Opus to WAV on iPhone

Safari on iOS 15.4 and newer runs the converter completely, on the phone itself. There is no App Store download — and no converter app quietly uploading your recordings to its own servers. Opus files convert to WAV here the same way — nothing to install.

If the file is in Voice Memos or Photos, tap the share icon and choose 'Save to Files' first — that makes it visible to Safari's file picker. The converted file lands in Files (Downloads by default), from where you can share it into Messages, Mail, or any app. Your Opus comes out as WAV, ready to use straight away.

The Opus files people convert on an iPhone almost always originate from Discord recordings, WhatsApp and Telegram voice messages, and WebRTC captures, and Opus is the best lossy codec in use, but it lives inside apps — car stereos, older iPhones and smart speakers won't play it — which is precisely why they're stuck on the phone until you convert them to WAV.

WAV runs about 10 MB per minute against Opus's 0.5, so the file grows roughly 20×. Irrelevant for a session file; keep the original for archiving. No "HD upscaling" is possible from a lossy source. The audio is identical — WAV just stops it degrading further.

Opus to WAV is a common iPhone snag specifically because Opus is the best lossy codec in use, but it lives inside apps — car stereos, older iPhones and smart speakers won't play it, and WAV is what your other apps and devices expect. Apple gives you no built-in way to convert audio at all, so the App Store is full of converter apps — many upload your recording to their own servers, show ads against it, and want a subscription. Doing it in Safari means the Opus file is processed on the phone itself and stays there, which matters when it is a voice memo, an interview, or a recording of your own family.

Your Opus file never leaves the handset. For iPhone that is the whole argument: Discord recordings are usually personal, and the App Store alternative frequently ships them to a company's servers as the price of a free conversion. Processing the Opus-to-WAV conversion on-device means there is no server to trust in the first place.

Where does a Opus file even come from? Usually Discord recordings, WhatsApp and Telegram voice messages, and WebRTC captures. The catch is that Opus is the best lossy codec in use, but it lives inside apps — car stereos, older iPhones and smart speakers won't play it. WAV is the destination when you need uncompressed, edit-ready audio that every DAW and editor accepts. Expect growth, not shrinkage: about 10 MB per minute versus 0.5. That's the price of an uncompressed or lossless container, and it buys you an editing chain that costs nothing further. One honest note on this exact pair: Opus is already lossy, so moving to WAV cannot restore detail the Opus encoder discarded — it hands you an uncompressed container, not better audio, and the value is a loss-free chain from here on.