OPUS to MP3

Turn WhatsApp and Telegram voice messages (.opus) into MP3 files that play everywhere.

100% private — runs entirely in your browser. Your data is processed on your device and never sent to the internet.

Video and audio are processed in your browser by FFmpeg (ffmpeg.wasm), free software under the GPL-2.0-or-later and MIT licenses — licenses & source.

About converting OPUS to MP3

WhatsApp and Telegram save voice messages as OPUS files (they end in .opus or .ogg). OPUS sounds clear and is very small — but many players, car radios, older phones and Windows apps cannot play it. And some websites and editors only take MP3.

This tool turns an OPUS voice message into an MP3: the most common audio format there is. It plays on every phone, computer, car and website.

Everything happens in your browser. Your voice message is never uploaded — it stays private.

Features

  • Opens .opus and .ogg — WhatsApp and Telegram voice messages, and other OPUS audio
  • MP3 out — or M4A, WAV, OGG and FLAC if you need them
  • Pick the quality — 128 kbps is plenty for speech
  • Listen first — play the voice message and the MP3 on the page
  • Private — nothing is uploaded; voice messages stay on your device
  • Free — no sign-up, no watermark, no app

How to save a voice message from WhatsApp

  • Android: open the chat, press and hold the voice message, tap Share (or the three dots) and save it to Files. Or find it in Android › media › com.whatsapp › WhatsApp › Media › WhatsApp Voice Notes.
  • iPhone: press and hold the voice message, tap Forward, then the Share button, and choose Save to Files.
  • WhatsApp Web / Desktop: hover over the voice message, open the menu and choose Download.

Then open this page and drop the file on the box.

Which MP3 quality for a voice message?

  • 128 kbps — plenty for speech. Small file, clear voice.
  • 192 kbps — the default. Good for voice and music.
  • 320 kbps — only needed for music.

A voice message is mostly speech, so a higher bitrate makes the file bigger without making the voice clearer.

Good to know

  • The first conversion downloads the converter (about 30 MB) once. After that it starts at once.
  • A voice message with a .ogg ending is usually OPUS too — it converts the same way.
  • To keep only part of the message, cut the MP3 with the MP3 Cutter.
  • To write down what was said, use Audio to Text.

How to use it

  • Save the voice message from WhatsApp or Telegram to your phone or computer
  • Click Click to upload, or drag the .opus file onto the box
  • Leave MP3 selected and pick the quality — 128 kbps is fine for speech
  • Press Convert to MP3
  • Play the result, then click Download MP3

Frequently asked questions

What is an OPUS file?

OPUS is a modern audio format made for speech and calls. It is very small and sounds clear, so WhatsApp, Telegram and many call apps use it for voice messages. Not every player can open it, which is why people convert it to MP3.

How do I play a WhatsApp voice message on my computer?

Convert it to MP3 here. Every computer can play an MP3 — double-click it, or open it in any music player.

Is it safe to convert private voice messages?

Yes. The file is converted on your own device. It is never uploaded, so nobody else can hear it.

Can I convert many voice messages at once?

This page converts one file at a time. For many files, use the Bulk Audio Converter.

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