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How to Add Subtitles to MKV Videos with a Few Clicks

Author by Annie

Updated on Jul 4, 2022

An .mkv movie file can hold multiple subtitle tracks, but it cannot cover all languages, so it's important for movie lovers to know how to add subtitles to MKV movies.

Hence in this article, I will elaborate on how to add subtitles to MKV with some online tools and also introduce a free multifunctional subtitle adding tool to you:

The other day, my friend sent me an MKV movie file and asked me if I have any idea how to add English subtitles to this foreign movie. It is as easy as pie for me. I added the subtitle to this MKV movie immediately and sent it back to him. Then, I told him the way to add subtitles to MKV and other movies. If you have the same needs, I would like to share two handy ways to free add SRT to MKV and other movies without any trouble.

You can hardcode subtitles to videos if the MKV movie contains subtitle tracks. Otherwise, you need to download the needed subtitles. Subscene and OpenSubtitles are 2 recommended sites to download subtitles. There are many common subtitle formats, such as SRT, ASS, SSA, IDX, SUB, etc., and among all the subtitle formats, SRT is the most frequently-used one. So, I will show you how to add SRT to MKV.

Method 1. Add Subtitles to MKV Permanently with a Functional Desktop Program

This is my favorite and most frequently-used method of adding subtitles to MKV and other videos. Every time I have the need to add subtitles, I will turn to Free HD Video Converter Factory, and it will never let me down. It can successfully add subtitles to videos with a few clicks without any quality loss. Of course, if I have to remove the subtitle from MKV, Free HD Video Converter Factory is still my first choice.

Now, download and installdownload and install this freeware, and learn how to add subtitles to MKV.

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How to Embed Subtitles to MKV with Free HD Video Converter Factory

Import the MKV Files to the Software

Step 1. Import MKV Files to the Software

To add subtitles to MKV, first, launchlaunch the subtitle adding tool and open the Converter workplace. Then, click the "Add Files" button to batch import all your desired MKV files to it. Or you can directly drag and drop MKV files to the main interface.

Hot Search: Add Subtitles to MP4 | Auto Subtitles | HandBrake Subtitles | Add Subtitles to DVD

Merge SRT with MKV Files

Step 2. Merge SRT Subtitle Files with MKV Files

After MKV videos are imported, you'll see a tool bar at the bottom of each video, the first of which is the Subtitle Option. Then click the "+" button to browse your computer and choose the needed subtitle file. Just follow the above steps to add subtitles to other MKV files. When you're all set, click the RUN button at the bottom to initiate the process of embedding subtitles to MKV.

Note: This converter supports .ass and .srt subtitle formats as inputs and both hard and soft outputs.

Free HD Video Converter Factory allows you to convert videos/audio to more than 500 formats and devices. For example, you can convert MP4 to MKV, convert AVI to MKV, and etc. If you need to convert the MKV movies to other formats, just click the "Click to change output format" area and choose an output format/device as you need.

Method 2. Merge SRT with MKV with Online Tools

How to Hardcode Subtitles MKV OnlineHow to Hardcode Subtitles MKV Online

Some people may prefer to add subtitles to MKV online so they don't have to install any software. However, online tools have some flaws, such as the limits on video size and video formats, slow and unstable upload & download process, too many pop-ups and ads, all of which are what you need to be aware of. Here, I will take one online tool as an example to show you the ropes.

Step 1. Go to and upload an MKV file.

Step 2. Select SRT file to upload > click the "Add Subtitles" button > after done, download the MKV file with subtitles.

Online vs Offline. Which One is the Best Tool for Adding Subtitles

Online tools usually have few video formats options to offer you, and the whole prcess may be too long too tolerate as upload nad download large MKV files cost you plenty of time. So if you need to add subtitles to more videos efficiently, Free HD Video Converter Factory is the perfect choice. In addition to adding subtitles to MKV and other videos, Free HD is so versatile that it enables you to convert videos to more other formats, even to audio, such as convert MP4 to WAV, convert WMV to MP4, etc., and it excels in downloading videos and audio from over 500 websites, for example, it can download YouTube playlists, download Facebook videos, download Instagram videos, etc.

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HD Video Converter Factory Pro is the upgraded version of Free HD Video Converter Factory. In addition to the basic downloading, editing and conversion function, it can convert 4K & HD videos, letting you enjoy higher definition videos. Also, its batch processing, 50X speedup conversion, lossless compression, and built-in ringtone studio make it a must-have video/audio converter and downloader.

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