Compound Interest Calculator
See how savings grow with compounding and regular contributions, year by year.
Inputs
Optional
Result
Enter your values to see the result.
How it works
Compound interest earns interest on previous interest. Choose how often it compounds and add regular contributions to see year-by-year growth, how much you paid in and how much came from interest.
- A = P × (1 + r ÷ n)^(n·t)
- + contributions added each period
- r = annual rate, n = periods per year
Assumptions
- The rate stays constant for the whole period.
- Regular contributions are spread evenly over the compounding periods and added at the end of each period.
- Taxes and fees are not deducted.
Every calculation runs in your browser. Nothing you enter is uploaded.