See how we rate investing products to write unbiased product reviews. The Rule of 72 is a mathematical formula that estimates how long it will take an investment to double in value or to lose half ...

Have you heard of the Rule of 72? Maybe if you go back to your college finance class? And even if you did remember it, you ...

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 ...

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 ...

The Rule of 72 also has limitations. Like the Rule of 70, it assumes a constant rate of return. Additionally, it is most accurate for interest rates between 6% and 10%. Outside this range, the ...