Convert FLV to MKV Free — Online & Instant

Convert FLV to MKV — Free Online

Fast, secure, no software needed.

📁 Drag & drop your file here

or click to browse • Max 100MB

✅ Free • ⚡ Instant • 🔒 Secure • 💻 No install

How to Convert FLV to MKV

Converting .flv files to .mkv is fast and simple with OpenAnyFile. FLV is a video format: FLV is Adobe Flash Video format. MKV is a video format: MKV (Matroska) is an open video container supporting multiple tracks.

Upload your .flv file to OpenAnyFile
Select MKV (.mkv) as the target format
Click "Convert" and wait for processing
Download your converted .mkv file

Why Convert FLV to MKV?

There are several reasons to convert from .flv to .mkv:

Compatibility: .mkv may be more widely supported by software and devices
File size: Converting between formats can reduce file size for easier sharing
Editing: MKV may offer better editing capabilities for your workflow
Sharing: Recipients may prefer .mkv files for their daily use

About FLV Format

FLV is Adobe Flash Video format. Category: Video. Extension: .flv. Created by: Adobe.

About MKV Format

MKV (Matroska) is an open video container supporting multiple tracks. Category: Video. Extension: .mkv. Created by: Matroska.

Frequently Asked Questions

How do I convert .flv to .mkv?

Upload your .flv file to OpenAnyFile, select MKV as the target, and download the converted file.

Is FLV to MKV conversion free?

OpenAnyFile offers free file analysis. Conversion may require a one-time payment depending on the file.

Will I lose quality converting .flv to .mkv?

OpenAnyFile preserves maximum quality during conversion. Some format-specific features may not transfer between different file types.

Can I convert .mkv back to .flv?

Yes, you can convert .mkv to .flv using OpenAnyFile as well.