Convert FLV to MKV Online Free
Fast and effortless Flash Video to Matroska Video conversion in the cloud. No software installation required.
How to Convert FLV to MKV in 3 Easy Steps
Upload FLV File
Select or drag & drop your FLV file from your computer or phone.
Choose MKV Format
Confirm MKV is selected as your target output format.
Download Converted File
Click Convert and your processed MKV file will be ready for instant download.
FLV vs MKV Format Comparison
FLV (Flash Video)
Web streaming video container originally developed by Macromedia / Adobe Flash.
- • Category: Video
- • Extension: .flv
MKV (Matroska Video)
Flexible open-source media container capable of holding unlimited audio, video, and subtitle streams.
- • Category: Video
- • Extension: .mkv
Frequently Asked Questions
How can I convert FLV to MKV online for free?
Upload your FLV file above, click Convert, and download your converted MKV file directly. No payment or account required.
Is it safe to convert files on SnapConvert?
Yes. All file transfers are secured with 256-bit SSL encryption. Uploaded files are automatically deleted within 1 hour.
Can I convert on mobile (iPhone & Android)?
Yes. SnapConvert works seamlessly in Safari, Chrome, and any modern mobile or desktop browser without installing apps.