Compound Interest Calculator
Estimate balance with periodic compounding.
Calculations run in this browser. Values are not submitted to the server.
Result
Formula and assumptions
A = P(1 + r/n)^(nt). Assumes a constant nominal annual rate and no deposits, withdrawals, fees, or tax.
Example values are shown in the input placeholders. Results use browser number precision unless the tool uses exact integer arithmetic. Check units and assumptions before using a result.