Formula for Double Time?
Doubling Time Formula Doubling Time = Log(2) / Log(1 + Increase), Where: Increase Is the Constant Growth Rate Expressed as a Percentage Value, Doubling Time Is...
How do you calculate double time?
The rule says that to find the number of years required to double your money at a given interest rate, you just divide the interest rate into 72. For example, if you want to know how long it will take to double your money at eight percent interest, divide 8 into 72 and get 9 years.
How do you calculate doubling time for an interest rate?
The rule is a shortcut, or back-of-the-envelope, calculation to determine the amount of time for an investment to double in value. The simple calculation is dividing 72 by the annual interest rate.
James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.
