Design & Multimedia
Video File Size Calculator
Estimate video file size
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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.
Related tools
About this tool
Inputs
- Duration
- Video bitrate
- Audio bitrate
Results
- Estimated size
Whether you are planning ahead or double-checking existing numbers, the Video File Size Calculator delivers instant answers from the figures you provide. Provide duration, video bitrate and audio bitrate to get started. The tool derives estimated size from your entries. Font size in pixels = font size in pt × DPI / 72. Accessibility standards (WCAG) set minimum contrast ratios to ensure text is readable for people with visual impairments.
WCAG AA requires a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. People frequently need to estimate video file size but lack a quick way to do it — this tool fills that gap. Color models serve different purposes: RGB for screens, CMYK for print, HSL for intuitive editing. Results are rounded for display; the underlying computation retains full precision. Design for the smallest screen first, then scale up — constraints breed clarity.