Golden Ratio Calculator
Find golden-ratio segments from a length.
Apply the golden ratio φ ≈ 1.618, found in art, design and nature.
The math behind it
φ = (1 + √5) ÷ 2. Multiply by φ to extend, divide by φ to shrink, keeping the golden proportion.
Worked example
100 × φ = 161.8.
FAQ
Why is it special?
A line split so the whole-to-long ratio equals the long-to-short ratio gives φ.