video / converter

MKV to MP4 Converter

Convert MKV files to MP4 format using a practical and suitable conversion workflow.

Input: MKV Output: MP4 Local-first processing

MKV to MP4 Converter

Choose one or more MKV files. Each file is converted to MP4 locally in your browser with the FFmpeg WebAssembly engine. Nothing is uploaded to a server.

Choose files to begin.

How this page works

Use this page to convert MKV into MP4. The page describes the accepted input, the expected output, and any quality or compatibility issues that matter for this conversion.

Some conversions are mainly for compatibility, while others may change quality, layout, transparency, timing, metadata, or editability.