Flag Calculator | USA
Calculate proportions for the United States flag
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How it works: Enter the flag's width and height to get recommended star size, stripe width, and union size based on official US flag proportions.
Tips
- US flag ratio is 1.9:1 (width:height)
- Union (blue field) width = 0.76 × height, height = 7/13 × height
- Star diameter = 0.0616 × height, stripe width = 1/13 × height