Convert MKV → MP4 Online — Free
Convert MKV video to MP4 format.
Drag & drop or click to browse
Accepts .mkv files up to 500 MB
Free plan includes 3 conversions/day. Need more? Talk to us →
What is a .mkv file?
MKV is a widely-used format in the Video category. Convert MKV video to MP4 format. Files in this format are commonly used across various tools, pipelines, and workflows.
What is a .mp4 file?
MP4 is a popular format in the Video ecosystem. Converting from MKV to MP4 gives you access to its unique features, broader tooling support, and improved interoperability.
How to convert MKV → MP4 online
Upload your file
Drag & drop your .MKV file onto the upload zone, or click "Browse" to select it.
Validate & preview
The tool checks the file type and size before uploading. Invalid files are rejected immediately with a clear error.
Convert on the server
Click "Convert" to upload and process your file. Server-side conversion typically takes ~120 seconds.
Download your result
When done, click "Download .MP4" to save your converted file. Files are securely deleted after 1 hour.
Frequently asked questions
Is this MKV to MP4 converter free?
Yes. The MKV → MP4 tool is free for up to 3 conversions per day. Pro (30/day) and Business (unlimited) plans unlock higher limits.
Is my file secure on the server?
Your file is uploaded over an encrypted HTTPS connection to a secure server worker. The converted file is stored temporarily and automatically deleted after 1 hour. We never share or store your files longer than necessary.
What is the maximum file size for MKV?
You can convert files up to 500 MB. If your file is larger, consider compressing it first or upgrading to a Business plan for increased limits.
What is the difference between MKV and MP4?
MKV and MP4 are both formats in the Video category, each with different use cases, tooling support, and feature sets. Convert MKV video to MP4 format.
Can I convert multiple files at once?
Batch conversion is available on Pro and Business plans. Free users convert one file at a time.