Square Root of 5 Rectangle

1000 x 2236 px sRGB 2.24:1 portrait

A 1000 by 2236 px square-root-of-5 rectangle. The most elongated of the standard metallic rectangles, often used for specialty compositional studies and mathematical art.

about the size of a desktop monitor

About this size

The √5 rectangle is the longest member of the metallic-rectangle family. It is closely related to the golden rectangle: a √5 rectangle can be subdivided into a golden rectangle plus a smaller rectangle with the same √5 proportion, which makes it a recursive structure favoured in mathematical art and compositional study.

For practical design, the elongation is extreme enough that the format reads as deliberately mathematical rather than incidentally so. Use it when the geometry is part of the message.

Mathematical composition
Tall layouts
Proportion studies

Pro tips

1 A specialty proportion for compositional studies and mathematical art. The elongation reads as deliberate.
2 Can be subdivided into a golden rectangle plus a smaller √5 rectangle. The recursive structure is part of the appeal.
3 Rarely used for general layout work. The aspect is more extreme than most practical design formats need.