Video File Size Calculator
Calculate video file size from resolution, frame rate, bit rate, and duration. Enter values for instant results with step-by-step formulas.
Reviewed by Daniel Agrici, Founder & Lead Developer
Reviewed by Daniel Agrici, Founder & Lead Developer
Formula
File Size (MB) = (Video Mbps + Audio Mbps) × Duration(s) / 8
Bitrate determines quality and file size. 1080p YouTube: 8 Mbps. 4K: 35-45 Mbps. Streaming: 3-6 Mbps. Lossless: 100+ Mbps.
Worked Examples
Example 1: 10 min 1080p
Problem:10 minutes at 8 Mbps + 256 kbps audio
Solution:(8.256 × 600) / 8 = 619 MB
Result:619 MB
Reviewed by Daniel Agrici, Founder & Lead Developer · Editorial policy