📖 Read the full Video File Size Calculator guide — how it works, examples & FAQ →
How to use this tool
- Enter the video bitrate in Mbps.
- Set the duration.
- Read the estimated file size and platform limits.
Example
1080p, 8 Mbps, 60s → approx 60 MB
Why it's private
This tool runs entirely in your browser using JavaScript. Whatever you paste is processed on your own device — it is never uploaded to a server, logged, or stored. Built by Calabi, which also strips AI metadata and C2PA signals from images and video.