I recently created a little tool to calculate Golden Rectangles… the GoldenRectanglizer.
It was made for the Golden Rectangle photo group on Flickr, which explores the Golden Ratio in photographic composition. The idea is that you keep it open when cropping photos in your photo software and calculate the Golden Rectangle that best fits your picture.
What’s a Golden Rectangle?
A Golden Rectangle is one whose height and width are related by the Golden Ratio, an extremely common natural ratio – found in the geometry of human faces and bodies, seashells, trees and even the distribution of financial stock market highs and lows.
If you were to cut a square from the Golden Rectangle, the remaining small rectangle would have exactly the same height-to-width ratio as the original rectangle.
One side is approximately 1.618 (“Phi”) times the size of the other. But the exact ratio can never actually be known because Phi is an irrational number, just like Pi (3.14159…). The number of decimal places goes on infinitely.