Investment
Rule of 72 Calculator
The magic number that tells you how fast your money will double.
Annual interest rate
%
Did you know?
Quick Math Hack
Divide 72 by your interest rate to see years to double.
Divide 114 for tripling.
Divide 144 for quadrupling.
Money Doubles In
6 Years
2x
3x
Triples In
9.5 Years
4x
Quadruples In
12 Years
Calculated using Rule of 72, 114, and 144