Convert WAV to OPUS
Shrink studio-size WAV recordings down to a fraction of their weight for sharing and storage. The conversion runs on your machine, not on a server.
Why convert WAV to OPUS?
WAV is what editors and recorders produce: Audacity exports, Pro Tools bounces, and field recorders like the Zoom H series all write uncompressed PCM. At roughly 10 MB per minute, those files are painful to email, host, or keep on a phone. Converting to Opus solves that for delivery: game developers ship dialogue and ambience in Opus to cut download size, podcasters send episode drafts over chat, and web developers embed interview audio without wrecking page load times. A one hour recording that weighs around 600 MB as WAV lands near 85 MB as Opus at 192 kbps. One check before you commit: browsers and modern apps read .opus happily, but older car stereos, some hardware players, and some DAWs do not, so know where the file needs to play.
Quality and file size
This conversion discards data by design: Opus keeps what your ears use and drops the rest. At 192 or 256 kbps the result is effectively transparent for speech and nearly all music, while the file lands at a small fraction of the WAV's size. For reference, uncompressed CD quality audio runs about 10 MB per minute, and Opus at 192 kbps runs about 1.4 MB per minute. One thing to remember: the process is one way. Keep the WAV if you plan to edit later, because converting the Opus back to WAV produces a big file without restoring the discarded detail.
WAV to OPUS: common questions
How much smaller will my file get?
Dramatically. Uncompressed WAV takes about 10 MB per minute at CD quality, while Opus at 192 kbps uses about 1.4 MB per minute. Long recordings shrink the most.
Does converting WAV to Opus lose quality?
Yes, some data is discarded; that is how lossy compression works. At 192 kbps or above the difference is inaudible to most listeners on most material. Keep the WAV if you need a perfect master.
Is anything sent to your servers?
Nothing. The entire conversion runs in your browser through FFmpeg in WebAssembly, so even a giant session file stays on your machine from start to finish.
Can I convert the .opus back to WAV later?
You can, and it will play fine, but the new WAV only contains what the Opus file kept. Detail removed during encoding is gone for good, which is why we suggest archiving the original.
Who makes this?
We're the small team behind Xport Studio, a private, fully offline app for AI vocals, stems, and mastering. These free tools are side experiments we wanted to share. No upsell, but if you're curious about the bigger thing, take a look.