Using the calculator
Enter Nominal annual rate, Compounds per year, Example balance. Convert a nominal annual interest rate into effective APY for different compounding frequencies and estimate one year interest.
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APY Calculator
Convert a nominal annual interest rate into effective APY for different compounding frequencies and estimate one year interest.
Enter your financial details
Use current balances, rates, payments, income, costs, or tax figures that match the scenario. The apy tool uses those values to produce an estimate you can compare and plan around.
%
$
Effective APY—
Approximate one year interest—
Approximate year end balance—
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How to use this calculator
Reading the result
The result shows how the starting balance changes under the rate, time period, and compounding assumptions entered.
Results are estimates based on the values entered. Review the Methodology and Calculator Disclaimer for important limitations.