Compound interest calculator with growth chart
Enter your starting amount, monthly deposit, interest rate and years to see how compound interest grows your savings, with a chart and a yearly table.
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About
Compound interest earns interest on both your principal and the interest already added, so money grows faster over time. This calculator compounds monthly, adds your deposit at the end of each month and draws a chart so you can see how much is earned versus put in.
Frequently asked questions
Is the rate yearly or monthly?
It is a yearly rate (% per year). The tool divides it by 12 and compounds every month.
Is the result as exact as a bank statement?
It is an estimate from the monthly compound formula, without tax, fees or rates that change over time. Use it to compare scenarios, not as a bank commitment.