Convert MKV to MP4Right in Your Browser
Turn MKV videos into universally supported MP4 files right in your browser. Most MKV files convert in seconds because the video stream is repackaged, not re-encoded — and your file never leaves your device.
Drag & drop files here
or click to browse
Your files never leave your device
Select the output format and click Convert
1. Add your files
Drag & drop or click to browse. Multiple files supported.
2. Pick your settings
Choose the output format.
3. Download
Files convert on your device and download instantly.
About this conversion
MKV (Matroska) is a flexible, high-quality container popular for movies and TV, but it's awkward in practice: iPhones, iPads, many smart TVs and most editing apps simply won't open it. Converting MKV to MP4 keeps the same video and audio while switching to the container that plays essentially everywhere.
The best part is speed. When an MKV already holds MP4-compatible codecs — which is common — this tool rewraps the streams into MP4 without re-encoding, so a large file converts in seconds with zero quality loss. And because it all happens in your browser, the video never leaves your device.
Frequently Asked Questions
Why convert MKV to MP4?
MKV is a great container but isn't supported by iPhones, iPads, many TVs, or most editing apps. MP4 with H.264 video plays practically everywhere.
Will converting MKV to MP4 lose quality?
When the underlying codecs are compatible, the converter repackages the streams without re-encoding, which is lossless and near-instant. When re-encoding is required, it uses high-quality settings that keep the output visually identical to the source.
Is it safe to convert MKV videos online?
Yes. Unlike traditional online converters, this tool never uploads your files. The conversion runs entirely inside your browser using WebAssembly, so MKV videos never leave your device — you can even disconnect from the internet after the page loads and it still works.
Is there a file size limit?
Files up to about 1.5 GB are supported. Because processing happens in your browser's memory rather than on a server, very large files depend on your device's available RAM.
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A free, privacy-first online converter built by Softorino.
No sign-up. No ads. No data collection.
Supports the most common video and audio formats — MP4, MKV, MOV, WEBM, GIF, MP3, WAV, FLAC and more — with a focus on Apple-compatible outputs.
Softorino Converter is a free, fast, privacy-first video & audio converter that runs in-browser (no sign-up, no data collection).
Why It Exists
Most top search results for "how to convert [X to Y]" lead to sketchy, ad-heavy websites or tools that:
- —Upload your file to unknown servers
- —Limit free use or add watermarks
- —Track you or show spammy ads
Softorino Convert is trying to be the trusted alternative:
No tracking. No uploading. No BS.