AMR to Opus - Online Audio Converter

Convert AMR to Opus online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.

Convert AMR to Opus

[+] Drop AMR audio here or click to select AMR

Output format

Opus (Opus)

Mode[i]

Simple Advanced

Quality[i]

Sample Rate[i]

Channels[i]

About AMR to Opus

Convert AMR to Opus. AMR encodes narrowband speech for GSM calls at 12.2 kbps and below. 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..

Why convert AMR to Opus?

Smaller files with Opus lossy compression.
Keep quality where supported.
Private, no upload - runs in your browser.

AMR vs Opus

Codec	AMR-NB	Opus
Compression	lossy	lossy
Sample behavior	Quality set by bitrate	Quality set by bitrate
Typical use	AMR encodes narrowband speech for GSM calls at 12.2 kbps and below.	Opus adapts from 6 kbps speech to 510 kbps music with low latency.

When not to convert AMR to Opus

Skip Opus for archival masters: lossy compression discards detail, so keep the AMR original.
Keep a master copy: repeated exports stack small losses, so archive AMR before batch Opus shares.

Limits

Starting point: AMR - AMR encodes narrowband speech for GSM calls at 12.2 kbps and below. Tuned for voice calls, so music loses detail by design. CD-era hardware may not decode it; use MP3 for legacy players. Encode Opus (Opus) from AMR 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 AMR to Opus?

Drop your AMR file onto this page, choose quality and codec settings, then click Convert. The result downloads as Opus instantly. All processing runs in your browser.

What codec is used for Opus?

The default codec for Opus is Opus. 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.