Convert a modern Opus audio file (the codec behind WhatsApp voice notes and YouTube audio) into an MP3 that plays on any device. Opus compresses better than MP3, but hardware support is still patchy — MP3 is the universal fallback.
Opus is the newest mainstream audio codec, designed for everything from voice calls to full music. At 96 kbps Opus sounds better than MP3 at 320 kbps, which is why WhatsApp, Discord, and YouTube use it under the hood. The catch: most consumer hardware still cannot play .opus files directly — convert to MP3/AAC for portability.
MP3 is the most compatible audio format ever made. It plays on every device built in the last 25 years, from a $5 Bluetooth speaker to a Tesla, and 320 kbps MP3 is sonically indistinguishable from CD for most listeners. Pick MP3 when you want a file that will simply play, everywhere, without anyone asking what a codec is.
Server-side ffmpeg + yt-dlp on auto-scaling workers. Most files finish in seconds, not minutes.
Every uploaded or fetched file is virus-scanned before it ever reaches your download.
Files live on encrypted S3 storage for 2 hours, then are permanently purged. We never log file contents.
Free for up to 10 conversions per hour with no account. Pro unlocks larger files and priority queue.
Drop a OPUS file from your device, or paste a public URL pointing to the OPUS you want to convert.
The output is pre-set to MP3. You can adjust quality or bitrate in the advanced options if you need a smaller file.
Click Convert. Our cloud workers fetch the OPUS, scan it for malware, and run the OPUS → MP3 pipeline.
A one-time pre-signed link appears as soon as the MP3 is ready. The file is automatically deleted from our storage 2 hours later.
Browse other popular file conversions handled by the same pipeline.