The flag of Denmark, known as the Dannebrog, has an aspect ratio of 28:37. It features a red background (Pantone 186C) with a white Scandinavian cross that extends to the edges of the flag. The vertical bar of the cross is shifted towards the hoist side, dividing the flag into four rectangles.

The width of the cross arms is 1/14 of the flag's height, while the length of the vertical arm is 3/7 of the flag's length, and the horizontal arm is 6/7 of the flag's length. The distance from the hoist to the vertical arm is 2/7 of the flag's length.