Convert WMA to OPUS online in seconds — free, with no sign-up. OPUS is lossy and ideal for voice, streaming and real-time audio. Your files are encrypted and deleted automatically after 24 hours.
WMA
Windows Media Audio — A Microsoft audio format with limited support outside Windows.
How to convert WMA to OPUS
- 1Upload your WMA file
Click “Choose a file” or drag and drop your WMA file onto the page — no sign-up or email needed.
- 2Convert to OPUS
OPUS is already selected as the output. Open Options to fine-tune quality if you like, then click Convert.
- 3Download your OPUS file
Your OPUS file is ready in seconds — click Download to save it. Files are automatically deleted after 24 hours.
WMA vs OPUS
| WMA | OPUS | |
|---|---|---|
| Full name | Windows Media Audio | Opus |
| Type | Audio | Audio |
| Compression | Lossy | Lossy |
| Best for | legacy Windows audio; converted to MP3 for sharing | voice, streaming and real-time audio |
Frequently asked questions
Does converting WMA to OPUS lose quality?
Both WMA and OPUS use compression, so re-encoding discards a little more data. For a single conversion the change is imperceptible to the ear; just avoid repeatedly re-converting the same file.
What's the difference between WMA and OPUS?
Windows Media Audio (WMA) is lossy and best for legacy Windows audio; converted to MP3 for sharing. Opus (OPUS) is lossy and best for voice, streaming and real-time audio. Convert WMA to OPUS when you need a audio for voice.
Is the WMA to OPUS converter free?
Yes — converting WMA to OPUS is completely free. There's no watermark, no sign-up and no email required, and you can convert as many files as you like.
Are my WMA files private and secure?
Yes. Your uploads are encrypted in transit, processed privately, and automatically deleted within 24 hours. We never share, sell or look at your files.
Can I convert WMA to OPUS on iPhone, Android, Mac or Windows?
Yes. The converter runs entirely in your browser, so it works on any device — iPhone, iPad, Android, Mac, Windows or Linux — with nothing to download or install.
How long does it take to convert WMA to OPUS?
Most files convert in a few seconds. Larger files take a little longer, and your upload speed is usually the limiting factor. There's no queue and no waiting for an email.
What else can I convert WMA files to?
Besides OPUS, you can convert WMA to AAC, AIFF, FLAC, M4A, MP3, OGG and more — see the full list of WMA conversions below.
Other conversions
Last updated July 2026