Cosmic Math
Phi Age uses the golden ratio to mark harmonious milestones in your life.
A Phi Age treats the golden ratio φ ≈ 1.618 Earth years as one Phi year. At 16.18 Earth years you are 10 Phi years old.
Phi (φ), the golden ratio, appears throughout nature, art, and architecture. The Phi Age maps your life onto this proportion.
Each Phi year equals φ Earth years ≈ 1.618 Earth years. Because φ is smaller than π, Phi birthdays arrive more frequently than Pi birthdays.
Phi age = Earth age ÷ φAt 16.18 Earth years you have completed exactly 10 Phi years.
It is the number φ ≈ 1.61803… that satisfies φ = (1 + √5) / 2, famous for its role in proportions judged aesthetically pleasing.