Free Financial Calculator
Annual Percentage Yield Calculator
Convert a nominal annual rate into APY and compare compounding frequencies.
Your entries are processed in this browser and are not stored by the calculator.
Enter Your Details
Your results will appear here
Complete the fields and select Calculate to view the estimate.
How This Calculator Works
APY uses (1 + r ÷ n)n − 1, where r is the nominal annual rate and n is the number of compounding periods per year. It reflects compounding but not account fees or changing rates.
Frequently Asked Questions
Why is APY usually higher than the nominal rate?
APY includes the effect of interest earned on prior interest.
Does APY include fees?
Not necessarily. Review the institution’s disclosure for fees and conditions.
Can rates change?
Variable account rates can change, so actual earnings may differ.