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Opus to AMR - Online Audio Converter
Convert Opus to AMR online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert Opus to AMR
Drop Opus audio here or click to select
Opus
AMR (AMR-NB)
About Opus to AMR
Convert Opus to AMR. Opus adapts from 6 kbps speech to 510 kbps music with low latency. AMR encodes narrowband speech for GSM calls at 12.2 kbps and below. Tuned for voice calls, so music loses detail by design..
Why convert Opus to AMR?
- Smaller files with AMR lossy compression.
- Keep quality where supported.
- Private, no upload - runs in your browser.
Opus vs AMR
| Codec | Opus | AMR-NB |
|---|---|---|
| Compression | lossy | lossy |
| Sample behavior | Quality set by bitrate | Quality set by bitrate |
| Typical use | Opus adapts from 6 kbps speech to 510 kbps music with low latency. | AMR encodes narrowband speech for GSM calls at 12.2 kbps and below. |
When not to convert Opus to AMR
- Skip AMR for archival masters: lossy compression discards detail, so keep the Opus original.
- Keep a master copy: repeated exports stack small losses, so archive Opus before batch AMR shares.
Limits
Starting point: Opus - Opus adapts from 6 kbps speech to 510 kbps music with low latency. CD-era hardware may not decode it; use MP3 for legacy players. Tuned for voice calls, so music loses detail by design. Encode AMR (AMR-NB) from Opus at 256k for music or 128k for speech, starting from the master.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.
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FAQ
How do I convert Opus to AMR?
Drop your Opus file onto this page, choose quality and codec settings, then click Convert. The result downloads as AMR instantly. All processing runs in your browser.
What codec is used for AMR?
The default codec for AMR is AMR-NB. You can change audio parameters in Advanced mode.
How do you store my files?
We do not store any processed audio. All conversion happens entirely in your browser using FFmpeg WASM.