Estimate final value, contributions, and interest with interest-on-interest growth over time.
Calculate with the Compound Interest Calculator
Enter the details below. Required values are validated before results are shown.
Compound Interest Calculator results
Compound Interest Calculator projection
The year-by-year values are also provided in the accessible table.
How to use the Compound Interest Calculator
- Choose the display currency and any calculation mode or frequency.
- Enter each required value using a consistent currency and time basis.
- Select Calculate or press Enter.
- Review the result explanation, assumptions, and any schedule before relying on the estimate.
Worked example
10,000 at 10% compounded annually for two years grows to 12,100 without contributions.
Understanding the results
The summary separates the most important output from supporting values. Currency selection changes formatting only; it does not convert exchange rates or alter a currency-independent formula.
Frequently asked questions
How does compounding frequency affect growth?
Contribution growth is simulated monthly; the selected compounding frequency applies to principal-only calculations when there is no contribution. The result depends on the values and assumptions entered, so compare it with the applicable provider or official rule.
Can I use decimal values in the Compound Interest Calculator?
Yes. Decimal values are supported. Results are calculated at full JavaScript numeric precision and formatted for readability.
Are the Compound Interest Calculator results guaranteed?
No. The calculator provides an estimate based on the entered assumptions and is not financial, tax, investment, lending, payroll, or legal advice.