Watch your money grow—or calculate how much money you will owe in total—with the MoneySense compound interest calculator. Here’s how it works.

To understand how to use a compound interest calculator, it’s helpful to know the formula behind it. The compound interest formula is: A = P × (1 + r/n)^ (nt) Where: A = the future value of the ...

When using our compound interest calculator, you'll want to use the key components we talked about earlier: principal amount, interest rate, compounding frequency, time period, and, optionally ...

One of the easiest ways to calculate how compound interest will grow your funds is to estimate it using the Rule of 72. Divide 72 by the annual interest rate, or APY, offered.