How to use the OPUS to MP3 converter
- Choose your OPUS file or drop it on the box.
- Pick an audio quality. 192 kbps is the usual choice; 320 kbps for music you care about.
- Click "Convert to MP3". A progress meter shows how far along it is.
- Download your MP3 and listen to it right on the page.
Why convert OPUS to MP3?
Opus files, including WhatsApp and Telegram voice notes, often will not open on PCs, Macs or in audio editors. MP3 opens everywhere.
- OPUS: not supported by many older players and car stereos.
- MP3: plays on every device.
- MP3: small files.
Voice notes are low bitrate; 128 kbps MP3 is plenty and keeps the file small.
OPUS vs MP3
| OPUS | MP3 | |
|---|---|---|
| Full name | Opus Interactive Audio Codec | MPEG-1 Audio Layer III |
| Type | Audio | Audio |
| Created by | the IETF (Xiph.Org and others) (2012) | the Fraunhofer Institute and MPEG (1993) |
| Compression | Lossy | Lossy |
| Codec | Opus | MP3 |
| Best for | Voice notes, calls, YouTube audio and podcasts | Music, podcasts, audiobooks and ringtones |
| Plays on | Android, Chrome, Firefox and VLC; some car stereos and older Apple apps cannot play .opus files | Every phone, computer, car stereo, smart speaker and browser |
Does converting OPUS to MP3 lose quality?
Both formats are lossy, so converting adds a small amount of loss. Use the same or a higher bitrate than your OPUS (192 kbps covers most files) and the change is inaudible.
How long does it take?
A few seconds for a song, and under a minute for an hour-long recording on most computers.
What is an OPUS file?
Opus is a modern open codec that beats MP3 and AAC at every bitrate, especially for speech. WhatsApp voice notes, Discord, Zoom and YouTube all use Opus.
What is an MP3 file?
MP3 is the most widely used audio format in the world. It removes sounds people are unlikely to hear, shrinking a song to about a tenth of its CD size. At 192 kbps or higher most listeners cannot tell it from the original, and every device plays it. Its patents expired in 2017, so it is now free to use.
Frequently asked questions
How much does the OPUS to MP3 converter cost?
Nothing. It is free with no registration, no watermark and no limit on how many files you convert.
Are my files safe?
Yes. Files are converted locally in your browser and are never uploaded. When you close the page, nothing is left behind.
Will the MP3 sound as good as the OPUS?
Both formats are lossy, so converting adds a small amount of loss. Use the same or a higher bitrate than your OPUS (192 kbps covers most files) and the change is inaudible.
Can I convert MP3 back to OPUS?
Yes, use the MP3 to OPUS converter.
A WhatsApp voice note (.opus) will not play on a PC. What should I do?
Convert OPUS to MP3.
Does it work on iPhone and Android?
Yes, in Safari, Chrome and other modern mobile browsers. Short files work best on phones; for long or high-resolution videos a computer is faster.