The Rule of 72, 114, and 144

The Rule of 72, 114, and 144

Rule of 72 => Estimating how long it takes to double your money
For example, you expect to get an 8% rate of return on your money. At that rate, how long will it take to double your money?
To calculate this, simply divide 72 by 8 to get 9 years.

Rule of 114 => Estimating how long it takes to triple your money
For example, you expect to get an 8% rate of return on your money. At that rate, how long will it take to triple your money?
To calculate this, simply divide 114 by 8 to get 14.25 years.

Rule of 144 => Estimating how long it takes to quadruple your money
For example, you expect to get an 8% rate of return on your money. At that rate, how long will it take to quadruple your money?
To calculate this, simply divide 144 by 8 to get 18 years.

ref: http://www.eenadu.net/specialpages/sp-siri.asp?qry=sp-siri2