Design & Multimedia
Video File Size Calculator
Estimate video file size
Created and maintained by: CalcTago Editorial TeamLast updated: 2026-02-13
Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.
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Frequently asked questions
What does the Video File Size Calculator do?
It helps you estimate video file size.
What inputs do I need?
Enter Duration, Video bitrate, and Audio bitrate.
Are decimals supported?
Yes, you can use decimal values where appropriate.
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About this tool
This Video File Size Calculator turns your inputs into practical results. Provide Video bitrate, Audio bitrate, and Duration to calculate Estimated size.
Adjust values to compare scenarios and see how sensitive the result is. The calculation uses the numbers as entered, so double-check units and expect small differences from rounding in the displayed totals.