AIFC to WMA Converter

Converting AIFC to WMA: What This Covers

People land on this conversion for one of two reasons: a Windows-only workflow that expects Windows Media Audio, or a car head unit, older portable player or legacy kiosk system that lists WMA on its spec sheet next to MP3. This page walks through the whole job — what the encoder actually writes, which bitrate control to use, and the handful of failures that trip people up when a Mac-authored AIFF-C meets a Microsoft codec.

How to Convert AIFC to WMA

1. Upload Your AIFC File: Drag .aifc files onto the page or click "+ Add Files". Multiple files can sit in the queue and share one set of settings.
2. Set the Quality Preset: Open File Compression and use the Preset dropdown — Highest through Lowest — to trade size against fidelity. "Very High (Recommended)" is the balanced entry for music.
3. Or Pin an Exact Bitrate: Instead of a preset, switch to Constant Bitrate (128 kbps by default), Variable Bitrate, Custom Bitrate, or Specific file size if a device or upload limit forces a number. Audio Channel, Audio Sample Rate and Trim are on the same panel.
4. Convert and Download: Click Convert and save the .wma. No sign-up, no watermark.

Walk-through: Picking a Bitrate Mode

Every control in the File Compression panel ends up doing the same thing — telling the encoder how many bits per second it may spend — so pick the one that matches the constraint you actually have:

• You just want it to sound right: use Preset. "Very High (Recommended)" or "Highest" keeps stereo music comfortably transparent for casual listening.
• A device documents a bitrate: use Constant Bitrate. Old head units and firmware-limited players sometimes refuse anything above a stated ceiling, and CBR is the only mode that guarantees you stay under it.
• You have a hard size budget: use Specific file size and enter it directly, or File Size Percentage to target a share of the source.
• You want efficiency and the player is modern: use Variable Bitrate, which spends bits on dense passages and saves them on quiet ones.

WMA Standard tops out at 48 kHz with up to two channels, so a 96 kHz or multichannel AIFC is downsampled and folded to stereo regardless of what you choose here. Leave Audio Sample Rate on ORIGINAL for 44.1 or 48 kHz sources and it stays where it is.

AIFC and WMA Side by Side

Common Errors and How to Fix Them

• The car deck lists the track but skips straight past it. Almost always a WMA Pro or WMA Lossless file — most head units only decode WMA Standard. Files from this page are WMA v2, which is the Standard family, so re-converting the original usually fixes it.
• The output is mono when the source was stereo. Audio Channel was left on MONO from an earlier job. Set it back to ORIGINAL or STEREO and convert again.
• Music sounds swirly or hollow. That is perceptual coding running out of bits. Move from a low preset to "Very High (Recommended)", or set Constant Bitrate to 160-192 kbps.
• The upload is rejected because the file is named .aif. Some Apple tools write AIFF-C data under the plain .aif or .aiff name. Use the AIFF to WMA page for those — the decoder is the same, only the accepted extension differs.
• iTunes or Apple Music refuses to import the finished WMA. Apple's macOS apps have never decoded WMA. If the destination is an Apple device, convert to MP3 or M4A instead.
• The high-resolution source came back at 48 kHz. Expected: WMA Standard cannot store more, so anything above 48 kHz is resampled during encoding.

When This Doesn't Work

Two cases fall outside what this converter can do. The first is multichannel: if you need 5.1 WMA Pro, this page produces stereo WMA Standard and will fold the extra channels down. The second is an AIFC carrying one of the rarer QuickTime-era payloads — QDesign Music or Qualcomm PureVoice, for example. Those files are unusual, and if one fails to decode the reliable escape hatch is to open it in QuickTime Player on a Mac, export plain uncompressed AIFF, then convert that. If the goal is simply "a small file that plays anywhere", WMA is the wrong target in 2026; MP3 or AAC will play on every device WMA does, plus the ones it does not.

Frequently Asked Questions

Is WMA still worth converting to, or should I use MP3?

Only convert to WMA when something on the other end names it. Hardware that predates roughly 2010 — car head units, MP3-CD players, Windows-based kiosk and paging systems — often lists WMA and MP3 side by side, and in those cases WMA is fine. For anything else, MP3 or AAC is the safer target because WMA has no decoder on iOS, on core Android, or in any mainstream web browser.

Which WMA codec does this page write?

WMA v2 — the second-generation WMA Standard encoder, and the one every WMA-capable player made this century understands. The codec list also carries WMA v1, which exists only for the very first generation of Windows Media players and has no advantage today. Neither is WMA Pro, WMA Lossless or WMA Voice.

How much smaller will the WMA be than my AIFC?

Uncompressed AIFC runs at 44,100 × 2 bytes × 2 channels = 176,400 bytes per second, so three minutes of 44.1 kHz 16-bit stereo occupies about 31.8 MB. At our default 128 kbps constant bitrate that same three minutes is 128,000 ÷ 8 × 180 ≈ 2.9 MB — roughly an eleven-fold reduction. Both figures are pure arithmetic from the bitrate; the actual encoded file lands within a few kilobytes of them.

Will my track titles and artist tags carry over?

AIFF-C stores text in NAME, AUTH and ANNO chunks, and WMA stores it in ASF content-description headers. Basic fields such as title and author can carry across, but AIFF-specific data — markers, instrument loop points, and free-form annotation — has no home in ASF and is dropped. Add tags in your player or library manager after converting if they matter.

Can I get a WMA under a specific size for a device or upload form?

Yes. Choose Specific file size in the File Compression panel and enter the number, or use File Size Percentage to target a fraction of the source. The encoder then works backwards to a bitrate. On a short clip a very small target will audibly damage the audio; trimming the file with the Trim control is usually a better way to hit a small number.

Why did my 24-bit 96 kHz AIFC lose its resolution?

WMA Standard is defined for up to 48 kHz and two channels, and it is a lossy perceptual codec, so bit depth is not preserved in the way it is for PCM. High-resolution masters should stay in AIFF, WAV or FLAC for archiving; make WMA only as a playback copy.

Does converting change the loudness of the file?

No. Nothing on this page applies gain, normalisation or dynamic range processing — the encoder receives the decoded samples as they are. Perceived loudness can shift very slightly at low bitrates because quantisation noise rises, but the programme level itself is untouched.

Are my files private when I convert them here?

Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared or made public.

Need a different target from the same source, or working the other way around? The WMA converter hub lists every format WMA can become.