Audio to WMA Converter
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Supports: AAC, AC3, AIF, AIFC, AIFF, AMR +13 more
Advanced Options - Our defaults are optimized for the best results. We recommend you keeping the defaults unless you have a specific need.
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A catch-all audio-to-WMA converter: bring almost any sound file — MP3, WAV, FLAC, AAC, M4A, M4B, OGG, OPUS, AIFF, AC3, AMR, AU, or DSS — and get back a Windows Media Audio (.wma) file. The honest reason to do this in 2026 is compatibility, not quality: WMA is a Microsoft format from the Windows Media Player era, so the right time to reach for it is when an old Windows program, an in-car head unit, or a legacy media device specifically asks for .wma and refuses MP3. If your target plays MP3 or AAC, those travel further — convert audio to MP3 or audio to AAC instead. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public.
How to Convert Audio to WMA
- Upload Your Audio File: Drag and drop or click "+ Add Files" to add one or many tracks. The converter accepts 19 audio input types — including MP3, WAV, FLAC, AAC, M4A, M4B, OGG, OPUS, AIFF, AC3, AMR, AU, and DSS.
- Set the Quality Preset: Open Advanced Options and pick a Quality Preset (Highest down to Lowest). For finer control, the Audio Codec dropdown lets you choose WMA v2 (the default, broadest playback) or WMA v1 for very old players, and File Compression switches between Constant Bitrate, Variable Bitrate, Custom Bitrate, or a Specific file size target.
- Adjust Channel, Sample Rate, or Trim (Optional): Leave Audio Channel and Audio Sample Rate on "Original" to match the source, or set them explicitly — WMA Standard tops out at 48 kHz stereo. Use Trim to export just a clip.
- Convert and Download: Click "Convert" and download your WMA. No sign-up, no watermark.
Source Format and What WMA Does to It
| Your source file | What the WMA encode does |
|---|---|
| Lossless (WAV, FLAC, ALAC, AIFF) | Clean first-generation WMA encode — one lossy compression pass from a pristine master, the best-case quality for WMA. |
| Lossy (MP3, AAC, OGG, OPUS) | Lossy-to-lossy re-encode. WMA cannot rebuild detail the source already discarded; match or exceed the source bitrate to avoid stacking a second round of loss. |
| Already WMA | Re-encodes the container and codec settings; only worth it to change bitrate, codec version, or trim. |
WMA Standard is a lossy codec, so converting to WMA never adds fidelity — it is a compatibility step. If you want a format that plays on virtually everything, MP3 and AAC are the safer modern targets; WMA earns its place only when a specific Windows-era device or app demands it.
Frequently Asked Questions
Why would I convert audio to WMA in 2026 instead of MP3?
Almost the only good reason is a device or program that specifically requires .wma. WMA is Microsoft's format, released on August 17, 1999 to compete with MP3, and its strong support lives in the Windows ecosystem — older Windows Media Player builds, some in-dash car stereos, and legacy enterprise or kiosk software. MP3 plays on a far wider range of phones, browsers, and modern hardware, so if your target accepts it, audio to MP3 is the more portable choice. Pick WMA when something on the receiving end won't take anything else.
Will converting MP3 or AAC to WMA improve the sound quality?
No. WMA Standard is itself a lossy codec, and your MP3 or AAC source has already thrown away data through its own lossy compression. Re-encoding to WMA cannot recover that detail — at best it preserves what is left, and at a too-low bitrate it adds a second layer of loss. To keep the result as close to the source as possible, set the bitrate to match or exceed the original. The only genuinely clean WMA encode comes from a lossless source such as WAV or FLAC.
What's the difference between WMA v1 and WMA v2 here?
Both are versions of the original lossy WMA Standard codec, and this tool defaults to WMA v2 (WMAV2), which offers better quality per bitrate and is what current and Windows Media Player 7-era software expects. WMA v1 (WMAV1) is the older 1999-era encoder, useful only if you are feeding a very old player that chokes on v2. For nearly everyone, leave it on v2. Note that this converter targets WMA Standard; it does not output the separate WMA Pro or WMA Lossless codecs.
How big will my WMA file be compared to the MP3?
For roughly equivalent quality, WMA files tend to run a bit larger than MP3 at the same bitrate, and bitrate is the main lever on size. At 192 kbps a few minutes of stereo audio lands in the low tens of megabytes; drop to 128 kbps and the file shrinks proportionally with some quality cost. If hitting a size ceiling matters more than picking a bitrate, use the Specific file size option under File Compression and the encoder will target it, or run the file through the Audio Compressor afterward.
I know my source format — is there a faster route?
Yes. If every file you're converting is the same type, the dedicated pages skip straight to that pair: MP3 to WMA for the most common case, WAV to WMA for a clean lossless-to-WMA encode, or FLAC to WMA for compressed lossless masters. This generic page exists for the catch-all case — mixed formats, or an audio file whose type you're not sure of. In our testing, a 4-minute 320 kbps MP3 re-encoded to WMA v2 at 192 kbps produced a file in the 5-6 MB range, audibly close to the source on typical playback gear.
How are my files handled, and how long are they kept?
Your file is uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public.