in your browser with WebAssembly — it is never uploaded to a server, stored, or seen by anyone.

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The conversion runs on your own device using ffmpeg compiled to WebAssembly (ffmpeg.wasm), so your file is never uploaded to a server. Opus is best for low-bitrate voice and streaming, which is the usual reason to convert from WAV.

Why convert WAV to Opus?

  • Note: Opus has narrower support than WAV - convert only when a specific app or workflow needs it.
  • Compressing WAV to Opus makes files much smaller, discarding detail your ears rarely notice.
  • Pick Opus when you need a file made for low-bitrate voice and streaming.

WAV vs Opus

PropertyWAVOpus
Full nameWaveform AudioOpus Audio
ContainerWAVOgg
Typical codecPCMOpus
CompatibilityUniversalModern players
LosslessYesNo
Best forUncompressed editing and masteringLow-bitrate voice and streaming

How to convert WAV to Opus

  1. Add your WAV file

    Drag and drop your .wav file onto the upload area, or click to browse and pick it from your device.

  2. Start the conversion

    Click "Convert to Opus". Everything runs locally with ffmpeg compiled to WebAssembly (ffmpeg.wasm) - your file stays on your device.

  3. Wait a few seconds

    A progress bar shows the conversion. The first run is slightly slower while the engine loads, then it is cached.

  4. Download your Opus file

    When it finishes, download the .opus file straight to your device.

Frequently asked questions

Is this WAV to Opus converter free?
Yes. It is completely free with no signup, no watermark, and no limit on how many files you convert. It is supported by ads, which keeps the conversion itself free.
Are my files uploaded to a server?
No. The conversion runs locally in your browser using ffmpeg compiled to WebAssembly (ffmpeg.wasm), so your file is processed in memory on your own device and is never uploaded, stored, or seen by anyone.
Will I lose quality converting WAV to Opus?
The audio is re-encoded to Opus, which is lossy. At a sensible bitrate the difference is hard to hear, but converting back and forth repeatedly will degrade quality.
Will the file get smaller or larger?
Much smaller. Opus is compressed, so converting from lossless WAV usually cuts the size by more than half.
What is the difference between WAV and Opus?
WAV is Waveform Audio (a WAV container, typically PCM); Opus is Opus Audio (an Ogg container, typically Opus). Opus is best for low-bitrate voice and streaming, while WAV is best for uncompressed editing and mastering.
How long does the conversion take?
Most files finish in a few seconds to under a minute, depending on length and your device. The first conversion is a little slower while the engine downloads and caches, then later runs start instantly.

Related conversions

MP3 → OpusOGG → OpusM4A → OpusWAV → MP3WAV → M4AWAV → FLAC

Need more formats or options? Use the full Audio Converter.