Saving for College This calculator can help you estimate how much you should be saving for college. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Share | Related Content The Rule of 72 Do you know how long it may take for your investments to double in value? The Rule of 72 is a quick way to figure it out. A Decision Not Made Is Still a Decision Investors who put off important investment decisions may face potential consequence to their future financial security. 5 Smart Investing Principles Principles that can help create a portfolio designed to pursue investment goals.