MKV to MP4 Converter

Convert a movie or series from MKV to MP4 - for TV, phone, and the web

No software installation • Fast conversion • Private and secure

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Converters from MKV

MKV to AACMKV to AVIMKV to FLACMKV to GIFMKV to M4AMKV to MOVMKV to MP3MKV to OGGMKV to OPUSMKV to WEBM

Converters to MP4

3GP to MP4AVI to MP4DIVX to MP4FLV to MP4GIF to MP4M2TS to MP4M4V to MP4MOV to MP4MPEG to MP4MPG to MP4MTS to MP4RMVB to MP4TS to MP4VOB to MP4WEBM to MP4WMV to MP4XVID to MP4

When you need MKV to MP4

MKV is a flexible container: it packages movies with multiple audio tracks, subtitles in different languages, and chapters for navigation. That is exactly why MKV is so popular for storage on computers. But beyond a PC, this format creates problems: many TVs, phones, and websites simply cannot open it. MP4 is the most widespread video format - practically every device and service understands it without extra software.

Converting MKV to MP4 is useful when you want to watch a movie on a TV or phone, share a clip in a messenger with a preview, upload video to a hosting platform, or embed it on a website.

What changes after conversion

You get the same clip in MP4, which will open on a TV, smartphone, tablet, and in a browser. Quality will not improve - conversion only changes the format, it does not improve the source image.

It is important to understand something specific to MKV: this format often stores multiple audio tracks (for example, the original and a dub) and embedded subtitles. When converting to MP4 with a simple online tool, additional tracks and subtitles may not carry over - you will get the main track and video without embedded subtitles. Manual track selection is not available in a simple online converter.

When this is especially useful

  • A movie downloaded in MKV does not open on the TV or shows a black screen.
  • You need to watch video on an iPhone or iPad without installing third-party apps.
  • You want to send a clip in a messenger with a proper preview.
  • The video needs to be uploaded to a website or video hosting platform.
  • The video editor does not import MKV.

Common tasks and search situations

  • convert MKV to MP4 for a Samsung or LG TV;
  • open an MKV movie on iPhone without VLC;
  • convert anime MKV to MP4;
  • upload MKV video to YouTube;
  • make MKV readable on an Android phone;
  • convert a series from MKV to MP4 for watching on a tablet;
  • convert MKV without losing image quality;
  • open MKV in a video editing app.

What to check before converting

  1. Make sure the file is not damaged - try playing it on a computer before uploading.
  2. If the movie has multiple audio tracks, decide which one you need beforehand: track selection is not available in a simple converter.
  3. If subtitles matter, save them as a separate .srt file before converting.
  4. Assess the source quality: a blurry or dark video will not become sharp.

Format and conversion limits

During conversion the video is re-encoded - quality will not improve, it is limited by the source file. If MKV stored multiple tracks and subtitles, only the main audio track will carry over to MP4; subtitles and chapters may not be preserved. For regular work with large movie collections, paid limits are available - see current terms on the pricing page.

Related tasks

If you need the reverse - packing video back into MKV for storage on a computer, use MP4 to MKV. Want to convert iPhone video from MOV to MP4 - MOV to MP4 fits. For converting an outdated Windows format, see WMV to MP4.

What is MKV to MP4 conversion used for

Movie on TV

A downloaded MKV does not open on a Smart TV or media player. After converting to MP4, the file plays on any TV without extra software.

Watching on iPhone or iPad

iOS does not open MKV without third-party apps. MP4 plays with the built-in player directly from the file system.

Uploading to a video hosting platform

Video hosting services and social networks work better with MP4 - fewer errors on upload and faster processing.

Sending via messenger

A clip in MP4 shows a preview and plays directly in chat - unlike MKV, which is often treated as an attachment with no preview.

Editing in a video editor

Many video editors do not import MKV directly. MP4 opens in any editing app without extra steps.

Tips for converting MKV to MP4

1

Save subtitles in advance

If MKV has subtitles and you need them, extract or save them as a separate file before converting. Embedded subtitles may disappear after converting to MP4.

2

Check the file before uploading

Make sure the MKV plays on a computer. A damaged or incomplete file will most likely not convert or will give a poor result.

3

Do not expect quality improvement

Converting from one format to another does not add sharpness or detail. The result is limited by the quality of the source video.

Frequently Asked Questions

Will subtitles be kept when converting MKV to MP4?
Not necessarily. MKV can store embedded subtitles, but with a simple online converter they may not carry over. If subtitles matter, save them as a separate .srt file before converting.
Will all audio tracks carry over?
Most likely not. MKV often stores multiple tracks - original and dub. In a simple converter, only the main track carries over. Manual track selection is not available, so check in advance if you need a specific one.
Why does MKV not open on the TV?
Most TVs only partially support MKV or do not support it at all. MP4 is understood by practically all models - it is the most compatible format for TV viewing.
Will the video improve after conversion?
No. Image and audio quality is limited by the source file. Conversion changes the container format but does not improve or worsen the content beyond what re-encoding requires.
Can I convert multiple MKV files at once?
Yes, you can upload multiple files. Each will be processed and available for download separately.
What should I do if conversion does not complete?
Check the file: it may be damaged or incompletely downloaded. Very large files may exceed the free limit - see current terms on the pricing page.
Will the file size change?
It depends on the source video. MP4 and MKV are containers, and size is determined by the video track encoding. After conversion the file may be slightly larger or smaller than the original.