Video Converter
Convert videos between MP4, WebM, MOV, AVI, MKV, GIF, MP3, and more — powered by FFmpeg in your browser
Video Converter Online — Free Format Converter
Convert videos between MP4, WebM, MOV, AVI, MKV, GIF, MP3, and more — powered by FFmpeg.wasm running entirely in your browser. No upload, no account, no file size limits from servers.
Common video format guide
MP4 (H.264)
Universal compatibility — plays on all devices, browsers, and platforms. Best choice for sharing and web playback.
WebM (VP9)
Open format for the web. Smaller file size than MP4 at the same quality. Best for web embedding.
MOV
Apple's container format. Native for iOS and macOS. Compatible with professional video editors.
MKV
Matroska container — supports multiple audio/subtitle tracks. Popular for movies and archiving.
FAQ
Is video conversion done in my browser?
Yes — FFmpeg.wasm runs the full FFmpeg library in your browser via WebAssembly. Your video files never leave your device.
How long does conversion take?
Depends on file size and your device. A 5-minute HD video typically converts in 1–3 minutes in the browser. Copy-mode conversions (container change only) are near-instant.
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