How to use it
- Enter the starting investment and annual interest rate.
- Choose the investment period and compounding frequency.
- Add an optional monthly contribution, then calculate.
Compound Interest Calculator
Calculate compound interest with optional monthly contributions.
About the Compound Interest Calculator
Compound interest grows an investment by earning returns on both the original balance and previously earned interest. This calculator also includes regular monthly contributions.
How the calculation works
The core relationship is A = P(1 + r/n)^(nt). Duviho adds each monthly contribution to the balance and applies growth according to the selected compounding frequency.
When to use it
Use this estimate when comparing long-term saving or investing scenarios. Try different rates and contributions, but remember that real returns, fees and taxes can change the outcome.
Example
Compare a $10,000 starting balance at 6% for 10 years with and without a $200 monthly contribution to see how deposits and compound growth affect the final balance.