Convert Opus audio files to MP3 format for universal playback. Free online converter for voice recordings, podcasts, and music. Works on any device.
Conversion settings — add a file to adjust
Upload your .opus file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .mp3 file when it's ready.
Opus is a technically superior audio codec — developed by the Internet Engineering Task Force (IETF) and optimized for both voice and music, it delivers better quality at lower bitrates than any other lossy codec including MP3 and AAC. It powers WhatsApp voice messages, Telegram audio, Discord voice chat, and WebRTC calls. Despite its technical excellence, Opus has a practical problem: not everything can play it.
Car stereos, older smartphones, many portable music players, some smart speakers, and legacy media software do not recognize Opus files. MP3, by contrast, is the closest thing to a universal audio format — every device manufactured in the last 25 years supports it without exception. Converting Opus to MP3 trades a small amount of compression efficiency for absolute playback universality.
Our converter uses FFmpeg to decode the Opus bitstream and re-encode it as MP3 using the LAME encoder, the gold standard for MP3 encoding. The process preserves the audio duration, channel layout, and metadata while outputting a file that plays everywhere.
Compatibility is the overwhelming reason for Opus to MP3 conversion. When you download a WhatsApp voice message, it arrives as an .opus file that many desktop music players, car audio systems, and older phones cannot play. Converting to MP3 makes it playable on every device you own.
Music library management drives conversions too. If you have audio files in Opus format (common from Telegram downloads, YouTube audio extractions, and Linux-native recordings), your music library software (iTunes, Winamp, MediaMonkey, older iPods) may not recognize them. MP3 integrates seamlessly into any music management ecosystem.
Sharing and distribution favor MP3. When you email an audio file, share via Bluetooth, or upload to a platform that expects "standard" audio, MP3 is the safest choice. Opus files may arrive as unplayable attachments for recipients who lack Opus-capable software. MP3 removes any doubt.
FFmpeg decodes the Opus bitstream using its built-in Opus decoder (libopus), handling all Opus frame sizes (2.5ms to 60ms), sampling rates (8-48 kHz), and channel configurations (mono, stereo, surround). The decoded PCM audio is then encoded to MP3 using LAME (libmp3lame) at a configurable bitrate.
For Opus files encoded at 64 kbps or below (typical for voice messages), MP3 output at 128 kbps preserves full perceptible quality. For music-quality Opus at 128-256 kbps, MP3 at 192-320 kbps is recommended. VBR (Variable Bit Rate) mode is available for optimal quality-to-size ratio. The converter preserves Vorbis Comment metadata from the Opus file and maps it to ID3v2 tags in the MP3.
This is a lossy-to-lossy transcode, which introduces a theoretical generation loss. In practice, the loss is negligible when the MP3 bitrate is equal to or higher than the Opus source bitrate. A 128 kbps Opus file converted to 192 kbps MP3 sounds virtually identical. For archival purposes, consider converting to FLAC (lossless) instead if the Opus source is high quality.
| Device | Opus | MP3 |
|---|---|---|
| Windows | Partial | Native |
| macOS | Partial | Native |
| iOS | Partial | Native |
| Android | Native | Native |
| Linux | Native | Native |
| ChromeOS | Native |
| Speed | Near-instant. |
| Output size | MP3 is usually a bit larger than Opus, which is exceptionally efficient — the win is compatibility. |
| Quality | V2 VBR (~190 kbps); transparent for listening. |
| Engine | FFmpeg (libmp3lame), server-side. |
Measured on our servers, June 2026, on a 3-minute audio file.
Resolution: N/A
Bitrate: Audio: 320 kbps stereo
Streaming services re-encode — provide highest quality source
Resolution: N/A
Bitrate: Audio: 128 kbps mono
Mono voice saves bandwidth; most hosts recommend 96-128 kbps
Resolution: N/A
Bitrate: Audio: 256 kbps stereo
Pair with a static image for YouTube upload; audio-only not supported
Resolution: N/A
Bitrate: Audio: 256-320 kbps
SoundCloud transcodes to 128 kbps — upload at maximum quality
Resolution: N/A
Bitrate: Audio: 128 kbps mono
WhatsApp re-compresses; 16MB file limit
Make your Opus audio files play everywhere. Our converter transforms WhatsApp voice messages, Telegram downloads, and Opus recordings into universally compatible MP3 files in seconds. No software installation needed — just upload and convert.
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| Native |
Resolution: N/A
Bitrate: Audio: 192 kbps stereo
8MB free limit, 50MB Nitro — adjust bitrate accordingly
| الميزة | Opus | MP3 |
|---|---|---|
| الاسم الكامل | Opus Audio Codec | MPEG Audio Layer III |
| الامتداد | .opus | .mp3 |
| الأفضل لـ | Low latency | Universal compatibility |