Rule of 72, 114, & 144 Visualizer
See exactly how fast your investments double (Rule of 72), triple (Rule of 114), or quadruple (Rule of 144) in nominal value versus inflation-adjusted purchasing power.
Rule of 72
Doubles your money
Rule of 114
Triples your money
Rule of 144
Quadruples your money
Milestone Purchasing Power Comparison
Frequently Asked Questions
What is the Rule of 72, 114, and 144?
These rules are simple mathematical approximations used to calculate the speed of compounding interest without complex logarithmic formulas:
• Rule of 72: Years to double your money = 72 / rate of return.
• Rule of 114: Years to triple your money = 114 / rate of return.
• Rule of 144: Years to quadruple your money = 144 / rate of return.
For example, at a 12% p.a. return rate, your money will double in 6 years (72/12), triple in 9.5 years (114/12), and quadruple in 12 years (144/12).
Why is it important to calculate compounding rules in real (inflation-adjusted) terms?
Nominal returns don't tell the full story because inflation eats away at your purchasing power. If your money doubles in 6 years, but prices of goods also increase by 40% in that same period, your real wealth expansion is much smaller. By subtracting inflation from your returns (getting the Real Return Rate), you find out when your capital doubles in terms of actual purchasing capability.
Related Articles
The Rule of 72 and Other Compounding Shortcuts Every Investor Should Know
The Rule of 72 is one of finance's most useful mental shortcuts. Divide 72 by your annual return rate and you get the approximate number of years to double your money. At 12% return: 72/12 = 6 years to double. At 6%: 12 years. At 3% (savings account): 24 years.
This simple rule reveals why instrument selection matters so much. Money in a 3% savings account doubles every 24 years — meaning ₹10 lakhs becomes ₹20 lakhs in 24 years. Money in an equity fund at 12% doubles every 6 years — meaning ₹10 lakhs becomes ₹20 lakhs in 6 years, ₹40 lakhs in 12, ₹80 lakhs in 18, ₹1.6 crore in 24 years. Same time. Same money. Nine times more wealth.
The Rule of 114 tells you how long to triple your money (114/rate). The Rule of 144 for quadrupling. These are approximations but remarkably accurate for rates between 6–20%.
There's also the Rule of 70 (often used by economists for inflation): at 7% inflation, prices double in 10 years. This is why a ₹50,000 monthly expense today becomes ₹1 lakh/month in 10 years — a critical input for retirement planning that most people dramatically underestimate.
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