Video ToolsFree

Video Format Converter

Convert between all major video formats — MP4, MOV, AVI, MKV, WebM, FLV, WMV, VOB, and more — directly in your browser using FFmpeg WebAssembly. No server upload. Supports re-encoding with custom quality settings. No signup required.

Drop your video anywhere, click to browse

MP4, MOV, AVI, MKV, WebM, FLV, WMV, VOB

Ctrl+Vto paste a copied file

Frequently Asked Questions

Which video formats are supported?▼
MP4, MOV, AVI, MKV, WebM, FLV, WMV, VOB, MTS, M4V, 3GP, and dozens more via FFmpeg WebAssembly. Most standard video formats work.
Is there a file size limit?▼
No hard limit — conversion speed and maximum size are bounded by your browser's available memory. Videos under 500 MB convert reliably on most devices. Larger files may require 8+ GB of RAM.
Is the conversion done in the browser?▼
Yes. FFmpeg runs as WebAssembly in your browser. No video is uploaded to any server at any point.
How long does conversion take?▼
Conversion speed depends on video length, resolution, and your device CPU. A 10-minute 1080p video typically converts in 2–5 minutes in browser.
Can I adjust quality settings?▼
Yes. Codec, bitrate, and quality (CRF value) can be customized for advanced control over output file size and quality.