About the Exponential Growth Calculator

Compounding growth follows A = P(1 + r)ᵗ. At 5% over 10 periods, $1,000 becomes $1,000 × 1.05¹⁰ ≈ $1,628.89 — a 62.9% gain, well above the 50% that simple interest would give, because each period's interest earns interest itself.

The Power of Doubling Time

Growth rate maps directly to a doubling time: ln(2) ÷ ln(1 + r). A 1% advantage in annual growth shortens the doubling time meaningfully — and because growth is exponential, that advantage compounds into a many-times-larger final gap over a career or a century.