Watch your money grow exponentially. Adjust the inputs and see how time, contributions, and rate work together.
| Year | Contributions | Interest Earned | Total Balance |
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Compound interest means you earn returns not just on your original money, but also on the interest that's already accumulated. This creates a snowball effect — the longer your money compounds, the faster it grows. A 7% annual return doubles your money roughly every 10 years (the Rule of 72). This calculator compounds monthly, which is standard for most investment and savings accounts.