Convert OPUS to MP3
100% private — runs on your device, never uploaded. Works offline once loaded.
If you have exported a WhatsApp chat and found a pile of .opus files, this is the page you needed. Opus is an excellent modern codec — it is what WhatsApp, Signal, Discord and most voice chat record in, because it sounds good at very low bitrates — and almost nothing outside those apps will play it. Converting to MP3 makes a voice note something you can email, put in a slide deck, hand to a transcription service or keep in an archive that will still open in ten years. Speech needs very little: 128 kbps is generous here, and mono halves the file again with no audible cost, since a voice note was recorded on one microphone anyway.
Frequently asked questions
Can I convert WhatsApp voice notes?
Yes — exported WhatsApp voice notes are .opus files, and this turns them into MP3s that play anywhere. Nothing is uploaded, which matters for private conversations.
What bitrate does a voice note need?
128 kbps is already generous for speech recorded on a phone. Mono at 96 kbps is usually indistinguishable and half the size.
Why will nothing play OPUS?
It is a newer codec built for real-time voice. Messaging apps adopted it quickly; consumer hardware and older software never did.
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