Step 1: Supply your AIFF 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.
AIFF to WMA Conversion FAQ
What does the AIFF to WMA audio converter do?
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AIFF is lossless audio; WMA is lossy. The converter re-encodes the waveform at a configurable bitrate. The result is much smaller but discards some inaudible frequency content — usually transparent at 192 kbps+.
What bitrate should I pick for WMA?
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320 kbps for archival quality, 256 kbps for transparent listening on most speakers, 192 kbps for streaming, 128 kbps when file size dominates. Below 96 kbps artifacts become audible on percussive content.
Is the AIFF to WMA conversion reversible?
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You can convert the WMA back to AIFF on this site. If either format involved is lossy, the round-trip is not bit-perfect even though it is visually or audibly close.
How much smaller will the WMA be than my AIFF?
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Typically 5-10x smaller for images, 5-15x smaller for audio. Exact ratio depends on the chosen quality level and the content — flat solid-colour images and silent audio compress far more than detailed photos or busy soundtracks.
How much quality do I lose converting AIFF to WMA?
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Some, and it is permanent — this is the one direction where information is genuinely thrown away. AIFF holds every sample exactly; WMA discards what a psychoacoustic model predicts you will not hear. At 192 kbps and above that prediction is good enough to be transparent on most material and most equipment. Keep the AIFF as your master, because you cannot get back to it from the WMA. AIFF stores uncompressed big-endian PCM — the Apple-side equivalent of WAV, with the same bit-for-bit fidelity. 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.
Is AIFF on its way out?
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It is being quietly succeeded rather than switched off. Everything that plays it today will keep playing it — formats do not stop working — but new encoders and new hardware increasingly default to its replacement, so the real question is whether these files have to open on something bought ten years from now. For anything shared or published, converting is cheap insurance. For a personal library that already plays fine, leaving it alone is a defensible answer. AIFF is as large as WAV with worse support outside the Apple world, so it is a poor choice for distribution.
Is AIFF 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 AIFF 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 AIFF files to WMA at once?
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Yes. Drop or pick multiple AIFF 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 AIFF 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.
