APY Calculator
Calculate annual percentage yield (APY) from a stated annual interest rate and compounding frequency.
Calculate APY
Calculate annual percentage yield (APY) from a stated annual interest rate and compounding frequency.
What This APY Calculator Calculates
APY expresses how much a deposit would grow over one year when compounding is included, assuming the rate and balance conditions remain unchanged. It is commonly used when comparing savings and deposit products.
Formula and Method
APY = (1 + r ÷ n)^n − 1.
The result uses only the values entered on this page. No account or sign-in is required, and the calculator itself runs locally in your browser.
How to Use the Calculator
- Enter the requested amount, rate, term, or cash-flow values using consistent units.
- Check whether a percentage is annual, periodic, nominal, or effective as indicated by the field label.
- Select Calculate and review the main result plus the supporting figures.
- Use Copy, Share, or Save Result Image only after you have reviewed the assumptions.
Worked Example
If a savings account states a 5% annual rate compounded monthly, the APY is slightly above 5% because each month earns interest on prior interest.
Common Uses
- Compare savings accounts with different compounding schedules.
- Understand the annualized yield on a deposit rate.
- Estimate how much compounding contributes beyond the stated rate.
How to Interpret the Result
The result is an estimate based on a simplified mathematical model. Compare it with the supporting figures rather than relying on one number alone. For borrowing or savings products, actual rates, fees, payment dates, taxes, and institutional rules can change the final amount.
Important Notes and Limitations
Actual account earnings can differ because rates may change, balances can change, and banks may apply minimum-balance rules, fees, withholding, or product-specific compounding conventions. For important financial decisions, confirm current product terms and calculations with the relevant bank, lender, employer, accountant, or financial professional.
Frequently Asked Questions
What is the difference between APY and interest rate?
The stated rate is the quoted annual rate; APY incorporates compounding over the year.
Does a higher compounding frequency increase APY?
For the same positive nominal rate, more frequent compounding normally produces a slightly higher APY.
Does this calculator include bank fees?
No. It calculates APY from the entered rate and compounding frequency only.
Common Search Questions About APY Calculator
How do I calculate apy?
Use the calculator on this page and enter the requested values. Calculate annual percentage yield (APY) from a stated annual interest rate and compounding frequency.
How can I get the apy result quickly?
Enter the required values, calculate, and review the result together with its supporting figures. On rebuilt mobile calculators, the answer is brought into the current viewport so the result is easy to find.
What values do I need to calculate apy?
Use the inputs shown in the calculator form and keep units consistent. For important decisions, use measured or verified values and review the page assumptions before relying on the result.