If you've dabbled in investing, you've likely heard of the "Rule of 72." It's a back-of-the-envelope metric for calculating how quickly an investment will double in value. Most financial metrics are ...

The rule of 72 is a shortcut investors can use to determine how long it will take their investment to double based on a fixed annual rate of return. To use the rule of 72, divide 72 by the fixed rate ...

The rule of $1,000 may help you figure out how much dough you need to save for retirement. You can guess, of course. Or go with a big number like $1 million, or even the $1.6 million that 401(k) plan ...

The rule of 70 is a calculation that estimates the number of years it takes for investments to double in amount at a specific, constant rate of return. It is frequently used when comparing investments ...

The amount you pay into your pension while you’re working can make a big difference to the eventual size of your nest egg and how comfortable your retirement is. But how much should you be saving?