Opus to MP3
Turn .opus files, like saved WhatsApp and Telegram voice notes, into MP3s that play everywhere.
or drop them here · up to 50 MB per file, free
Bigger files? Pro converts files up to 500 MBOver the free limits: you can unlock the download from €1.99.
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Free · No sign-up · No watermark · Your files never leave your device
Opus to MP3 in 3 steps
- Select your Opus files, or drop them on the box.
- Choose the MP3 quality and click Convert to MP3.
- Download each MP3, or all of them in a ZIP.
What Opus files are and why they will not play
Opus is a modern, very efficient audio format made for the internet. WhatsApp, Telegram, Signal, Discord and video calls use it, which is why exported voice notes end in .opus. It sounds clear at tiny file sizes, but many car stereos, music players, Windows apps, video editors and websites still do not accept it.
Converting to MP3 makes the recording playable everywhere. Voice notes are mono and quiet in detail, so 128 kbps is more than enough and keeps the MP3 small; choose 192 or 320 kbps for music. Expect the MP3 to be several times bigger than the Opus file: Opus is simply far more efficient.
Frequently asked questions
How do I convert Opus to MP3?
Select your .opus files here, choose the MP3 quality and click Convert to MP3. Each file is decoded by your browser and encoded as MP3 on your device. When you convert several, you can download them all at once in a ZIP file.
How do I save a WhatsApp voice note as MP3?
On Android, find the voice note in the WhatsApp Media folder or share it to Files; on iPhone, press and hold it, choose Forward, then Share and Save to Files. Then open this page, select the .opus file and convert it.
Does my browser support Opus?
Chrome, Edge and Firefox read Opus on every system. Safari reads it on recent versions of macOS and iOS; on an older iPhone or Mac the page may say it cannot read the file. In that case update the system or open this page in Chrome.
Why is the MP3 bigger than the Opus file?
Opus compresses speech far better than MP3, so a one-minute voice note of 100 KB can become an MP3 of about 1 MB at 128 kbps. The sound is the same; MP3 just needs more data to hold it.
Are my files uploaded to a server?
No. The audio is converted inside your browser on your own device, so private voice messages and recordings are never sent to us or stored anywhere. Once the page has loaded, the converter keeps working even without an internet connection.