Design DrifterCompound Interest Calculator
Estimate growth from compound interest and regular contributions.
EverydayEnter valid non-negative amounts, a rate above -100%, and a whole number of years.
Monthly contributions are added at the end of each month. Results are estimates and do not include taxes, fees, or inflation.
Final Balance
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Total Contributions
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Interest Earned
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Yearly Breakdown
| Year | Balance | Contributed | Interest Earned |
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About
Estimate how an initial amount and regular monthly contributions may grow when interest is compounded at a chosen frequency. This is an educational estimate, not financial advice.
Use this compound interest calculator to estimate how a starting balance and regular monthly contributions may grow over time. Choose an annual interest rate, number of years, and compounding frequency to compare contributions with estimated interest.
What you can do
- Includes starting principal and monthly contributions.
- Supports annual, semi-annual, quarterly, monthly, and daily compounding.
- Shows final balance, contributions, interest earned, and yearly details.
Common uses
- Estimate a long-term savings plan.
- Compare how compounding frequency changes an estimate.
- Separate your own contributions from projected interest.
Frequently asked questions
Are the results financial advice?
No. The result is an educational estimate and does not account for taxes, fees, inflation, changing rates, or investment risk.
When are monthly contributions added?
This calculator adds each monthly contribution at the end of the month, after that month’s interest calculation.