MKV to MP4 Converter
Turn an MKV into an MP4 that plays on phones, Macs and TVs, usually without re-encoding. No account.
The download link expires 1 hour after you download. Nothing is added to your file.
Drop an MKV (up to 100 MB) and get an MP4. When the video is H.264 or HEVC, as in most MKV files, it is copied without re-encoding, so the picture is identical. Sound in AC3, DTS or FLAC becomes AAC, and SRT or ASS subtitles are kept. No account, no watermark.
Why use MKV to MP4?
Same picture, bit for bit
H.264, HEVC, AV1 and VP9 video is copied into the MP4 without re-encoding. Older codecs are re-encoded to H.264.
Every sound track and subtitle that MP4 can hold
All audio tracks are kept, turned into AAC when MP4 needs it. Text subtitles (SRT, ASS, WebVTT) are kept; picture subtitles cannot go into MP4.
Then get the words
One click turns the same video into a transcript. The first 30 minutes are free without an account.
How it works
Drop your MKV
Pick or drag an MKV up to 100 MB. WebM, AVI, MOV, FLV and MTS work too.
Convert to MP4
Most MKV files take a few seconds, because the video is copied, not re-encoded.
Download
Save the MP4 with the same file name.
What you get, measured
A real MKV, converted on this page's engine
Measured November 15, 2026.
| Your MKV | MP4 you get |
|---|---|
| 1080p H.264, AC3 5.1 sound, SRT subtitles, 2 min, 43.7 MB | H.264 copied (identical picture), AAC 5.1 sound, subtitles kept, 44.8 MB |
Frequently asked questions
Drop the MKV here and press Convert to MP4. Download the MP4 when the bar finishes. No account needed.
Not when the video is H.264 or HEVC, which covers most MKV files: we copy it without re-encoding. Only older codecs such as MPEG-2 are re-encoded.
Text subtitles (SRT, ASS, WebVTT) are kept as MP4 subtitles. Picture-based subtitles from Blu-ray or DVD cannot be stored in MP4 and are left out.
Many phones and TVs do not open MKV, or not its AC3 or DTS sound. The MP4 from this page uses AAC sound, which they all play.
You can download the compressed file until one hour after your first download, or for 24 hours if you never download it. After that the link stops working and the job is removed. No watermark is added.
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