When you get many great MKV videos and wanna import MKV to iMovie for editing for sharing. But when you try this, you get a question that you can't import MKV to iMovie on Mac. In other words, iMovie doesn't recognized MKV video format.
An MKV file is a Matroska Multimedia Container file. The Matroska Multimedia Container is an open standard free container format, a file format that can hold an unlimited number of video, audio, picture or subtitle tracks inside a single file.
So you should consider that you must convert MKV to iMovie workable video format like MP4, etc. Thus you can import MKV into iMovie and editing them.
Mac MKV to iMovie Converter is such software tool which allows you convert MKV to iMovie on Mac easily. With this MKV to iMovie Converter for Mac, many thing you can do for your videos like settings control, snapshot, merge several video or movie files into one, crop the image to remove unwanted backdrops and so on.
This Mac MKV to iMovie Converter also can convert MKV to other popular video formats such as AVI, WMV, ASF, FLV, 3GP. So that you can enjoy your personalized videos anytime and anywhere.
Step by step tutorials for you to import MKV video into iMovie on Mac:
Step 1. Add MKV video files to MKV to iMovie Converter
Download MKV to iMovie Converter, install and run it. Click "Add files" button or drag videos into it.

Step 2. Select iMovie .mp4 as the output format
Select profile drop-down list to choose ".mp4" as the output format.
Step 3. Start converting
When all settings are done, click the "convert" button to start convert MKV video to iMovie.
Step 4. Import MKV video into iMovie
Launch iMovie, go to "file > import movies" to import MKV video into iMovie directly.