OPUS to MP3 Converter: Free, No Upload

Convert OPUS to MP3 in the browser, so a WhatsApp or Telegram voice message plays on any phone or computer

FromOPUSTo

Quality

Higher kbps sounds closer to the original and makes a bigger file

MP3 · 192 kbps · original channels · original sample rate

Your files never leave this device

How to convert OPUS to MP3

Audio and video files
Open MP4, MOV, MKV, WEBM, M4A, WAV, FLAC, OGG, OPUS, AAC, and MP3 files, and save them as MP3, WAV, M4A, FLAC, or OGG
Sound from a video
Save the sound of a film, a talk, or a music video as its own file, and keep it unchanged when you pick the format marked Original
Many files at once
Drop a whole folder, convert every file with one press, and save them all with Download all
Settings you control
Pick the bitrate, keep one part with Trim, make it mono, change the sample rate, fade the ends, or even out the loudness
Nothing is uploaded
Your files convert on your device, so a private recording never leaves it
Works in your browser
Use it on Windows, Mac, iPhone, iPad, or Android, with nothing to install and no account

Opus is a modern codec made for voice and music over the internet. Chat apps use it for voice messages because it stays clear at a low bitrate.

Detail	Opus compared with MP3
File types	Opus sound usually comes in .opus or .ogg files. WhatsApp and Telegram voice messages are files of this kind.
Bitrate	A voice message uses a very low bitrate, made for speech. MP3 needs a higher bitrate for the same clear voice.
Device support	Android and current browsers play Opus. Older iPhones, car stereos, and many players do not. MP3 plays on all of them.
Size	As MP3 at 128 kbps, a voice message is about 1 MB per minute, larger than the Opus file.
Quality	MP3 at 128 kbps keeps a voice clear. A higher bitrate adds no detail to a voice message.
Telegram voice message to MP3	In Telegram Desktop, right-click the message and choose Save As. Then drop the saved file.

WhatsApp Opus to MP3
On Android, voice notes sit in the WhatsApp Voice Notes folder under Media. Copy them to Downloads, then choose them from there.
Opus and M4A together
One list takes Opus, M4A, and other formats. Drop a mix, and every file becomes an MP3.
On Windows
For OPUS to MP3 Windows users need only Edge or Chrome. The MP3 files go to Downloads.
Many messages at once
Drop the voice messages of a whole chat as one batch. Download all saves an MP3 for each one.

How do I convert Opus to MP3?: Drop the file and press Convert, then Download. You get OPUS to MP3 free, with no sign-up and no limit.
How do I convert Opus or M4A to MP3?: The same way. Drop either kind, or both, and keep MP3 as the output.
What is an Opus file?: It is sound encoded with the Opus codec, usually in an OGG container. WhatsApp, Telegram, Discord, and many web calls use Opus.
How do I convert a WhatsApp voice message to MP3?: Save the message to your phone or computer first. Then drop it and press Convert. Small file, 128 kbps, is plenty for a voice.
Why can my phone not play an Opus file?: Its music app has no Opus decoder. Convert the Opus file to MP3, and the phone plays it.
Does Opus to MP3 lose quality?: A little, because both are lossy. For speech the change is hard to hear.
Are my voice messages uploaded?: No. They convert on your device and are never uploaded.

Voice messages are private talk. An OPUS to MP3 online site keeps them on a server for a while. This OPUS to MP3 converter never sends them.

Suparelay calls the sender's phone from this browser, wherever they are.