WMA to Opus - Online Audio Converter

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

Convert WMA to Opus

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

Output format

Opus (Opus)

Mode[i]

Simple Advanced

Quality[i]

Sample Rate[i]

Channels[i]

About WMA to Opus

Convert WMA to Opus. WMA is Microsoft's audio codec paired with Windows Media workflows. 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 WMA to Opus?

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

WMA vs Opus

Codec	WMA v2	Opus
Compression	lossy	lossy
Sample behavior	Quality set by bitrate	Quality set by bitrate
Typical use	WMA is Microsoft's audio codec paired with Windows Media workflows.	Opus adapts from 6 kbps speech to 510 kbps music with low latency.

When not to convert WMA to Opus

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

Limits

Starting point: WMA - WMA is Microsoft's audio codec paired with Windows Media workflows. Copy-protected store files cannot be converted; use DRM-free sources. CD-era hardware may not decode it; use MP3 for legacy players. Encode Opus (Opus) from WMA 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 WMA to Opus?

Drop your WMA 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.