Golden ratio calculator for phi (φ = 1.6180339887...). Calculate the longer part, shorter part, or total length in the golden section using the formulas φ = (a+b)/a = a/b.
Use this golden ratio calculator to split a length into the golden section or to find the missing long part, short part, or total length when the proportion follows phi (φ). It is useful for geometry, design, art, photography, layout work, and proportion checks.
The golden ratio is defined by φ = (a + b) / a = a / b, where a is the longer part, b is the shorter part, and a + b is the total length. This calculator lets you enter any one of those lengths and solve the other two in the same proportion.
