Rule of 72 Calculator
Quickly estimate how long it takes to double your money. The Rule of 72 gives a simple approximation based on your interest rate.
Inputs
%
Results
Years to Double (Rule of 72)
9 years
Exact Years to Double9.01 years
Doubled Amount$20,000
Years to Triple14.27 years
Years to Quadruple18.01 years
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