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ConvertAnyVideo

MKV to FLV Converter

Convert MKV videos to FLV in seconds. Change resolution, quality and frame rate if you like — all in your browser.

or drop files here

Up to 1 GB per file · Files never leave your device

  • 100% free
  • No sign-up
  • No upload — private
  • No watermark

How to convert MKV to FLV

  1. Add your MKV files

    Click “Choose Files” or drag and drop your MKV files onto this page.

  2. FLV is selected

    The output is already set to FLV. Open Advanced settings if you want to change the quality, resolution or length.

  3. Convert and download

    Click Convert. Your FLV file is ready in moments — nothing is uploaded.

About the formats

MKV

Matroska Video

MKV (Matroska) is a flexible open container that can hold several audio tracks, subtitles and chapters in one file. It is popular for movies and series.

FLV

Flash Video

FLV was the format of Flash video players. It is still used by some streaming tools and old web videos.

Frequently asked questions

How do I convert MKV to FLV?

Click “Choose Files” and select your MKV file (or drag it onto the page). FLV is already selected as the output, so just click Convert and download your FLV file when it’s ready.

Will I lose quality converting MKV to FLV?

When the video inside your MKV file is compatible with FLV, it is copied without re-encoding, so there is no quality loss at all. Otherwise it is re-encoded at high quality. You can pick the quality yourself in Advanced settings.

Is it safe to convert MKV files here?

Your files stay on your device. Conversion runs inside your own web browser, so your files are never uploaded to our servers or anyone else’s. Nobody can see them, and nothing is stored after you close the tab.

Is the MKV to FLV converter free?

Yes, it’s completely free. There’s no sign-up, no watermark and no limit on how many files you convert. Each file can be up to 1 GB.

Can I convert several MKV files at once?

Yes. Add as many MKV files as you like and convert them in one go, then download them one by one or together as a ZIP file.

Convert MKV to other formats

Convert other formats to FLV