Square & Unusual Aspect Ratio Flags
Examine flags with distinctive statutory aspect ratios, from Switzerland's 1:1 square and Belgium's 13:15 near-square to Monaco's 4:5, Denmark's 28:37, and the United States' 10:19.
Vexillological background
While roughly four-fifths of national flags use either a 2:3 or 1:2 aspect ratio, a select group of countries codifies bespoke height-to-width proportions rooted in medieval heraldry, Nordic cross unit grids, or naval signal regulations.
Rendering these flags at their true statutory proportions rather than forcing them into a uniform 2:3 box is one of the fastest ways to understand their authentic visual geometry.
Flags in this collection (18)
Bangladesh
Palau
Monaco
Poland
Luxembourg
Denmark
Norway
Sweden
Switzerland
United States
Germany
Belgium
Iceland
Finland
Japan (1870–1999)
Bulgaria
Argentina
Brazil
Comparison table
| Entity | Category | Ratio | Layout | Primary colors | Adopted |
|---|---|---|---|---|---|
| Bangladesh | countries | 3:5 | centered centered emblem | green, red | 1972-01-17 |
| Palau | countries | 5:8 | centered centered emblem | light blue, yellow | 1981-01-01 |
| Monaco | countries | 4:5 | horizontal bicolor | red, white | 1881-04-04 |
| Poland | countries | 5:8 | horizontal bicolor | white, red | 1919-08-01 |
| Luxembourg | countries | 3:5 | horizontal tricolor | red, white, light blue | 1972-06-23 |
| Denmark | countries | 28:37 | horizontal nordic cross | red, white | 1748-06-11 |
| Norway | countries | 8:11 | horizontal nordic cross | red, white, blue | 1821-07-13 |
| Sweden | countries | 5:8 | horizontal nordic cross | blue, yellow | 1906-06-22 |
| Switzerland | countries | 1:1 | centered centered emblem | red, white | 1889-12-12 |
| United States | countries | 10:19 | canton canton | red, white, blue | 1960-07-04 |
| Germany | countries | 3:5 | horizontal tricolor | black, red, yellow | 1949-05-23 |
| Belgium | countries | 13:15 | vertical tricolor | black, yellow, red | 1831-01-23 |
| Iceland | countries | 18:25 | horizontal nordic cross | blue, white, red | 1944-06-17 |
| Finland | countries | 11:18 | horizontal nordic cross | white, blue | 1918-05-29 |
| Japan (1870–1999) | historical | 7:10 | centered centered emblem | white, red | 1870-02-27 |
| Bulgaria | countries | 3:5 | horizontal tricolor | white, green, red | 1991-07-12 |
| Argentina | countries | 5:8 | horizontal triband | light blue, white, yellow | 1812-02-27 |
| Brazil | countries | 7:10 | centered centered emblem | green, yellow, blue, white | 1889-11-19 |