Free Online Converter
Convert FLV to MKV
Free online Flash Video to Matroska converter. Fast, secure processing directly in your browser.
How to Convert FLV to MKV
- Click or drag your FLV file into the upload area above
- Wait for the file to be loaded (happens instantly in your browser)
- Click the "Convert File" button
- Your processed MKV file will automatically download
Why Convert FLV to MKV?
Key Features
100% FreeNo subscription, no hidden fees, no limits
Privacy FirstFiles never leave your device
Fast ProcessingInstant browser-based conversion
No InstallationWorks directly in your browser
High QualityMaintains quality during conversion
SecureClient-side processing only
About FLV and MKV Formats
FLV (Flash Video)
FLV (Flash Video) was the standard format for web video. While Flash is deprecated, FLV files are still common and can be converted to modern formats.
MKV (Matroska)
MKV (Matroska) is a flexible container format that can hold unlimited video, audio, and subtitle tracks. Popular for high-quality video content.