Free online AIFC to MKA converter

Source format

AIFC is an Audio Interchange File Format Compressed file. It is a variant of AIFF used to store compressed audio while keeping the same general container structure as classic AIFF. AIFC files are commonly used in older Mac audio workflows, multimedia archives, game audio, and professional audio projects that need a compact, lossless or lossy compressed representation depending on the codec inside the file.

AIFC is supported by some audio editors and converters, but compatibility can vary because the file may contain different compression methods. In practice, it is often converted to a more widely supported format for playback or editing.

Target format

MKA is an Matroska audio file. It is an audio-only container based on the Matroska multimedia format and is commonly used to store one or more audio tracks with modern metadata support. MKA is useful for archiving, transporting high-quality audio, and keeping audio in a flexible container that works well with many codecs.

The main advantages of MKA are good codec flexibility, strong metadata support, and excellent compatibility with modern media tools. It is especially useful when you want to preserve audio in a container that can hold compressed or lossless streams efficiently.

How to perform the conversion

The most reliable way to convert AIFC to MKA is with FFmpeg, because it can read many AIFC variants and write Matroska audio containers directly.

1. Install FFmpeg on your computer.
2. Open a terminal or command prompt in the folder containing your AIFC file.
3. Run a command such as ffmpeg -i input.aifc -c:a copy output.mka if the audio codec inside AIFC is already compatible with Matroska and you want a direct stream copy.
4. If stream copy is not supported, re-encode the audio with a command such as ffmpeg -i input.aifc -c:a flac output.mka for lossless output, or choose another codec supported by your workflow.
5. Open the resulting output.mka in a media player or editor to verify playback and metadata.

If you prefer a graphical workflow, you can use a desktop audio tool that supports both formats, import the AIFC file, then choose File → Save as or File → Export and select Matroska audio if available. However, support for MKA export is less common in audio editors than in FFmpeg-based workflows.

You can also convert the file on 101convert.com for free, without installing any software.

Notes on quality and compatibility

The quality of the converted file depends on whether you use stream copy or re-encoding. If the source AIFC codec can be copied into MKA, the conversion is lossless. If re-encoding is required, quality may change depending on the chosen codec and settings.

Not every AIFC file uses the same compression method, so some tools may fail to open certain files or may decode them incorrectly. In those cases, FFmpeg is usually the best first choice because it supports a wide range of audio codecs. Also note that MKA is a container, not a codec, so playback compatibility depends on the audio codec stored inside it. For maximum compatibility, choose a widely supported codec such as FLAC for lossless audio or a common lossy codec if file size matters more than fidelity.