Formula
Years to double is approximately 72 divided by annual return rate. It is a quick mental shortcut, not an exact projection.
Rule of 72 Calculator
Estimate how many years it may take to double at a given annual return rate.
Estimate how many years it may take to double at a given annual return rate.
Years to double is approximately 72 divided by annual return rate. It is a quick mental shortcut, not an exact projection.