Correct Aspect Ratio of the Canton and the Navy Jacks of the United States

The First Navy Jack and the Navy Union Jack share the aspect ratio of the U.S. flag’s canton, scaled to full dimensions—measured at 1:1.4085 (height to width), or equivalently 71:100. This ensures symbolic and proportional continuity with the parent flag structure, while allowing the canton to function as an independent flag field.

The Navy Jack in the correct 71:100 ratio.

The correct aspect ratio of the First Navy Jack or the Navy Union Jack is
1:1.4085, or simplified as 71:100 (Height : Width).

First Union Jack displayed in 1:1.9 ratio, incorrectly adapted from the Flag of the United States total aspect ratio, rather than using the canton’s specific ratio.

Reasonably Accurate Commercial Canton Sizes

12″x18″ (exact: 12″x16.9″)

2’x3′ (exact: 2’x2.82′)

3’x4′ (exact: 3’x4.23′)

4’x5′ (exact: 4’x5.63′)

5’x7′ (exact: 5’x7′)

6’x8′ (exact: 6’x8.45′)