Solve for principal, final amount, interest earned, annual rate, or investment time under compound growth. Choose a compounding frequency and use the remaining known values to calculate the selected unknown.
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Review the inputs, outputs, calculation method, and formulas used by this tool.
Compound interest earns interest on both the original principal and previously credited interest.
A = P × (1 + R / n)^(nT)
I = A − P
Symbols refer to the corresponding input and result labels shown above.
Enter your figures, choose any available options, and select Calculate. You can change the inputs as often as you like to compare scenarios.
Results are estimates for education and planning. Taxes, lender rules, fees, and investment returns can vary, so verify important decisions with a qualified professional.