LocalConvert
Video Converter

Convert video to MP4 — free & private

Convert WEBM, MKV, AVI, MOV, FLV and more to MP4. GPU-accelerated when available. Your video never leaves your device.

No server uploads100% privateGPU acceleratedOpen source

How to convert to MP4

  1. 1

    Choose your file

    Click or drag any WEBM, MKV, AVI file onto the uploader above.

  2. 2

    Pick MP4 format

    Select MP4 from the format dropdown in the converter.

  3. 3

    Save

    Hit the convert button, then save your MP4 file to your device instantly.

Supported input formats

.WEBM.MKV.AVI.MOV.FLV.WMV

FAQ

Is the MP4 converter really free?

Yes, completely free. No hidden fees, no watermarks, no file size limits. LocalConvert is open source and free forever.

Are my files safe?

Absolutely. Your files never leave your browser. All conversion happens using WebAssembly running locally on your device — no uploads, ever.

What files can I convert to MP4?

You can convert WEBM, MKV, AVI, MOV, FLV, WMV files to MP4.