Rule of 72 Calculator

The rule of 72 is a mental-math bridge between percent growth and how long money doubles, named for the number you divide into 72. This page shows the quick estimate next to a precise logarithmic answer for the same problem. Inflation, taxes, and compounding inside different intervals still matter on real portfolios—use it for intuition, not contracts.

[calculator id="rule-of-72-calculator"] — Shortcode reference; the live calculator mounts in the block below when the child theme enqueues the matching script.