Rule Of 72 Calculator
Rule Of 72: a planned Super Calculator tool. Covers annual rate (%) and or target doubling years. Stub page while the tool and its worked example are prepared.
Rule Of 72 Calculator is a planned calculator in the finance section of Super Calculator, covering time value of money.
What this calculator will compute
Inputs: annual rate (%) and or target doubling years.
Outputs: approximate years to double, exact years to double and implied rate (%).
Formula, recorded as scope and not yet verified against a primary source: Doubling time approximated as 72 / r where r is the percentage rate. The page must show the exact answer ln(2)/ln(1+r) alongside it and state the band where the approximation is accurate, roughly 6% to 10%, and where 69.3 or 70 is the better numerator.
Status
This page is a stub. The calculator is not built, no figure on this page has been verified against the authority that sets it, and nothing here should be used to make a decision. The page exists so that the site structure is complete and so that articles can link this concept on first mention.
The stub carries noindex, nofollow and is excluded from the sitemap.