Video File Size Calculator

Calculate file size from duration and video/audio bitrates

Duration (seconds, 0.1–21,600)Video bitrate (kbps)Audio bitrate (kbps)Container overhead allowance (%)Upload speed (Mbps)

Estimated file size626.7 MB

Payload bitrate8.19 Mbps

Estimated upload time0:50

Formula(video + audio) × time ÷ 8

ℹ️ This is arithmetic for a known constant or average bitrate. VBR, codec behavior, metadata, and extra tracks change the actual size.

ℹ️ Video File Size Calculator

Calculate file size from duration and video/audio bitrates

Verify results with an authoritative source before using them for important medical, legal, or financial decisions.