Rule of 72 Calculator
Calculate how long it takes to double your investment using the Rule of 72. Also includes Rule of 114 and Rule of 144.
Important Financial Disclaimer
This calculator provides estimates based on standard financial formulas from verified references. Results are for informational and educational purposes only and should not be considered as professional financial, investment, or tax advice.
For important financial decisions such as loans, investments, mortgages, retirement planning, or tax matters, please consult with qualified financial advisors, certified financial planners, or licensed tax professionals who can review your specific situation.
Calculations may not account for all variables specific to your circumstances, local regulations, or current market conditions. Always verify results and consult professionals before making financial commitments.
Not a substitute for professional financial advice
Investment Details
Years to Double (Rule of 72)
9.0 years
Exact: 9.01 years
Exact: 14.27
Exact: 18.01
Rate Needed to Double in 10 Years
The Rule of 72
Years to 2x
Years to 3x
Years to 4x
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sources
- β’Reserve Bank of India (RBI) β Financial regulations, lending rates, and monetary policy guidelines. rbi.org.in
- β’Consumer Financial Protection Bureau (CFPB) β Consumer finance guidelines, mortgage and loan disclosure standards. consumerfinance.gov
- β’Securities and Exchange Board of India (SEBI) β Investment and securities market regulations. sebi.gov.in
- β’Investopedia β Financial formulas, definitions, and educational content. investopedia.com
For a complete list of all references used across the site, visit our full sources page.
Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
Formula Source: Fundamentals of Financial Management
by Brigham & Houston