Convert videos to any format
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Supports MP4, MKV, AVI, MOV, WebM and more
Drag & drop your MKV video
Automatic conversion with optimal settings
Save your converted MP4 file
MP4 is universally compatible while MKV has limited device support. Convert MKV to MP4 to share videos on social media, play on mobile devices, or send via messaging apps.
MKV is a flexible, open-standard container format that can hold an unlimited number of video, audio, subtitle, and metadata tracks. It's the preferred format for high-quality video archival and media collections.
MP4 is the most widely used video container format, supporting H.264, H.265/HEVC, and AV1 codecs. It offers excellent compatibility across all devices, browsers, and platforms while maintaining a good balance between file size and quality.
MKV supports more codecs and multiple tracks. MP4 has universal device compatibility. Convert to MP4 when sharing is the priority.
Common scenarios for this conversion
Convert MKV to MP4 when your device or app doesn't support the original format.
Upload MP4 instead of MKV for better support on YouTube, Instagram, and TikTok.
Convert to MP4 for seamless import into professional editing software.
Play MKV files on any phone by converting to MP4.
Your files never leave your device. All conversion happens in your browser — no server uploads.
Hardware-accelerated conversion powered by WebCodecs and WebAssembly.
Convert between any video format combination.