72
Rule of 72 Calculator
How long to double your money? Or what rate do you need?
Rule of 72 calculator
How long to double your money? Or what rate do you need?
Rule of 72: Years to double = 72 / annual rate (%). Approximate; works best for rates 4-15%. For informational purposes only.
How it works
Rule of 72: divide 72 by your annual return (%). The result is approximately how many years to double your money. At 7%, it takes about 10 years. Or: divide 72 by years to get the required rate. Works best for rates between 4% and 15%.