How to Convert MKV to MP4 for Free (No Software)

Quick answer: open the MKV to MP4 converter, choose your file and tap Convert to MP4. You get an H.264 MP4 that plays on phones, TVs, Windows, Mac and most video editors.

Why convert MKV to MP4?

MKV is a flexible container often used for movies and screen recordings. Many phones, smart TVs, social apps and editors cannot play it. MP4 with H.264 plays almost everywhere.

Step by step

1. Open the MKV to MP4 converter.
2. Add your .mkv file (up to 60 MB).
3. Tap Convert to MP4 and wait. Longer clips take longer.
4. Download the MP4.

Other video types

The same tool handles WebM to MP4, AVI to MP4, 3GP to MP4, FLV to MP4 and iPhone videos with MOV to MP4. Read how to convert iPhone MOV (HEVC) to MP4 if your iPhone video will not play on a PC.

Will it lose quality?

The video is re-encoded at a high quality setting, so most people will not see a difference. If you need a perfect copy for editing, keep your original MKV too.

File too big?

The limit is 60 MB per file. Trim the video first, or send it in parts. For audio only, use Video to MP3.

Is it private?

Your file is sent over an encrypted connection, converted and deleted automatically: the upload right after conversion, and the result within about 15 minutes.

Troubleshooting

• "This video could not be converted": the file may be damaged or use a rare codec.
• No sound in the result: the source had no audio track.
• Still will not play: make sure your player supports H.264 MP4, which nearly all do.