Hewbo Video Converter will help you easy convert MKV to MP4 with best quality.
Step 1: Download Hewbo Video Converter and install it.
Download links: Hewbo Video Converter for Windows, Hewbo Video Converter for Mac OSX.
Step 2: Add MKV Video file.
Run Hewbo Video Converter, Click "Add File" to add your MKV video file.

Step 3: Choose Profile.
Click Profile drop-down button to choose "MP4" as your output format.

Step 4: Start to convert MKV to MP4.
Click "Convert" button to start the MKV to MP4 conversion.
Step 5: MKV to MP4 conversion completed.
When MKV to MP4 conversion is done. You can enjoy MP4 videos in your PC and mobile devices now!
Is it pretty simple? try this at MKV to MP4 immediately.