WMA to OPUS Converter
Convert WMA files to OPUS in seconds, right in your browser. Drop in one file or a whole folder, pick your quality settings and download - nothing is uploaded to a server.
Drop WMA files here
MP3, WAV, FLAC, M4A, OGG, OPUS, AAC, AIFF, WMA, AMR, MP4, MOV & more · Processed on your device - nothing is uploaded
How to convert WMA to OPUS
- Click "Choose files" or drag your WMA files onto the page.
- Make sure "OPUS" is selected as the output format (128 kbps is a good default).
- Optionally click Edit to trim, adjust volume or add effects.
- Click Convert, then Download your OPUS files.
Why convert WMA to OPUS?
OPUS may be better supported by your device or app. To keep quality, choose a bitrate equal to or higher than the original WMA.
OPUS is best for voice notes, WhatsApp/Discord audio, podcasts and streaming at small sizes. All modern browsers, Android, iOS 17+, WhatsApp, Discord, Telegram and VLC.
Will I lose quality?
Converting between two lossy formats re-encodes the audio, which can add a small amount of loss. Use a bitrate at least as high as the original (192 kbps or more) to keep it transparent.
WMA vs OPUS
| WMA | OPUS | |
|---|---|---|
| Full name | Windows Media Audio | Opus Interactive Audio Codec |
| Type | lossy | lossy |
| Best for | older Windows Media Player setups and legacy hardware | voice notes, WhatsApp/Discord audio, podcasts and streaming at small sizes |
| Typical size | ~1.4 MB at 192 kbps per minute | ~0.9 MB at 128 kbps per minute |
| Compatibility | Windows, Windows Media Player, some car stereos. Poor support on Apple and browsers. | All modern browsers, Android, iOS 17+, WhatsApp, Discord, Telegram and VLC. |
| Developed by | Microsoft (1999) | IETF / Xiph.Org (2012) |
WMA to OPUS: questions
How do I convert WMA to OPUS?
Open this page, add your WMA file, make sure OPUS is selected as the output format and click Convert. Your OPUS file is ready to download in seconds.
Will converting WMA to OPUS lose quality?
Converting between two lossy formats re-encodes the audio, which can add a small amount of loss. Use a bitrate at least as high as the original (192 kbps or more) to keep it transparent.
Is this WMA to OPUS converter free and safe?
Yes. It's free with no watermark or sign-up. Files are processed locally in your browser, so your audio is never uploaded or stored on our servers.
Can I convert many WMA files to OPUS at once?
Yes - add up to 5 files at a time on the free plan (unlimited with Pro), convert them all with one click and download them as a ZIP.
What is the difference between WMA and OPUS?
WMA (Windows Media Audio) is a compressed (lossy) format, microsoft's legacy lossy format, still used by older Windows software and devices. OPUS (Opus Interactive Audio Codec) is a compressed (lossy) format: the most efficient modern lossy codec. Opus delivers excellent quality at very low bitrates for both speech and music.
Does it work on Mac, Windows, iPhone and Android?
Yes. The WMA to OPUS converter runs in any modern browser - Chrome, Safari, Edge or Firefox - on desktop and mobile. No software to install.