Step 1: Supply your Opus files using the button above or by haul and lay.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Get your converted WMA files.
Opus to WMA Conversion FAQ
What does the OPUS to WMA audio converter do?
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It re-encodes a OPUS audio file as WMA. Sample rate and channel count are preserved; the difference is the codec and container.
Will the sample rate and channel layout be preserved?
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By default yes — stereo stays stereo, the original sample rate (44.1 kHz, 48 kHz, etc.) is carried through to the WMA output.
Is the OPUS to WMA conversion reversible?
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You can convert the WMA back to OPUS on this site. If either format involved is lossy, the round-trip is not bit-perfect even though it is visually or audibly close.
What output quality should I expect from OPUS to WMA?
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Default settings target broadcast / web quality — visually identical to the source for most viewers. For archival use, pick the highest quality option in the converter settings.
Is converting OPUS to WMA a second round of lossy compression?
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Yes, and it is worth planning around. Both formats are lossy, so the WMA encoder is working from audio that has already been through one psychoacoustic pass, and its own decisions compound the first set. At 192 kbps or above the result is still transparent for most listening. If you have a lossless master anywhere, encoding the WMA from that instead avoids the double pass entirely. Opus scales from 6 kbps mono speech to 510 kbps stereo music in the same bitstream and switches modes automatically. WMA is lossy by default, in an ASF container, with lossless and voice-optimised variants that are rarely encountered.
What exactly is a WMA file?
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A container with the audio inside it, rather than the audio on its own. That extra layer is where the length, the seek index and whatever metadata the format defines are kept, so a player knows how long a WMA is before decoding a single frame instead of scanning the whole file to find out. It also means the extension does not always settle what is inside: several containers of this kind are allowed to hold more than one sort of audio, which is why two WMA files can behave differently while looking identical from outside.
Where do OPUS files normally come from?
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From the web, and mostly from software rather than from hardware. OPUS was designed for streaming and for open-source tool chains, so it turns up in game assets, browser recordings, podcast pipelines and anything built by people who did not want a licensing conversation. What it does not turn up in is consumer electronics, which is the usual reason somebody needs to convert one at all. Opus is an IETF standard from 2012 that merged Skype’s SILK speech codec with Xiph’s CELT music codec into one design.
Is OPUS free to use and distribute?
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Yes, without conditions worth worrying about. The specification is public, anyone can implement an encoder or decoder without asking or paying, and nobody can change those terms later — which is why it turns up in open-source tooling, in game engines and anywhere a licence negotiation would have killed the project. Converting away from it does not undo that; the files you already have stay exactly as usable as they were.
Why would anyone still convert to WMA?
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For one specific piece of software or hardware that will accept nothing else — which is a real situation and the only good reason. WMA belongs to an earlier generation: newer codecs do the same job at smaller sizes, general-purpose players drop support for it rather than adding it, and nothing new is being built around it. If something in the chain genuinely demands it, convert and keep the original as the master. If nothing does, convert away from it instead. WMA is unsupported almost everywhere outside Windows, and older WMA files may carry DRM that blocks conversion entirely.
Is there a file-size limit when converting OPUS to WMA?
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Anonymous uploads are capped at a generous default; signed-in free accounts get a higher cap, and Pro accounts have no per-file limit. Browser memory is usually the practical constraint long before our server-side limits kick in.
Can I batch-convert several OPUS files to WMA at once?
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Yes. Drop or pick multiple OPUS files in one upload — the converter processes them in parallel and returns a ZIP of the WMA results. There is no need to repeat the upload step per file.
What happens to my OPUS files after the conversion?
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Uploaded files and WMA outputs are auto-deleted after a short retention window. We do not inspect, share, or train on user files. Direct download links are time-limited and tied to your session.
