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WMA to Opus Converter

Convert WMA files to Opus without installing software or uploading anything. A minute of audio goes from about 1.0 MB as WMA to about 1.4 MB as Opus.

  • Free, no sign-up
  • Files never leave your device
  • Powered by FFmpeg
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Your files are processed on this device and are never uploaded to a server.

What happens when you convert WMA to Opus

CompressionLossy → Lossy
Size per minuteWMA ≈ 1.0 MB → Opus ≈ 1.4 MB at 192 kbps
QualityRe-encoded once more; at 192 kbps or higher the extra loss is very hard to hear
TagsTitle, artist and album tags are copied when the target format supports them
Opens inbrowsers, Android, WhatsApp and Discord; older players do not

Sizes are typical values; your files will vary with content and settings.

WMA

WMA Windows Media Audio

WMA is Microsoft's Windows Media audio format, common in older Windows music libraries.

WMA converter
Opus

Opus Opus Interactive Audio

Opus is a modern open codec that outperforms MP3 and AAC at low bitrates. WhatsApp voice notes, Discord and WebRTC calls all use Opus.

Opus converter

How to use the WMA to Opus Converter

  1. 1

    Choose a WMA file or drop it onto the page.

  2. 2

    Review the audio options. The defaults suit most files.

  3. 3

    Click Convert and download your Opus when processing finishes.

Why convert WMA to Opus?

WMA files come from Windows Media Player CD rips and older online music stores. Phones, Macs and browsers rarely play WMA. Choose Opus for voice recordings and low bitrates, where it sounds better than MP3 or AAC at the same size.

Frequently asked questions

Will the Opus lose quality?

Both formats are lossy, so converting re-encodes the data once more. Using a high quality setting keeps the generational loss very small. Avoid converting the same file back and forth repeatedly.

Will the Opus be smaller than the WMA?

No, usually larger: a minute of audio takes about 1.0 MB as WMA and about 1.4 MB as Opus at 192 kbps. Lower the bitrate to shrink it further; 128 kbps is plenty for speech.

Questions about privacy, file-size limits or conversion speed are answered in the general FAQ.