Will the video lose quality?

Often the video is repackaged into MP4 without re-encoding, so quality stays the same. When re-encoding is needed, the trade-off is small.

What happens to extra audio tracks or subtitles?

MKV can hold many tracks, while MP4 supports fewer, so the main audio is kept and some extra tracks or subtitles may not carry over.

Will the file size change much?

Usually it stays close to the original, since the video data is typically carried over rather than fully recompressed.

MKV to MP4 Converter

Convert MKV to MP4 online quickly and easily. Just upload your file, convert it, and download the MP4 in seconds.

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What is MKV ?

MKV, or Matroska Video, is a versatile multimedia container format that can hold a variety of video, audio, subtitle, and metadata streams. It is widely used for high-definition online video content due to its support for advanced codecs and features such as multiple audio tracks and subtitles.

MKV format ▶

What is MP4 ?

MP4, or MPEG-4 Part 14, is a digital multimedia container format commonly used to store video and audio streams, as well as subtitles and still images. It is widely supported across various devices and platforms, making it a popular choice for video sharing and streaming applications.

MP4 format ▶

How to Convert MKV to MP4 in Just a Few Steps

Upload your MKV file
Drag and drop your MKV file, click 'Select Files' to upload from your device, or import directly from Dropbox, Google Drive, OneDrive, or paste a URL.
Choose MP4 as output format
The converter is preset to MP4, but you can select any other output format before converting.
Adjust settings (optional)
If you like, tweak output options such as resolution, quality, or compression before converting.
Convert the file
Click the 'Convert' button. The conversion takes only a few seconds.
Download your converted file
Download the converted file to your device, or save it directly to Google Drive, Dropbox, or OneDrive.

Why Convert MKV to MP4 file?

MKV is a flexible video container popular for high-quality movies and files with multiple audio tracks and subtitles, but its flexibility is also its weakness: many phones, TVs, editors, and websites will not play an MKV file. Converting MKV to MP4 turns your video into the format that plays smoothly almost everywhere, from mobile devices to browsers to social platforms, without compatibility headaches.

Because MKV and MP4 often use the same underlying video, the conversion is usually quick and keeps the picture and sound quality essentially intact. The result is a widely compatible MP4 you can upload, stream, or drop into an editor with confidence. Whether you want to watch a movie on your phone or share a clip online, converting MKV to MP4 makes the video simply work.

Start converting MKV to MP4 now — it’s fast, safe, and completely online!

Frequently Asked Questions

Why convert MKV to MP4?

MKV is a flexible container but is not accepted by many phones, browsers, and editors. MP4 is far more widely supported, so it plays and uploads almost everywhere.
Will the video lose quality?

Often the video is repackaged into MP4 without re-encoding, so quality stays the same. When re-encoding is needed, the trade-off is small.
What happens to extra audio tracks or subtitles?

MKV can hold many tracks, while MP4 supports fewer, so the main audio is kept and some extra tracks or subtitles may not carry over.
Will the file size change much?

Usually it stays close to the original, since the video data is typically carried over rather than fully recompressed.

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